View this months copy of FTM magazine
Application Spotlight on
Lighting
Developing for a smart
lighting controller?
Turn to page 10 now to see the
Circuit Centre feature!
Component Focus: pages 2-8
New SiC dual diodes from STMicroelectronics
offer very low switching losses
Design Note: page 9
How ON Semiconductor’s LV8907 controller
eases the design of brushless DC motors
Circuit Centre: pages 10-19
The latest and best components for smart light
control
Application Spotlight: pages 20-29
BitCloud software development kit from Atmel
helps designers of new ZigBee™ Light Link projects
Technical View: pages 30-31
SIGFOX and LoRa™ RF technologies for low-cost
and low-power wireless wide-area networks
NEWS
IN
BRIEF
FTM
TECHNOLOGY
LUMILEDS
Lumileds has announced the introduction
of the LUXEON 2835, a new series of
mid-power LEDs offering high efficacy
and reliability in a compact package with
an industry-standard footprint.
The buzz at Light + Building suggests
quality of light and control technologies
are the big issues for 2016 and beyond
Precision op amps for industrial
and automotive equipment
STMicroelectronics’ TSX7 series of highprecision, low-power op amps helps
designers to save energy, improve accuracy
and simplify the design of sensors for
applications from automotive electronics to
smart buildings and industrial controls.
The TSX7 series offers low power
consumption and has an offset voltage of
less than 200µV. It features rail-to-rail inputs
and outputs, and has an extended powersupply range of 2.7V to 16V.
2kW hot-swap AC-DC power
supply provides high DC output
voltage
CUI Inc., has introduced the PFR-2100, a
series of 2kW front-end AC-DC power
supplies. A blind-mate rectifier with a
programmable output-voltage range of 100V
to 410V DC, it includes a hot swap blinddocking capability implemented through the
use of a single connector which integrates
AC, DC and I/O signals.
The programmable DC output delivers a
constant current up to 5.125A with droop
current sharing for paralleling as many as 12
units. Additional features include power
factor correction, remote on/off control, a
power good signal and front panel LED
indicators.
©Copyright 2016 Future Electronics Ltd. All trademarks contained herein are the
property of their respective owners. Applications for product samples, badge
boards, demonstration boards, Future Electronics’ boards and other advertised
materials from Future Electronics are offered subject to qualification. Images of
product packages throughout this publication are for illustration purposes and not
necessarily an exact representation of the advertised part.
160401:
2
For more information e-mail
[email protected]
PRODUCT
Compact LED with standard footprint offers high
luminous output and good efficacy
New modules enable efficient
48V direct-to-PoL circuits
Vicor Corporation has introduced a new
generation of 48V Direct-to-PoL (Point-ofLoad) power components. These modules,
which enable contemporary low-voltage,
high-current CPUs, graphics processors,
ASICs and DDR memory ICs to be powered
from a 48V distribution bus, enable
unprecedented power density and
conversion efficiency and reduce distribution
losses in the power system.
Vicor’s latest 48V modules draw on
advances in power-conversion engines,
control systems and modular power
technology. They include the Cool-Power
PI3751-02 buck-boost pre-regulator module
and the VTM48KP020x current multiplier
module.
STAR
WATCH
Like many thousands of visitors to the
huge Light + Building fair (Frankfurt,
13-18 March), I enjoyed an exciting
and eye-opening – if tiring – few days
at the world’s most important
exhibition for the lighting industry.
After reflecting on many discussions at Light +
Building with both customers and suppliers,
and after viewing the huge range of exhibits at
the show, it is clear to me that the attention of
lighting equipment manufacturers is focussed
on a couple of topics at the moment.
The first is quality of light, which has clearly
become as important as efficacy especially in
the indoor market space. In addition, new
performance standards have emerged such as
the IEC 62722 for luminaires, and the IEC
62717 for modules, challenging the whole
industry to report the chromaticity accuracy
and maintenance over time for their products.
Future Lighting Solutions is being asked to
play a pivotal role in OEMs’ efforts to
understand and comply with the new
standards. That is because, while the
standards apply to the end-product – the
luminaire or the module – the biggest factor
affecting the characteristics of the endproduct’s light output is the LED it contains.
At Light + Building, it was clear that no-one
yet knows all the answers, but OEMs which
work with Future Lighting Solutions benefit in
four important ways:
• because of our close relationship with
leading-edge LED manufacturers such as
Lumileds or Nichia, we have access to the
most detailed and up-to-date information
about their technologies and products
• Future Lighting Solutions constantly feeds
customers’ requests and requirements back
to those LED manufacturers to inform their
product development plans
• we provide tools which help an OEM to
predict the long-term behaviour of the LEDs
we supply in the particular operating
conditions of the OEM’s luminaire
• our unique stocking capability, which draws
on Future Electronics’ global product
inventory, allows Future Lighting Solutions to
provide excellent availability of preciselybinned LEDs.
The second big trend in evidence at Light +
Building was the move towards ever more
sophisticated lighting controls and networking
technologies. The aim of detection and
dimming technology is to deliver the right
amount of light where and when it is needed.
Automation is supposed to make this happen
seamlessly - albeit not always in a way that meets
the expectation of the end-user. Eventually, this
should enable a building’s operators to
understand the extent to which control
technology can reduce lighting’s carbon footprint.
Whereas large players keep trying to drive
the adoption of their proprietary systems,
momentum is building behind the broad-based
EnOcean Alliance for networked controls in the
indoor lighting market. Here again, Future
Lighting Solutions is playing an important role in
encouraging suppliers to back wider adoption
of an open standard – leveraging, for example,
Philips SR or Inventronics ‘dim to off’ LED
drivers, together with Magnum Energy
Solutions’ Opus Node range in order to
optimise system integration.
Indeed, the Magnum demonstration kits
shown by Future Lighting Solutions at Light +
Building provide a good basis for manufacturers
wishing to implement the EnOcean wireless
control technology. So while the big Light +
Building show might be over, the smart lighting
revolution continues.
François Mirand
EMEA Technical Director, Future Lighting Solutions
EMAIL [email protected] FOR SAMPLES AND DATASHEETS
Despite their small 2.8mm x 3.5mm footprint,
the LUXEON 2835 LEDs are notable for their
high lumen output and good efficacy. With a
maximum drive current of 240mA, the LUXEON
2835 can be used to reduce LED count in new
designs, and its standard footprint allows for
drop-in replacement of other LEDs in existing
designs.
Supplied in five different configurations of
voltage and die count, the LUXEON 2835 can
fit a wide variety of application requirements.
The parts are available in versions with a
minimum CRI of either 70 or 80, and offer
luminous efficacy of up to 156 lumens/W at
their binning current.
The typical luminous flux output from the
LUXEON 2835 devices is rated at up to 83
lumens for parts with a nominal forward current
of 60mA, and up to 113 lumens for the 120mA
parts.
The LUXEON 2835 series is supplied in
versions with a Correlated Colour Temperature
(CCT) of 2,700K, 3,000K, 3,500K, 4,000K,
5,000K, 5,700K or 6,500K.
ENERGY
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Indoor area lighting
Lamps
FEATURES
STAR
PRODUCT
• CCT hot-targeted at a junction
temperature of 85°C
• 3-, 4- and 5-step Macadam ellipse colour
kits available for very tight colour control
• 120° viewing angle (full-width halfmaximum)
• Case operating-temperature range:
-40°C to 105°C
• Class 2 ESD sensitivity
160402:
For samples or pricing e-mail
[email protected]
LUXEON 2835: standard LED footprint
SuperMESH 5 technology makes for highly efficient
800V MOSFET
STMICROELECTRONICS
STMicroelectronics has brought highefficiency MOSFET technology to 800V
applications with the 6A-rated
STx7N80K5.
This N-channel Zener-protected power
MOSFET uses ST’s avalanche-rugged, very
high-voltage SuperMESH™ 5 technology, which
is based on an innovative vertical structure
developed by ST. This structure produces
MOSFETs characterised by very low
on-resistance and gate charge, making them
perfect for applications which require high
power density and efficiency.
In particular, designers can use very highvoltage MOSFETs to meet the stricter power
and efficiency targets laid down by the latest
eco-design standards, and to realise green
energy applications such as solar microgenerators and charging points for electric
vehicles.
The new device is available in a range of
packages: the STD7N80K5 in a PAK package,
the STP7N80K5 in a TO-220, the STU7N80K5
in an IPAK, the STFI7N80K5 in an I2PAKFP
and the STL7N80K5 in a PowerFLAT 5x6 VHV.
ST's SuperMESH 5 MOSFETs are the industry’s
first super-junction MOSFETs to be capable of
withstanding peak voltages up to 1,200V. As
well as the 800V STx7N80K5, the series also
includes 850V, 900V, 1,050V and 1,200V
devices, each offering the best-in-class MOSFET
figure of merit.
ST also has a 600V, 5A N-channel power
MOSFET based on a new generation of
MDmesh™ technology, MDmesh II Plus™. The
fabrication technology used in the STx7N60M2
series yields extremely low on-resistance and
gate charge. The STx7N60M2 is therefore
suitable for the most demanding high-efficiency
converter designs.
WORKING PARTNER ST’s FERD30SM100S: page 5
ENERGY
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Flyback switching power supplies
LED drivers
FEATURES (STx7N80K5)
• 13.4nC total gate charge at 10V, 6A
• Maximum 1.2Ω on-resistance at 10V, 3A
• 100% avalanche-tested
• Operating junction-temperature range:
-55°C to 150°C
160403:
For samples or pricing e-mail
[email protected]
MDmesh II Plus MOSFET: low on-resistance and gate charge
VISIT THE ONLINE FTM MAGAZINE AT: WWW.MY-FTM.COM
3
COMPONENT
FOCUS
COMPONENT
Qi IC provides complete power stage for a wireless
energy transmitter
NXP SEMICONDUCTORS
NXP Semiconductors’ new NXQ1TXH5
is a controller and driver transmitter IC
for a 5V Qi-compliant low-power
wireless charger.
It offers a fully integrated solution
which includes a 5V full-bridge
power stage as defined in the Qi
standards A5, A11, A12 and A16
specified by the Wireless Power
Consortium (WPC).
The 5mm x 5mm NXQ1TXH5
uses analogue ping circuitry to detect
Qi receiver devices. This detection
circuit uses very little power in the wait state:
the chip’s stand-by power consumption is
typically just 10mW.
After a Qi-compliant receiver is recognised,
the NXQ1TXH5 safely initiates wireless power
transfer from the transmitter to the receiver,
while monitoring for fault conditions such as
overheating or interference from metal objects
by supporting the Foreign Object Detection
(FOD) function.
The NXQ1TXH5 is best operated from a 5V
USB power supply, and automatically adjusts
the output power to compensate for powerconstrained supplies.
LED outputs and a buzzer output are
available for the user interface. The LED
outputs feature a number of blinking
modes. Multiple NXQ1TXH5-based
transmitters may operate from a
single USB power supply, since the
devices are able to limit the power
consumed by each device.
FREE
BOARDS
The NXQ1TXH5DB1401 is a slim demo board of a WPC
1.2 Qi-compliant single-coil wireless charger.
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
ON Semiconductor has released its
OmniClock family, a series of one-time
programmable, low-power PLL-based
clock generators which support any
output frequency from 8kHz to 200MHz.
The OmniClock devices are extremely flexible
programmable clock generators, providing
more features on a single device than any other
on the market.
They accept either a fundamental-mode
parallel resonant crystal or a single-ended lowvoltage CMOS (LVCMOS) reference clock as
their input. Their input-frequency range is
3MHz-200MHz with a reference clock, and
3MHz-50MHz with a crystal. They
generate either three single-ended
LVTTL/LVCMOS outputs, or one
Product
single-ended LVTTL/LVCMOS output
and one differential LVPECL/LVDS/
NB3H60113G
HCSL/CML output of up to 200MHz.
The output signals may be
NB3H63143G
modulated using the spreadNB3V60113G
spectrum feature of the PLL. The
IC’s programmable spread-spectrum
NB3V63143G
engine allows the configuration of the
4
type, deviation
and rate of
modulation. This
is ideal for
applications
demanding a low
level of electromagnetic
emissions.
Individual
OmniClock: flexible low-power clock
Output Enable
pins are available
to enable and disable the outputs, helping to
reduce power consumption. In addition,
individual Output Voltage pins are available to
independently set the voltage of each output to
1.8V, 2.5V or 3.3V.
The Clock Cruiser software tool for
configuring and programming the OmniClock
devices is available free for download from the
ON Semiconductor website.
Individual
Output
Enable Pins
Individual
Output
Voltage Pins
Supply
Voltage (V)
Package
Type
No
No
2.5
3.3
WDFN-8
Yes
Yes
2.5
3.3
QFN-16
No
No
1.8
WDFN-8
Yes
Yes
1.8
QFN-16
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
• Wireless Power Consortium (WPC) Qi
wireless power transmitters
• 1-3W wireless charging for wearable
devices, remote controls, toys, medical
tools and small home appliances
FEATURES
• Up to 8W Transmit power
• Over-current protection
• Over-temperature protection
• Exceeds EN55022 specifications for
radiated and conducted emissions
Very few external components required
Integrated coil current measurement
Dual-channel ASK communication with
receiver
•
•
•
Orderable Part Number: NXQ1TXH5DB1401
Flexible clock generator offers wide
input- and output-frequency ranges
ON SEMICONDUCTOR
ENERGY
160404:
ENERGY
INDUSTRIAL
For samples or pricing e-mail
[email protected]
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
•
•
•
•
•
•
•
Wearable devices
Digital cameras
Camcorders
Set-top boxes
Printers
eBooks
Media players
FEATURES
• 100ps jitter
• Programmable internal crystal load
capacitors
• Programmable output drive current for
single-ended outputs
Programmable PLL bypass mode
Operating ambient-temperature range:
-40°C to 85°C
•
•
160405:
FOCUS
100V rectifier features low leakage
current and thermal resistance
STMICROELECTRONICS
The FERD30SM100S and FERD20H100S
are new 100V field-effect rectifiers from
STMicroelectronics which benefit from
proprietary fabrication technology.
ST’s silicon rectifier technology produces
devices with a superior combination of
forward-voltage and reverse-current values for
any given silicon area.
This outstanding capability has been used to
make rectifiers which are ideally suited to
space-constrained designs, in which both high
efficiency and low thermal resistance are of
great importance. In the FERD30SM100S the
junction-to-case thermal resistance is rated at
1.6°C/W.
Power losses are kept to a low value thanks
to the FERD30SM100S’ low forward-voltage
drop, measured at just 0.50V at a forward
current of 10A and a junction temperature of
125°C. The maximum reverse leakage current
is just 9mA at a junction temperature of 125°C
and a reverse voltage of 70V.
Part Number
Package
Maximum
Average Rectified
Current (A)
Maximum
Forward Voltage
at 125°C (V)
Maximum Reverse
Current (mA) at 125°C,
Reverse Voltage = 70V
FERD30SM100ST
TO-220AB
30
0.710
9
PowerFalt 5x6
30
0.710
9
FERD20H100STS
TO-220AB
20
0.705
7
FERD20H100SH
IPAK
20
0.705
7
FERD20H100SFP
TO-220FP
20
0.705
7
FERD20H100SB
DPAK
20
0.705
7
FERD30SM100DJF
™
WORKING PARTNER ST’s STx7N80K5: page 3
ENERGY
•
•
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
General electronics systems
FEATURES
30A average forward current
250A maximum surge-current capability
175°C maximum junction temperature
160406:
For samples or pricing e-mail
[email protected]
Low-power automotive Ethernet PHY for
use with UTP cable
NXP SEMICONDUCTORS
The TJA1100 from NXP Semiconductors
is an IEEE 100BASE-T1-compliant
Ethernet physical layer device for use
in automotive networks. The IEEE
100BASE-T1 designation was formerly
known as OPEN Alliance BroadR-Reach.
The device provides a full duplex 100Mbits/s
transmit and receive capability over a single
Unshielded Twisted Pair (UTP) cable, supporting
a cable length of at least 15m thanks to its
adaptive receiver equaliser. The transmitter is
well suited for capacitive coupling to twistedpair cable.
The TJA1100 features a configurable pulse
amplitude in the transmitter, which is adjusted
to suit the cable length. It also implements a
remote wake-up mechanism that enables the
PHY to enter a low-power sleep mode when
Ethernet communication is not needed. The
Ethernet link then can be re-enabled by
waking-up the TJA1100 with messages
carried over the UTP cable itself. Both these
features help the system designer to keep
power consumption to a minimum.
The TJA1100
includes the ability to
diagnose cabling
errors, identifying
shorts and opens. It is rated for operation over
a temperature range of -40°C to 125°C.
ENERGY
•
•
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Automotive Ethernet networks
Automotive IP camera links
Driver-assistance systems
Automotive backbone networks
FEATURES
For samples or pricing e-mail
[email protected]
• Enhanced integrated PAM-3 pulse
shaping for low RF emissions
• Low-power sleep mode with local
FREE
wake-up
• Robust remote wake-up via the bus lines
• ±6kV ESD protection
• Protection against transient voltages
• AEC-Q100 qualified
BOARDS
The evaluation kit for the OmniClock clock generator
includes a main board, daughterboard, USB cable and
three samples of each supported device.
Orderable Part Numbers:
NB3X6X1XXG8DFNEVK or
NB3X6X1XXG16QFNEVK
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
FOLLOW US NOW – SEARCH FTM BOARD CLUB ON
160407:
For samples or pricing e-mail
[email protected]
TJA1100 Ethernet PHY: 100Mbits/s data rate suitable for automotive infotainment networks
VISIT THE ONLINE FTM MAGAZINE AT: WWW.MY-FTM.COM
5
COMPONENT
FOCUS
COMPONENT
600V IGBT offers efficient operation and
fast switching
WORKING PARTNER ST’s STPSCxxTH13TI: page 7
ON SEMICONDUCTOR
ENERGY
ON Semiconductor’s NGTB75N60FL2
is a 600V IGBT with a co-packaged
diode which features a robust and costeffective field-stop trench construction,
and provides superior performance in
demanding switching applications. Its
maximum collector current at a case
temperature of 100°C is 75A.
The NGTB75N60FL2 is notable for its extremely
efficient performance, the result of its low
on-state voltage and low switching losses.
Forward voltage is rated at a typical 2.2V at a
forward current of 75A. The turn-on switching
loss is a typical 2.2mJ and turn-off switching
loss is 1.1mJ, giving total switching losses of
just 3.3mJ when supplying a collector current
of 75A at 400V.
In these conditions, the rise time is 48ns
and the turn-on delay is 110ns. Fall time is
70ns and the turn-off delay is 270ns. The
typical gate charge is specified at 310nC.
•
•
•
•
•
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Solar inverters
Uninterruptible power supplies
Welding equipment
FEATURES
175°C maximum junction temperature
Soft and fast reverse-recovery diode
Suitable for high-speed switching
5µs short-circuit capability
160408:
For samples or pricing e-mail
[email protected]
NGTB75N60FL2: efficient operation in solar inverters
New 20V trench MOSFETs offer high power capability
NXP SEMICONDUCTORS
NXP Semiconductors has introduced
two new 20V, N-channel trench MOSFETs
which are ideal for use in LED drivers
and other types of power-switching
circuits. The PMN16XNE and PMN30UNE
are N-channel enhancement-mode
trench MOSFETs housed in a small
SOT457 (SC-74) surface-mount plastic
package.
Rated for a maximum drain-source voltage of
20V, the PMN16XNE is easy to drive, featuring
a maximum gate-source voltage of ±12V.
The MOSFET has an unusually high powerdissipation capability of 1.4W when mounted
on an FR4 PCB, and provides more than 1kV
of protection against electro-static discharge
according to the human body model.
The PMN30UNE has a slightly lower powerdissipation capability than the PMN16XNE, at
1.24W. Its gate-source voltage is rated at a
maximum ±8V. It offers the same level of
protection against ESD strikes as the
PMN16XNE.
ENERGY
STMicroelectronics has launched a
series of dual-configuration Schottky
Silicon Carbide (SiC) diodes in a
choice of common-cathode or series
configurations, allowing their use in
interleaved or bridgeless Power-Factor
Correction (PFC) circuits.
Like other types of SiC power semiconductors,
the new SiC diodes are inherently more energy
efficient and rugged than equivalent silicon parts.
EMAIL [email protected] FOR SAMPLES AND DATASHEETS
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
LED drivers
Power management
Low-side load switches
Switching circuits
FEATURES (PMN16XNE)
• 6.9A maximum continuous drain current
at an ambient temperature of 25°C
• 15mΩ on-resistance
• 12nC total gate charge
• 15K/W thermal resistance from junction to
solder point
• Junction-temperature range:
-55°C to 150°C
160410:
For samples or pricing e-mail
[email protected]
NXP 20V MOSFETs: 1kV ESD capability
The STPSCxxTH13TI and STPSCxxH065C
devices combine the performance advantages
of the SiC material with the space savings and
reduced EMI emissions that are a feature of
dual integrated diodes.
The new ST diodes eliminate energy losses
due to reverse recovery at turn-off, resulting in
very high switching efficiency. The high 650V
voltage rating provides a large safety margin
for extra protection against hazardous reversevoltage spikes.
In addition, ceramic isolation built into the
package of the STPSCxxTH13TI devices
simplifies their attachment to an external heatsink, enabling the usual external isolation
material to be eliminated, and to improve the
thermal resistance by 19% compared to a
standard TO-220AB package.
Package
Maximum
Average
Rectified
Current (A)
Maximum
Forward
Voltage (V)
Maximum
Reverse
Current (mA)
Total
Capacitive
Charge
(nC)
STPSC10TH13TI
Insulated TO-220AB
10
STPSC12H065C
TO-220AB
12
1.75
0.1
28.5
1.75
0.06
18
STPSC16H065C
TO-220AB
STPSC2006CW
16
1.75
0.08
23.5
TO-247
20
1.7
0.15
12
STPSC20H065C
D2PAK; TO-220AB; TO-247
10
1.75
0.1
28.5
STPSC40065C
TO-247
40
2.2
0.3
42
STPSC6TH13TI
Insulated TO-220AB
6
1.75
0.06
18
STPSC8H065C
TO-220AB
8
1.75
0.04
12.5
STPSC8TH13TI
Insulated TO-220AB
8
1.75
0.08
23.5
Part Number
6
LIGHTING
APPLICATIONS
•
•
•
•
ST SiC diodes: very high switching efficiency
WORKING PARTNER ON Semi’s: NGTB75N60FL2: page 6
ENERGY
For more information e-mail
[email protected]
INDUSTRIAL
Space-saving 650V SiC diodes offer dual configurations
for improved safety and energy efficiency
STMICROELECTRONICS
160409:
FOCUS
•
•
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Server power supplies
Telecoms power supplies
Solar inverters
Electric-vehicle charging stations
FEATURES
• High forward surge-current capability
• Switching behaviour independent of
•
temperature
175°C maximum junction temperature
160411:
FOLLOW US NOW – SEARCH FTM BOARD CLUB ON
For samples or pricing e-mail
[email protected]
7
P•I
•
E
COMPONENT
DESIGN
FOCUS
NOTE
SECTION
Illuminated anti-vandal switches offer wide range of
colour and voltage options
E-SWITCH
ENERGY
E-Switch’s family of anti-vandal switches includes the UL-certified ULV4 series,
which offers a rating of 3A and 250V AC. The ULV4 switches are IP67-rated, and
have a long operating life of up to 1,000,000 cycles for momentary operation, or
500,000 for latching operation.
Options include dot, ring or power symbol illumination. There are also many LED colour and
voltage options. The switches are supplied in a 19mm panel cut-out size, and configured for either
single-pole, double-throw or double-pole, double-throw operation. E-Switch also supplies the
ULV7 series, which comes in a 22mm panel cut-out size, and the 25mm ULV8 series.
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
By Thomas Britnell
Field Applications Engineer, Future Electronics (Germany)
APPLICATIONS
End-products requiring vandal resistance
FEATURES (ULV4)
• 50mΩ contact resistance
• 1,000MΩ insulation resistance at
•
•
Efficient, reliable – and now simple to implement:
a new approach to BLDC motor design
500V DC
2,000V AC dielectric strength
3.2mm travel
ON SEMICONDUCTOR
The Brushless DC (BLDC) motor is the most efficient and
reliable motor type in widespread use today. But while its
performance and characteristics are attractive, it is complex
to operate in most applications, and this has discouraged
some design engineers from considering its use.
The semiconductor industry is now, however, providing more and more
support to designers making the shift from brushed to brushless motor
designs. In particular, they are providing integrated motor-driver ICs
which reduce the complexity of both the hardware and software
elements of the design. This article describes the application of one of
these devices, the LV8907 from ON Semiconductor.
160412:
For samples or pricing e-mail
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E-Switch anti-vandal switches: variety of colour options for illumination
Launch of high-current, wire-to-board powersupply connector
HIROSE
Hirose has introduced the DF22, a series
of high-powered wire-to-board
connectors offering high reliability in
industrial applications.
The connector range consists of cable-mount
female crimp sockets and PCB-mount vertical
and right-angle male headers. Panel-mount inline and free hanging in-line
headers are available to enable a
cable-to-cable connection for
increased design flexibility.
All versions can handle up to
30A current, when the application
uses a single-position connector
with an AWG10 crimp contact
and cable.
The contacts on the header are
protected by the robust internal
walled structure, which prevents
short-circuits between adjacent
contacts. The connector can
withstand a voltage up to 2.5kV
for one minute.
The locking mechanism provides a positive
tactile sensation and an audible click when
mated. This confirms the connector is fully
engaged, guaranteeing complete electrical and
mechanical connection.
The lock is on the centre of the housing to
avoid uneven locking and cable entanglement,
a common fault of side locks. In addition,
multiple connectors can be mounted closer
together side by side.
Separate contact retainers are available to
increase the retention force for applications
where excessive pull-forces may be applied to
the cable.
Keying variations are available to prevent
incorrect insertion of the mating connector
when multiple connectors are used. Built-in
guide posts ensure accurate connector
positioning and orientation on the PCB.
ENERGY
•
•
•
•
•
•
•
•
•
•
INDUSTRIAL
LIGHTING
MEDICAL
Benefits of BLDC motor technology
Most electric motors used today are more or less identical to the first
electric motors developed in the 19th century: they still include a
commutator and mechanical brushes. As long ago as 1889, however,
Nikola Tesla demonstrated that a three-phase brushless motor could
increase energy efficiency by up to 20% compared to brushed motors.
By eliminating mechanical brushes and slip rings, brushless motors also
significantly increase system reliability.
They also operate more quietly, and are not prone to brush arcing
(sparking), which can disturb electrical equipment such as phones,
radios and wireless communication networks. Arcing also generates
ozone and carbon dust and can be a potential source of fire when
exposed to inflammable substances.
The appeal of brushed motors, of course, is that they are simple to
implement. A DC voltage drives the motor: vary the voltage and the
speed varies proportionately. In a BLDC motor, the commutator is
eliminated, and this results in a much more complex system. In order to
drive a BLDC motor efficiently the three motor phases have to be
switched in turn with three external half bridges for uni-directional
rotation, as shown in Figure 1.
CONSUMER TELECOMMS
APPLICATIONS
LED lighting
Robots
Medical devices
Servers
Industrial controllers
FEATURES
1-5 contact positions for most versions
Current rating: 13A to 30A
30 mating cycles
Voltage rating: 1,000V AC-DC
UL, C-UL and TÜV-recognised
160413:
For samples or pricing e-mail
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DF22 series: lock on centre of housing prevents cable entanglement
8
AUTOMOTIVE SECURITY
EMAIL [email protected] FOR SAMPLES AND DATASHEETS
When an electric motor turns, the moving permanent magnets induce a
back-electromagnetic force (back-EMF) voltage in the coils which can be
detected at the motor’s terminals, as shown in Figure 2.
Fig. 1: Half bridge for driving a BLDC motor
The rotating electric field is created by synchronising six PWM signals;
the field needs to be matched to the speed and position of the rotor in
order to drive the motor efficiently. This requires feedback about the
motor’s position. This can be provided by a position sensor. The position
can also be calculated without the need for a sensor, using back-EMF
measurement.
Fig. 2: Two phases of a BLDC motor’s operation. The back-EMF ramp may be seen in the green and
yellow signals, superimposed on switching signals before and after the PWM driving state
Complex hardware and software requirements
It is obvious from the previous sections that, compared to brushed DC
motors, a brushless motor drive requires more components and a more
complex circuit design. In developing the LV8907 motor-drive controller,
however, ON Semiconductor has attempted to make the
implementation of a BLDC motor-control system almost as easy as that
of a brushed motor.
The LV8907 is a 12V, automotive-compatible BLDC motor controller
for stand-alone applications without a microcontroller. Once the system
parameters have been loaded into the IC, an integrated state machine
handles the sensorless brushless motor control. A speed feedback
signal is included, as well as an internal speed-control algorithm with PI
controller.
This means that the only input required to run a motor using the
LV8907 is a single, low-frequency PWM signal – the same input as for a
simple brushed motor. This PWM signal is either translated into the
motor voltage directly, or used to select a programmed motor speed from
nine internal speed registers. The driver IC will then apply this speed in a
speed-control loop independent of load and supply-voltage variations.
An internal regulator is included to provide power to a small 5V or
3.3V microcontroller, in case a more complex user-interface protocol
needs to be implemented. This MCU can interface with the LV8907 via
the Serial Peripheral Interface (SPI), and can use the integrated LIN
transceiver and watchdog. In this configuration, the MCU performs the
interface and application tasks while the LV8907 handles the motor
commutation.
The LV8907 also includes a wide range of safety features to protect
the application. These include:
• Short-circuit and over-current protection
• Over-temperature protection in the IC and MOSFETs
• Over- and under-voltage protection
• Rotor-blockage detection
Summary
In addition to making BLDC motor control easy by eliminating the need
for software implementation, the LV8907 also reduces hardware
requirements as it includes the pre-driver, charge pump, the currentsense circuit as well as an optional linear regulator and LIN transceiver.
Thus all that is required to drive a BLDC motor is a PWM input, six
power FETs, a shunt resistor and a few external capacitors and resistors.
160414:
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9
CIRCUIT
CENTRE
CIRCUIT
Smart Lighting Controller
The smart light of tomorrow will be required to respond
intelligently both to central commands, transmitted via
standard protocols such as the Digital Addressable Lighting
Interface (DALI) and KNX, and to local inputs such as ambient
light sensor measurements and proximity sensor signals.
The functional blocks that such a design might include are
shown on this page, and the latest and best components
for each block are featured in this month’s Circuit Centre.
PFC and current-mode PWM controller provides
integrated solution for driving LEDs
BUCK/BOOST
LED DRIVER
n BUCK/BOOST LED DRIVER
Diodes: ZXLD137X
Diodes: ZXGD3105
Diodes: AL8811/12
Diodes: PAM2842
Diodes: BCR420
Exar: iML8683
Exar: XR46050
Fairchild Semiconductor: FL7921
Fairchild Semiconductor: FSL3276ALR
Intersil: ISL8117/A
Intersil: ISL1904
NXP Semiconductors: SSL5021BTS
ON Semiconductor: NCP3065
ON Semiconductor: NCL30000
ROHM Semiconductor: BD65D00MUV
STMicroelectronics: STLUX285A
STMicroelectronics: STLUX385A
Vishay: VLMW712 series
Recommended parts for smart lighting controller
n POWER SUPPLY
Diodes: AL6562
Diodes: SBRT10A100CTL
Diodes: SBRT15U100SP5
Diodes: S1MWF
Diodes: RS1MSWF
Fairchild Semiconductor: FSL3276ALRN
Intersil: ISL1904
ROHM Semiconductor: BM2Pxx
STMicroelectronics: VIPer0P
TE Connectivity: Nector S Line
n PHY
Microsemi: VSC8501
ON Semiconductor: NCN5120
n MCU
Cypress: CY8CLED04D01 PowerPSoC
Cypress: CY8CLED04D02 PowerPSoC
Cypress: CY8CLED04G01 PowerPSoC
NXP Semiconductors: JN5148
NXP Semiconductors: LPC1758FBD80
STMicroelectronics: STSW-STM8025
STMicroelectronics: STM8S
n AMBIENT LIGHT SENSOR
Intersil: ISL29147
ON Semiconductor: NOA3302
Panasonic: AMS302/T
ROHM Semiconductor: RPR-0521RS
TE Connectivity: Poke-In Connector
Vishay: VEML6040
Fairchild’s FL7921R combines a Power
Factor Correction (PFC) controller and a
quasi-resonant PWM controller to provide
a complete power-control solution for
driving LEDs.
For PFC control, the FL7921R uses a
controlled on-time technique to provide a
regulated DC output voltage. Innovative
technology in the device reduces input-current
distortion at the zero-crossing point to reduce
harmonic distortion. The PFC function is always
on regardless of the PWM stage’s status,
n OPTO
Everlight: EL20x/21x series
Fairchild Semiconductor: HMHA281
Fairchild Semiconductor: HMHA2801
Vishay: VOM617A/618A
LED
•Lumileds:
LUXEON 2835
n ISM RADIO RECEIVER
Atmel: ATA8205
Semtech: SX1239
ON Semiconductor: AX5043
STMicroelectronics: Spirit1
DEVELOPMENT TOOLS
Atmel: AT01244
Intersil: ISL8117DEMO1Z
Intersil: ISL8117DEMO2Z
n NFC READER
NXP Semiconductors: PN7120
POWER
NXP SEMICONDUCTORS
By embedding NFC capability in end nodes,
such as smart light bulbs, and in a network
gateway, manufacturers can enable ‘tap and
go’ commissioning of network devices.
Because the NFC wireless link only works over
a short distance, it is inherently secure, and it is
also easy to use and does not require the user
to input a security key or password.
The PN7120 NFC controller, for implementing
NFC reader functionality in a gateway, comes
10
ensuring that a high power factor is maintained
even in light-load conditions.
For PWM operation, the FL7921R provides
several functions to enhance performance,
including valley detection, green-mode operation
and high-/low-line over-power compensation.
The FL7921R is featured in a Fairchild
reference design, RD-570, for a 100W smart
LED lamp, which operates from a universal
input-voltage range of 90V to 305V AC, and
has an output of 50V/2A. The design achieves
efficiency of 91.56% at an output voltage of
47V when operating from a 50Hz mains input
at 230V AC.
with complete on-chip NFC firmware and an
NFC Controller Interface (NCI) designed for
contactless communication at 13.56MHz.
It consists of a full-featured RF front-end and
an ARM® Cortex®-M0 microcontroller core
loaded with firmware supporting the NCI 1.0
host communication protocol. This embedded
firmware supports every NFC protocol. Linux
and Android™ drivers as well as an IoT support
package for the Windows® operating system
provide for fast integration into various
operating environments.
The NTAG I2C plus is a family of connected,
Type 2 NFC tags which combine a passive,
wireless NFC interface with a wired I2C interface.
The NT3H2111 and NT3H2211 offer a fast
and simple way to add tap-and-go connectivity
to end nodes such as smart light bulbs.
INDUSTRIAL
LIGHTING
HEALTHCARE TRANSPORT
SECURITY
CONSUMER TELECOMMS
FEATURES (PN7120)
• NCI operates over I²C host interface
• Full compliance with all NFC standards
• Buffered output drivers to connect an
antenna with few external components
160415:
For samples or pricing e-mail
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FREE
BOARDS
HEALTHCARE TRANSPORT
SECURITY
CONSUMER TELECOMMS
APPLICATIONS
• Medium- to high-power LED lighting
drivers
FEATURES
• Brown-out protection
• Over-current protection
• Open-loop protection
• Over-temperature protection
• Adjustable over-temperature threshold
using external temperature sensor
160416:
For samples or pricing e-mail
[email protected]
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
Fairchild’s FL7921R: high power factor in full- and low-load conditions
FAIRCHILD SEMICONDUCTOR
Fairchild’s FSL3276ALR is an integrated AC-DC converter
which allows designers to implement a high-performance
offline buck, buck-boost or non-isolation flyback SwitchedMode Power Supply (SMPS) with few external components.
Featuring a PWM controller and a 650V ‘SenseFET’ MOSFET, the
regulator enables operation of the SMPS without an auxiliary bias
winding. An internal transconductance amplifier reduces the number of
external components required in the feedback compensation circuit.
The FLS3276ALR is featured in a Fairchild design for a 0.25W auxiliary
power supply. It is demonstrated in the FEBFSL3276ALRN evaluation
board, which has an input-voltage range of 85V to 145V AC, and a fullload output of 50mA at 5V. The board measures just 18mm x 18mm.
• Low power losses in stand-by mode
• Under-voltage lock-out
• Integrated gate driver
• EMI attenuator
FREE
Orderable Part Number: OM5577
Orderable Part Number: FEBFSL3276ALRN
EMAIL [email protected] FOR SAMPLES AND DATASHEETS
LIGHTING
Orderable Part Number: FEBFL7921RMX_L65U100A
The PN7120 NFC Controller Single-Board Computer
(SBC) kit is both flexible and easy-to-use. It contains a
PN7120 NFC controller board, a Raspberry Pi interface
board, a BeagleBone interface board, as well as an NFC
Forum Type 2 tag in the form of a MIFARE® Ultralight card.
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
INDUSTRIAL
BOARDS
AC-DC converter IC requires few
external components
Lumileds: LUXEON M
Lumileds HR30
Vishay: VLMW712
Tag and controller ICs provide end-to-end solution for NFC
communication
NXP Semiconductors’ PN7120, an NFC
controller IC, and the NTAG I2C plus, an
NFC Forum Type 2 tag with an I2C
interface, enable the easy integration of
NFC functionality into lighting-control
systems.
POWER
FREE
BUCK/BOOST
LED DRIVER
NFC
READER
FAIRCHILD SEMICONDUCTOR
n MOTION SENSOR
Diodes: PT8A2651
Intersil: ISL29147
Murata: IRA-S
ROHM Semiconductor: RPR-0521RS
STMicroelectronics: VL6180X
n REAL-TIME CLOCK
Diodes: PT7C4339
Intersil: ISL12022M
NXP Semiconductors: PCF2129
ROHM Semiconductor: BU9873x
STMicroelectronics: M41T00CAP
STMicroelectronics: M41T62
CENTRE
BOARDS
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
160417:
For more information
e-mail [email protected]
Four-channel LED driver
provides accurate current
output
BUCK/BOOST
LED DRIVER
ROHM SEMICONDUCTOR
The BD65D00MUV from ROHM Semiconductor is a fourchannel LED driver IC with a boost DC-DC converter.
Operating from an input range of 6V27V DC, it can step the output up to a
maximum of 41V and drive up to
100mA through each channel. The
brightness of the LEDs may be
controlled through an external PWM
input.
The BD65D00MUV provides a very
accurate current output, to ensure
uniform brightness across an array of
LEDs. It is housed in a flat 5mm x 5mm
x 1mm space-saving package.
• Switching frequency range: 600kHz to
1.6MHz
• Integrated 50V N-channel power
MOSFET
• Various safety and protection functions
built-in
FOLLOW US NOW – SEARCH FTM BOARD CLUB ON
160418:
For more information
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11
CIRCUIT
CENTRE
Step-down power controllers feature
wide input- and output-voltage ranges
INTERSIL
BUCK/BOOST
LED DRIVER
The devices use settings of a single resistor for
configuring functions such as operating
frequency and over-current protection. Their
low-ripple diode-emulation mode with pulse
skipping at light loads dramatically lowers
stand-by power consumption, while providing
consistent output ripple at various load levels.
The ISL8117A is a derivative of the ISL8117
which replaces its Clkout pin with a Comp pin to
provide flexibility to users who wish to configure
the voltage loop compensation externally.
The ISL8117 and ISL8117A from Intersil
are synchronous buck controllers which
feature a wide input-voltage range, and
offer an output-voltage capability up to
54V suitable for driving a string of LEDs.
The controllers use the valley currentmodulation technique to provide an easy-toimplement power-supply design which
requires only a small number of external
components.
The 4mm x 4mm ISL8117 and
ISL8117A feature programmable softstart and enable functions and a powergood indicator for ease of supply-rail
sequencing and to support other
housekeeping requirements. In some
situations, a complete power-supply
circuit based on the ISL8117/ISL8117A
can be designed with just ten external
components, while providing overvoltage, over-current and overtemperature protection.
LIGHTING
HEALTHCARE TRANSPORT
SECURITY
CONSUMER TELECOMMS
APPLICATIONS
LED panels
PLC and factory automation
Security surveillance
Server and data centres
FEATURES
• Current-mode control with input-voltage
feed-forward
• Input-voltage range: 4.5V to 60V
• Output-voltage range: 0.6V to 54V
• Programmable soft-start
• Programmable frequency range: 100kHz
to 2MHz
160419:
For samples or pricing e-mail
[email protected]
BOARDS
The ISL8117DEMO1Z and ISL8117DEMO2Z
demonstration boards are designed for high-current
applications using the ISL8117 buck controller. The
current rating is limited by the FETs and inductor
selected, but the ISL8117’s gate driver is capable of
delivering up to 20A for the buck output.
Orderable Part Numbers:
ISL8117DEMO1Z and ISL8117DEMO2Z
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
INTERSIL
The ISL1904 LED driver IC is a flyback controller used for
single-stage conversion of AC mains to a constant-current
source with Power Factor Correction (PFC).
The ISL1904 LED driver provides all of the features required for highperformance dimmable LED ballast designs. It supports both AC and
DC inputs, and can be used to implement isolated or non-isolated
flyback and boost topologies.
Operating in critical conduction mode, the controller regulates the
output current by monitoring the primary-side switching current so that
the feedback signal does not cross the isolation barrier.
• Excellent LED current regulation over line,
load and temperature
• 0-100% dimming with leading-edge (triac)
and trailing-edge dimmers
• Up to 0.995 power factor and less than 20%
harmonic content
FREE
Digital power controller provides versatile
architecture for multi-channel LED systems
BUCK/BOOST
LED DRIVER
STMICROELECTRONICS
The STLUX385A from STMicroelectronics is a versatile,
programmable controller with a range of features which make it
easy to implement sophisticated LED-driver designs.
The STLUX385A features an innovative State Machine, Event Driven
(SMED) type of digital controller, and also includes an embedded 8-bit
processor core. The STLUX385A’s six SMEDs, operating as PWM
generators, may be used to control the current to six LED channels, or to
control the switching of any converter topology for driving strings of LEDs.
Since a SMED is implemented in hardware, it guarantees a reaction
time to events shorter than that provided by any normal interrupt-driven
processor core.
The STLUX385A also integrates a Digital Addressable Lighting Interface
(DALI) controller for remote management and monitoring of large-scale
lighting systems.
FREE
BOARDS
The STLUX385A is featured in two demo boards.
BOARDS
• 10ns event reaction time
• 1.3ns PWM resolution
• Compliant with IEC
60929 and IEC 62386
standards
Orderable Part Numbers:
Orderable Part Number: ISL1904DEMO1Z
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
12
•
•
•
•
INDUSTRIAL
FREE
Dimmable mains LED driver offers
PFC and primary-side regulation
BUCK/BOOST
LED DRIVER
POWER
160420:
For more information
e-mail [email protected]
STEVAL-ILL057V1: 100W digital 4 LED channels
STEVAL-ILL066V1: 200W street-lighting
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
EMAIL [email protected] FOR SAMPLES AND DATASHEETS
160421:
For more information
e-mail [email protected]
160422:
For more information
e-mail [email protected]
CIRCUIT
CENTRE
Light sensor mimics human
eye’s response to ambient
light
AMBIENT
LIGHT
SENSOR
PANASONIC
Panasonic’s AMS302T is a light sensor which provides an output
current proportional to the intensity of light incident on it.
The device’s peak sensitivity is
at a wavelength of light of
580nm. An optical filter built in
to the AMS302T ensures that its
sensitivity is close to that of the
human eye’s sensitivity to light.
This means that the device
may be used in an automatic
lighting-control system to adjust
the brightness of the output
from a luminaire in response to
the intensity of the ambient light.
• Operating temperature range:
-30°C to 85°C
• Reverse operating-voltage range:
1.5V to 6V DC
• Typical rise and fall times: 8.5ms
CIRCUIT
Ambient light sensor and proximity
sensor in a single package
AMBIENT
LIGHT
SENSOR
INTERSIL
TE CONNECTIVITY
POWER
SUPPLY
TE Connectivity (TE) has introduced its modular releasable
poke-in connector, a 4mm-pitch modular connector for
wire-to-board connections in LED lighting.
Two photo-diode arrays measure the amount of light in the visible
spectrum incident on the ISL29147. They mimic the human eye’s
response to the wavelength curve of visible light. In interior lightingcontrol applications, this means that higher or lower illuminance values
measured by the ISL29147 will reflect the user’s sense of the relative
brightness or darkness of the room.
The 12-bit ALS’s accuracy is enhanced by a passive optical filter
which removes unwanted infra-red and ultraviolet wavelengths.
The poke-in feature allows for easy and fast installation, and its modular
design gives the user flexibility to match the connection design to the
needs of the application.
The poke-in connector complies with the IEC 60598-1:2014 and IEC
60998-1:2002 standards. With 18 AWG wire it is rated for a maximum
current of 6A, and with 20 AWG or 22 AWG wire the maximum current
is 5A. Series part numbers are 2834006-1, 2834006-2, 2834006-3 and
1-2834006-2.
• 400V AC maximum
voltage
• UL1977 recognised
• Operating temperature
range: -40°C to 105°C
• I2C interface
• Programmable IR LED
drive current
• 0.2µA power-down
current
TE Connectivity and the TE Connectivity
logo are trademarks.
MOTION
SENSOR
STMICROELECTRONICS
Combining an IR emitter, a range sensor and an ambient light
sensor in a three-in-one ready-to-use reflowable package, the
VL6180X from STMicroelectronics is easy to integrate and
saves the end-product maker long and costly optical and
mechanical design optimisations.
Based on ST’s patented FlightSense™ technology, the VL6180X module
allows absolute distance to be measured independent of target
reflectance. The VL6180X precisely measures the time that light takes to
travel to the nearest object and to be reflected back to the sensor.
Ranging and ambient light measurements can be automatically
performed at user-defined intervals. Multiple threshold and interrupt
schemes are supported to minimise host operations.
• Measures absolute range up to 10cm
• Ambient light rejection
• Calibrated ambient light measurement
output in lux
FREE
BOARDS
160423:
160425:
For more information
e-mail [email protected]
Optical proximity and ambient
light sensor in integrated module
ROHM SEMICONDUCTOR
160427:
For more information
e-mail [email protected]
It includes an optical proximity sensor, ambient light sensor and infra-red
LED. The proximity sensor detects the presence of a human body, which
will reflect IR light back to the sensor within a range up to 100mm.
The ambient light sensor detects ambient visible light and infra-red light
over a very wide range of illuminance values from dark up to direct sunlight.
The measurement of ambient light enables smart lighting controllers to
dim artificial lighting and to save power when a space is partly or fully
illuminated by sunlight.
• I2C interface
• Supply-voltage range:
2.5V to 3.6V
• Illuminance
measurement range:
0 lux to 43klux
160428:
For more information
e-mail [email protected]
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
TE connector: flexible modular design
Colour sensor offers precise sensing of
red, green, blue and white ambient light
AMBIENT
LIGHT
SENSOR
For more information
e-mail [email protected]
Orderable Part Number: P-NUCLEO-6180X1
VISHAY
Infra-red sensors ideal for use in smart
lighting systems
POWER
The RPR-0521RS from ROHM Semiconductor is a new
proximity and ambient light sensor module.
Vishay has introduced a digital light sensor featuring Filtron™
technology for accurate sensing of red, green, blue and white
light. It provides a response to ambient light which is close to
that of the human eye.
The Vishay Semiconductors VEML6040 incorporates photo-diodes and
a signal-processing IC in a compact 2.0mm x 1.25mm x 1.0mm
surface-mount package. It senses red, green, blue and white light in
16-bit resolution for each colour channel. The VEML6040 is ideal for use
in smart lights and lighting-control systems, in which it enables the
brightness and colour temperature of the light output to be adjusted in
response to the ambient light.
The VEML6040's built-in ambient light photo-diode offers extremely
high sensitivity, detecting illuminance in a range from 0.007865 lux to
16.5 klux. The sensor is immune to fluorescent light flicker.
160424:
For more information
e-mail [email protected]
RPR-0521RS: works well even in dark conditions
14
Wire-to-board connector offers Combined range and ambient
light sensor in a module
quick, easy installation
Intersil’s ISL29147 is a low-power Ambient Light Sensor
(ALS) and proximity sensor with a built-in infra-red LED in a
single package measuring just 2.4mm x 4mm x 1mm.
Intersil’s ISL29147: mimics response of human eye
AMBIENT
LIGHT
SENSOR
CENTRE
EMAIL [email protected] FOR SAMPLES AND DATASHEETS
• <1µA current in shutdown mode
• Excellent temperature
stability from
-40°C to 85°C
• I2C interface
160426:
For more information
e-mail [email protected]
MURATA
MOTION
SENSOR
•
•
•
•
•
The IRA-S series from
Murata are leaded
pyroelectric infra-red
sensors which provide
a good signal-to-noise
ratio and reliable
performance.
Used in security equipment
as well as lighting-control
systems, the IRA-S series
sensors help designers to
prevent the risk of false
proximity detection events.
Used in smart lighting
systems, the IRA-S sensors
can enable a light to be
switched on and off
automatically depending on
whether a person is present
in the area to be illuminated.
INDUSTRIAL
LIGHTING
HEALTHCARE TRANSPORT
SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Security equipment
Wall light switches
Ceiling light switches
Security lighting
Cameras
FEATURES
• Superior RF immunity
• High reliability
• Supply-voltage range: 2V to 15V DC
• Operating temperature range:
-40°C to 70°C
160429:
For samples or pricing e-mail
[email protected]m
IRA-S sensors: suitable for presence detection
FOLLOW US NOW – SEARCH FTM BOARD CLUB ON
15
CIRCUIT
CENTRE
RTC module includes
temperature sensor and
crystal
REALTIME
CLOCK
INTERSIL
The RTC tracks time with separate registers for hours, minutes, and
seconds. The calendar registers track date, month, year and day of the
week, which are accurate through to the year 2099, with automatic
correction for leap years. It may be used for automatic control of
individual or networked lights according to the time and day.
The ISL12022M is supplied as a module which contains the RTC and
an embedded 32.768kHz quartz crystal. The calibrated oscillator has
less than ±5ppm drift over the full temperature range of -40°C to 85°C.
• Automatic back-up to
battery or
supercapacitor
• 1.6µA maximum
battery current
• I2C interface
160430:
For more information
e-mail [email protected]
High-brightness LEDs available in coolwhite, neutral and warm-white variants
VISHAY
Vishay’s Little Star® family of surface-mount power LEDs
includes a series of cool-white, neutral and warm-white
devices which offer high colour stability over temperature.
The VLMW712xxx LEDs offer a low thermal resistance of 10K/W while
providing high luminous intensity.
The 6mm x 6mm devices are intended to be driven at a high current
of up to 350mA, and offer high luminous intensity of up to 33,500mcd.
With their high brightness and low 1.5mm profile, the VLMW712xxx series
LEDs are suitable for conventional lighting and for specialised applications.
Part Number
Colour
Luminous Flux Range
Forward Current
Power Dissipation
VLMW712U2U3XV
VLMW712T3U3US
Cool white
Neutral white
VLMW712T2T3QN
Warm white
87lm to 113lm
77lm to 113lm
67lm to 87lm
350mA
350mA
350mA
1.4W
1.4W
1.4W
• 120° viewing angle
• 2kV ESD capability
160431:
For more information
e-mail [email protected]
16
REALTIME
CLOCK
STMICROELECTRONICS
STMicroelectronics’ M41T62 is a low-power serial RealTime Clock (RTC) with a built-in 32.768kHz oscillator.
Intersil’s ISL12022M is a low-power Real-Time Clock (RTC) with
an embedded 10-bit digital temperature sensor and crystal.
LED
Low-power serial real-time
clock with alarm
Functions available to the user
include a time-of-day
clock/calendar, alarm interrupts, a
32kHz output and a programmable
square-wave output. The eight clock
address locations contain the
century, year, month, date, day,
hour, minute, second and
tenths/hundredths of a second in
24-hour format.
The M41T62 RTC may be used in
building- and home-automation
lighting systems in which luminaires
are programmed to turn on and off
at particular times of day.
• I2C serial interface
• 350nA timekeeping current at 3V
• Software clock calibration can adjust
timekeeping to within ±5s per month
160432:
For more information
e-mail [email protected]
Multi-die LED offers tight
colour control and high flux
density
LED
LUMILEDS
The LUXEON M from Lumileds is an illumination-grade multi-die
LED which enables outdoor and industrial lighting applications
to gain the benefits of both high efficiency and low cost.
Because all LUXEON M production
units fall within a single 3- or 5-step
MacAdam ellipse centred on
ANSI-standard colour
temperatures, lighting equipment
manufacturers can rely on tight
colour consistency from LED to LED.
In addition, the LUXEON M LEDs
offer high real-world efficacy and high
flux density from a uniform source.
• Up to 90 minimum colour rendering
index
• 11.2V, 5.6V and 2.8V package options
• Exceeds ENERGY STAR® lumenmaintenance requirements
EMAIL [email protected] FOR SAMPLES AND DATASHEETS
160433:
For more information
e-mail [email protected]
160434:
For more information
e-mail [email protected]
CIRCUIT
CENTRE
CIRCUIT
AC-DC converter consumes Compact connector system fits in
openings just 8mm in diameter
‘zero’ power in idle mode
POWER
SUPPLY
STMICROELECTRONICS
The new STMicroelectronics’ VIPer0P is an offline AC-DC
converter, which consumes just 4mW at 230V AC in idle mode
thanks to its embedded Zero-Power Mode (ZPM) function. This
is rounded to zero according to the IEC 62301 standard for
home appliances.
The VIPer0P IC integrates a PWM controller and an 800V avalancherugged power MOSFET, giving designers a high safety margin for
superior reliability. It may be configured as a flyback, buck or buck-boost
switched-mode power supply. A flyback converter with a negative
output voltage may be designed easily since it offers an externally
available error amplifier ground.
FREE
BOARDS
Non-isolated converter evaluation boards for the
VIPer0P.
Orderable Part Numbers:
STEVAL-ISA174V1: 7W dual-output (+7V/-5V)
flyback
STEVAL-ISA179V1: 2.25W (5V/0.15A) buck
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
POWER
SUPPLY
TE CONNECTIVITY
The NECTOR S Line, a series of power-to-luminaire
connectors from TE Connectivity (TE), meets the lighting
industry’s need for interconnections which are both
compact and easy to install.
Unlike competing connectors which require much larger openings, this
7.5mm connector can easily fit in an 8mm opening. The NECTOR S Line
connector is ideal for applications in which a power connection and
coupling between lamps is needed. It is suitable for use in the wiring for
lighting in furniture, offices, kitchens, bathrooms, display cabinets, and
mountable lighting fixtures.
• Two- and four-pole
connectors
• Standard cable
assemblies available
• 250V AC, 125V AC and
42V DC ratings
• Current-mode jittered
PWM controller
• Embedded high-voltage
start-up and sense FET
• Over-current and
overload protections and
thermal shut-down
NECTOR, TE Connectivity and TE Connectivity
(logo) are trademarks.
160435:
160437:
For more information
e-mail [email protected]
For more information
e-mail [email protected]
Compact optocouplers
suitable for isolating DALI
interfaces
OPTO
FAIRCHILD SEMICONDUCTOR
The HMHA281 and HMHA2801 are optocouplers consisting of
a gallium arsenide (GaN) infra-red LED driving a silicon phototransistor, housed in a compact four-pin mini-flat package.
The half-pitch leads, of just 1.27mm, help
designers to save space in their board layout.
The maximum stand-off height is just 2.4mm.
The devices are ideal for use in the
isolation of the interface between a smart
light and a Digital Addressable Lighting
Interface (DALI) network.
• Withstands 3,750V AC for one minute in
accordance with UL1577
• 565V peak working insulation voltage in
accordance with DIN-EN/IEC 60747-5-5
Part Number
MCU
NXP SEMICONDUCTORS
The LPC1758 from NXP Semiconductors is an ARM®
Cortex®-M3-based microcontroller combining a fast
processor with multiple interfaces to provide control
functions for an LED lighting system with many sensor and
user inputs.
Operating at a frequency of up to 100MHz, the ARM Cortex-M3 CPU
incorporates a three-stage pipeline, and uses a Harvard architecture with
separate local instruction and data buses as well as a third bus for
peripherals.
The rich set of peripherals available to users of the LPC1758 includes
512kbytes of Flash memory, 64kbytes of data memory, USB
Device/Host/OTG interfaces, four UARTs, two CAN channels, various
serial interfaces and a DAC.
• Up to 52 general
purpose I/O pins
• 12-bit ADC
• Ethernet media
access controller
160436:
For more information
e-mail [email protected]
Vishay’s VOM617A and VOM618A are low input-current
optocouplers which have a photo-transistor output.
The input current of the VOM618A is 1mA, and for the VOM617A it is
5mA. The optocouplers are housed in a compact SOP-4 mini-flat
package, which reduces the PCB footprint by 30% compared to the
DIP-4 package in which many optocouplers are supplied.
The devices are available with a range of specifications for current
transfer ratio from 40% to 600%. They feature a GaAs infra-red LED
which is optically coupled to a silicon photo-transistor. They offer a
3,750VRMS isolation-voltage rating.
Current Transfer Ratio
HMHA281
50% to 600%
HMHA2801
80% to 600%
HMHA2801A
80% to 160%
HMHA2801B
130% to 260%
HMHA2801C
200% to 400%
160439:
160441:
For more information
e-mail [email protected]
For more information
e-mail [email protected].com
STMICROELECTRONICS
STMicroelectronics has developed a ready-to-use software
library which makes it easy for users to implement a Digital
Addressable Lighting Interface (DALI) slave on an STM8S 8-bit
microcontroller.
By building DALI slave capability into end nodes such
as smart light bulbs and luminaires, the manufacturer
can make them ready for use in large-scale lightingcontrol networks that use the standard DALI protocol.
STMicroelectronics supplies a simple application
example with its DALI slave library. This example was
designed for use with the STM8S-DISCOVERY, an
evaluation board containing an STM8S105C6T6
MCU, and the STEVAL-ILM001V1, a transceiver
module providing a hardware interface for the STM8SDISCOVERY to a DALI master.
The application example controls the light output of
the LED on the STM8S-DISCOVERY board.
RF module provides easy wireless Single-chip sub-1GHz RF transceiver
achieves link budget of 143dB
links for lighting equipment
ISM
RADIO
RECEIVER
STMICROELECTRONICS
STMicroelectronics has introduced a series of easy-to-use,
low-power modules based on the SPIRIT1 RF transceiver.
The SPSGRF-868 operates in the 868MHz Short-Range Devices (SRD)
band, and the SPSGRF-915 in the 915MHz ISM band. The modules,
which provide a complete RF platform for wireless communication
between luminaires and control units, are housed in a tiny 13.5mm x
11.5mm x 2mm package.
As well as the SPIRIT1 transceiver, the SPSGRF modules include an
antenna, balun and filter, RF tuning network, power-supply filter and
50MHz crystal.
• Certifications:
SPSGRF-915: FCC & IC
SPSGRF-868: CE0051
• 9.7mA Receive current
• 21mA Transmit power
at 11dBm
ISM
RADIO
RECEIVER
ON SEMICONDUCTOR
The AX5043 is a single-chip, ultra low-power RF transceiver
operating at frequencies from 27MHz to 1,050MHz and offering
high sensitivity and selectivity.
Featuring a large link budget of 143dB at a data rate of 1kbit/s, the
AX5043 provides for robust communication in wireless lighting networks
even in conditions that are challenging for radio signals because of
noise, distance or attenuating materials.
An integrated voltage regulation system allows the direct use of
batteries. Because the device has a short start-up time, it enables the
implementation of time- and energy-efficient protocols. The AX5043
supports FSK, MSK, 4-FSK, GFSK, GMSK, AFSK and ASK modulation
schemes.
• 16dBm maximum output
power level
• Constant transmitter output
power over the full 1.8V3.6V supply range
• QFN-28 package
FREE
BOARDS
Orderable Part Number:
STM8S-DISCOVERY
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
160438:
160440:
For more information
e-mail [email protected]
EMAIL [email protected] FOR SAMPLES AND DATASHEETS
160442:
For more information
e-mail [email protected]
SPSGRF modules: complete RF system
18
VISHAY
OPTO
VOM617A: compact PCB footprint
New DALI slave software library
runs on 8-bit STM8S MCU
MCU
Low input-current optocouplers
supplied in miniature package
• UL-recognised
• CSA, VDE, FIMKO
and CQC safety
certifications
NECTOR S Line: TE provides various standard assemblies
Fast ARM Cortex-M3-based
controller offers choice of interfaces
CENTRE
For more information
e-mail [email protected]
AX5043: reliable wireless communication
FOLLOW US NOW – SEARCH FTM BOARD CLUB ON
19
APPLICATION
SPOTLIGHT
–
LIGHTING
Reference design speeds implementation
of new DALI master products
ATMEL
Atmel has produced a reference design
based on its SAM D20/21 series of
microcontrollers for a standardcompliant Digital Addressable Lighting
Interface (DALI) master.
The reference design implements the DALI
control and communications protocol
specified in IEC 62386-101, -102 and
-207, and is compliant with the
standard. The firmware supplied
by Atmel includes application
software, service
software and drivers.
Manchester
encoding is
implemented in
software.
The reference design is
intended to be used in conjunction
with Atmel® Studio 7, the integrated
development platform for developing and
debugging Atmel SMART and AVR® MCU
applications. It provides a seamless and easy-
to-use environment for writing, building and
debugging applications written in C/C++ or in
assembly code. It connects to Atmel
debuggers and development kits.
In addition, Studio 7 includes Atmel Gallery,
an online app store which offers plug-ins
developed by Atmel and by third-party tool
and embedded software vendors.
Users can evaluate the DALI master
reference design on a ready-made
evaluation kit for the SAM
D21, an MCU which uses
the low-power ARM®
Cortex®-M0+
processor
core. The
Atmel SAM
D21 Xplained Pro
evaluation kit is ideal
for evaluating and
prototyping with the Atmel
SAM D21, and its features
can be supplemented with
extension boards which are
available for purchase individually.
The reference design may easily be
ported from the SAM D21 to other Atmel
devices using the Atmel Software Framework.
PWM-dimmable LED driver
integrates boost controller
STMICROELECTRONICS
The LED6001 LED driver from
STMicroelectronics combines a boost
controller and high-side current-sensing
circuitry optimised for driving one string
of high-brightness LEDs.
The device is compatible with multiple DC-DC
converter topologies such as boost, SEPIC and
floating-load buck-boost.
The LED6001 allows for the brightness of
the LEDs’ output to be controlled either by a
PWM dimming signal, or by an analogue
voltage in a 10:1 ratio. In addition, enhanced
PWM dimming can be realised with an external
MOSFET in series with the LED string, which
may be directly driven by a dedicated pin.
The high-side current sensing, in combination
with a P-channel MOSFET, provides effective
protection in case the positive terminal of the
LED string is shorted to ground. The precise
current-sensing circuitry provides for a
reference current accurate to ±4%, helping the
device to achieve very accurate LED current
regulation and brightness over the whole
temperature range and population of production
units.
ENERGY
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
•
•
Building automation
Home automation
FEATURES
•
•
•
•
•
•
•
•
•
•
SAMD21J18A microcontroller
Mechanical reset button
Mechanical user push-button
One yellow user LED
32.768kHz crystal
USB interface
8Mbits serial Flash
Three Xplained Pro extension headers
Embedded debugger
USB-powered
160443:
For samples or pricing e-mail
[email protected]
FREE
BOARDS
The Atmel® SAM D21 Xplained Pro evaluation kit is ideal
for evaluating and prototyping with the Atmel SAM D21
ARM® Cortex®-M0+ based microcontrollers.
Orderable Part Number: ATSAMD21-XPRO
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
ENERGY
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
•
•
•
•
Street lighting
Advertising panels
Signage
Gaming
FEATURES
• Input-voltage range: 5.5V to 36V
• Fixed-frequency peak current-mode
control
Fixed internal soft-start
Thermal shut-down with auto-restart
Up to 60V LED output voltage
Constant-current control loop
Output over-current protection
Protection against failure of sense resistor
•
•
•
•
•
•
160444:
For samples or pricing e-mail
[email protected]
FREE
BOARDS
The STEVAL-ILL049V1 is an adapter board equipped with
a single-channel, constant-current LED driver for several
LEDs arranged in a single string. The LEDs may be
dimmed with a PWM signal or an analogue control voltage.
Orderable Part Number: STEVAL-ILL049V1
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
LED6001 LED driver: accurate current regulation
20
INDUSTRIAL
FOLLOW US NOW – SEARCH FTM BOARD CLUB ON
160445:
For more information e-mail
[email protected]
APPLICATION
SPOTLIGHT
–
LIGHTING
APPLICATION
Standard-fit optics arrays are easy to assemble in
LED lighting products
CARCLO
Carclo supplies the 33Up family of
optics arrays, providing a choice of 32
parts featuring 30°, 60°, 90° and
double asymmetric beam patterns.
The 33Up arrays are compatible with many
suppliers’ standard boards, including Fortimo
boards from Philips and Tridonic boards.
The 33Up array optics combine light weight
with performance suitable for the most
demanding of situations. Ease of assembly
and the flexibility to choose from multiple
product variants make the 33Up family a
practical choice for a wide variety of projects.
The 33Up range offers complete PCB
coverage, creating the illusion of a continuous
optic. A custom light output can be designed
and engineered into the same tooling frame.
The optics also have class-leading low glare,
and offer up to a 90° Full Width Half Maximum
(FWHM) light output.
Manufactured using high-grade PMMA or
polycarbonate materials to produce the best
optical efficiency possible, the 33Up family
offers the option of overlapping ends. These
are suitable for use on high-voltage PCBs.
ENERGY
•
•
•
•
•
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Retail lighting
Industrial lighting
High-bay lighting
Office lighting
FEATURES
Ideal T8/T5 replacement
Board-to-board production tolerances
Allows for thermal expansion
160446:
For samples or pricing e-mail
[email protected]
New family of linear 60W LED drivers provides
dim-to-off function
INVENTRONICS
Inventronics has released a family of linear 60W programmable constant-current LED
drivers for indoor lighting applications.
The LUD-060SxxxDS2 series can be programmed to dim in response to 0-10V, PWM or preprogrammed timer settings. An alternative DALI-compliant version, the LUD-060SxxxBS2, will also
be available. Both series include five constant-power models which provide the full 60W output at
almost any current from 385mA to 2.1A.
Every driver features low ripple for a flicker-free output, and a 5% minimum dimming level. The
drivers also provide a 12V/200mA auxiliary output.
The drivers’ dim-to-off feature has stand-by power consumption of no more than 0.5W,
complying with the latest European regulations. This makes them ideal for operation with sensors
and controls and enables lighting fixtures to benefit from the energy-saving capability of buildingautomation systems.
The high efficiency and robust thermal design of these drivers enable them to run cool,
significantly improving reliability and extending product life.
The lifetime of these drivers is calculated to be
at least 138,000 hours when operating at 80%
load with a case temperature of 60°C.
To ensure trouble-free operation, these drivers
also feature over-voltage and over-temperature
protections for both the driver and the external
LED array, and short-circuit protection.
ENERGY
•
•
•
•
•
•
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
Dimmable six-channel LED
driver sinks up to 85mA per
channel
STMICROELECTRONICS
The ALED7707 from STMicroelectronics
is a six-channel LED driver for use in
interior and exterior automotive lighting
applications.
It consists of a monolithic DC-DC boost
converter and six current generators. The
device can provide an output voltage up to
36V, sufficient to drive ten white LEDs per
channel. The current generators may be
externally programmed to sink up to 85mA per
channel and may be dimmed with a PWM
signal down to a 1% duty cycle at 1kHz. If an
LED string requires a current higher than
85mA, two generators may be connected in
parallel to provide a higher total current.
The device detects and manages open and
short LED faults, and lets unused rows remain
floating. Basic protection functions of output
TE CONNECTIVITY
TE Connectivity’s (TE) two-position
wire-to-wire connector provides a
space-saving means to connect a
power cable to a luminaire in indoor
lighting applications.
•
•
•
•
INDUSTRIAL
LIGHTING
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Automotive interior lighting
Automotive infotainment LCD backlighting
Daytime running lights
Dashboard backlighting
FEATURES
• AEC-Q100 qualified
• Input-voltage range: 4.5V to 36V
• Internal power MOSFET
• Constant-frequency peak current-mode
control
• Adjustable switching-frequency range:
250kHz to 1MHz
• Pulse-skipping power-saving mode at
•
light load
±3% current-matching between rows
160448:
For samples or pricing e-mail
[email protected]
FREE
BOARDS
The STEVAL-ILL067V1 board provides a compact
reference solution for automotive applications containing
LEDs arranged in multiple strings, such as interior lighting.
Orderable Part Number: STEVAL-ILL067V1
Apply now at my-boardclub.com
Fast-track board request code: FTM64A
ALED7707: up to 36V output voltage
The low-profile connector, which is UL/CSA
2459-compliant, helps to eliminate the risk of
electric shock. The plug has the part number
2271180-1. The receptacle is the 2271183-1.
The mated connector is the 2271203-1.
The connector accepts 18 AWG-22 AWG
solid or tin-dipped stranded wires. It provides
for easy, tool-free installation, and a bump
designed into the housing eliminates the risk of
mis-mating.
The connector’s poke-in technology allows for
easy repair. With dual contact surfaces and a
metal stopper, it offers highly reliable operation.
The contacts are fully fixed in the housing and
feature an additional lock bar for assured
retention.
ENERGY
•
•
•
Panel lights
Linear lights
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Indoor lighting
Downlights
Commercial lighting
FEATURES
FEATURES
• 3A maximum current with 18 AWG cable
• 4A maximum current with 22 AWG cable
• 600V AC maximum voltage
• 2,200V AC dielectric strength
• Ambient temperature range:
Input-voltage range: 90V to 305V AC
0.99 power factor at 120V AC
0.96 power factor at 220V AC
UL recognised
ENEC, CE, FCC and CB certifications
IP20-rated metal housing
•
For samples or pricing e-mail
[email protected]
EMAIL [email protected] FOR SAMPLES AND DATASHEETS
-40°C to 105°C
Rated for 10 mating cycles
160449:
TE Connectivity: easy, tool-free installation
22
over-voltage, MOSFET over-current and thermal
shut-down are integrated in the ALED7707.
In addition, the ALED7707 has an LDO
which supplies the internal circuitry of the
device and is capable of providing an output
up to 40mA.
ENERGY
–
Space-saving connector provides reliable power
junction in indoor lighting
APPLICATIONS
160447:
SPOTLIGHT
For samples or pricing e-mail
[email protected]
TE Connectivity and the TE Connectivity logo are trademarks.
VISIT THE ONLINE FTM MAGAZINE AT: WWW.MY-FTM.COM
23
APPLICATION
SPOTLIGHT
–
LIGHTING
Illumination-grade LEDs offer high resistance to
corrosion in chemical environments
LUMILEDS
Lumileds has introduced a new midpower LED which is able to operate
reliably in hot and extremely harsh
chemical environments.
The LUXEON® HR30 LEDs are resistant to
chemicals which are commonly found in high
concentrations, such as chlorine and sulphur.
This makes them suitable for use in
applications such as buildings containing a
swimming pool, in which they offer long
operating lifetime over a wide temperature
range.
The HR30 series is available with a wide
variety of light-output ratings for flexible endproduct development options. These include
Correlated Colour Temperature (CCT) values of
2,700K, 3,000K, 4,000K, 5,000K and 5,700K
and minimum colour-rendering index values of
either 70 or 80. The CCT performance is hottargeted at a junction temperature of 85°C to
reflect typical real-world usage of the LEDs.
The HR30 devices are also available with an
ESD protection level of either 2kV or 8kV.
The strong resistance to chemicals offered by
the HR30 LEDs is due in part to their goldplated lead-frame package and highly
reflective housing made of strong Silicone
Moulding Composite (SMC) material. The
LEDs’ resistance to chemical environments
has been tested in accordance with the IEC
68-2-43 and 68-2-60 standards.
The typical luminous efficacy of the HR30
LEDs is up to 134 lumens/W.
Atmel has introduced a set of tools and
software which offer design engineers a
quick, easy and safe means to develop
wireless lighting-control systems based
on the ZigBee® Light Link profile.
The BitCloud® Software Development Kit (SDK)
provides a comprehensive set of tools,
including full-featured reference applications,
ZigBee PRO stack libraries and user
documentation. Using the SDK, users can
quickly develop wireless products
compliant with the ZigBee Home
Automation profile as well as the
Light Link profile.
The BitCloud SDK provides
a reliable, scalable and
secure wireless solution
which supports large
mesh networks
consisting of hundreds
of devices.
24
•
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Indoor area lighting
Industrial lamps and fixtures
Outdoor lighting for harsh environments
FEATURES
• Tight colour control of production units
• >100,000 hours’ lifetime at 150mA
•
•
•
LUXEON HR30:
highly reflective housing
Complete set of tools helps
accelerate development of ZigBee
Light Link projects
ATMEL
ENERGY
Offering ultra-low power consumption, it can
provide for up to 15 years of battery life.
Applications developed with the BitCloud
SDK may be targeted at Atmel®
microcontrollers that feature a built-in ZigBee
radio. These include the SAM R21 family of
MCUs containing an ARM® Cortex®-M0+
processor core, and the 8-bit ATmega256RFR2
and ATmega2564RFR2 MCUs. Atmel also
supplies the ATmega256RFR2 ZigBit wireless
module, which includes the MCU and an
integrated chip antenna or UFL
connector.
The SAM R21 devices are
supported by the
ATSAMR21ZLL-EK, a
ZigBee Light Link
evaluation kit featuring
the ATSAMR21G18A
microcontroller.
Supported by the Atmel
Studio integrated development
platform, the kit supports antenna
diversity, and features an RGB LED,
QTouch touch-sensing interface, OLED
display, joystick, user LEDs, user switch,
and external USB and UART interfaces.
forward current and 105°C junction
temperature
150°C maximum LED junction
temperature
Operating case-temperature range:
-40°C to 125°C
120° typical viewing angle (full-width halfmaximum)
160450:
ENERGY
•
•
INDUSTRIAL
For samples or pricing e-mail
[email protected]
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Wireless lighting-control systems
Wireless home-automation networks
FEATURES
• Full standards compliance with the
ZigBee PRO certified platform
• Easy-to-use ‘C’ applications
programming interface
• Reliable data transmission benefitting
from true mesh routing
• Flexible, easy-to-use developer tools
• One-source support from ZigBee PRO
stack experts
160451:
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WORKING PARTNER ST’s LED2472G: page 29
FREE
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The Atmel® ATSAMR21ZLL-EK evaluation kit is a
hardware platform to evaluate the ATSAMR21G18A
microcontroller.
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160452:
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APPLICATION
SPOTLIGHT
–
LIGHTING
APPLICATION
500W power supply ideal for demanding architectural
LED lighting systems
SL POWER
SL Power Electronics has introduced
the LU500, a 500W open-frame AC-DC
power supply which is ideal for spaceconstrained LED and architectural
lighting systems that call
for high efficiency and a
wide input-voltage range.
The units feature a universal
mains input range of 90V to
305V AC, and provide a DC
output of 12V, 24V or 48V.
Housed in a 4” x 7.25” x 2.2”
chassis, the LU500’s small
footprint allows it to fit
comfortably into a 2U chassis.
The power supply offers a
500W output when cooled with
a 200 LFM cooling airflow at an
ambient temperature of 50°C, a
higher power rating than any
other product in its class. It also
supports active current sharing
for parallel operation, enabling
users of LU500 units to supply loads of up to
1,000W. Average efficiency is higher than 90%.
The LU500 meets the requirements of the
IEC 61000-3-2 Class C standard, and features
a power factor of greater than 0.9. It also
complies with the CISPR 15 and EN55015
EMC standards.
The power supply also provides full output
protection, including over-temperature sensing
circuits which shut-down the power supply to
protect a light fixture in the event of overheating.
ENERGY
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
•
•
Architectural lighting
Entertainment equipment
FEATURES
•
•
Three-year warranty
500,000 hours’ MTBF at an operating
temperature of 25°C
1.5% total noise in 12V DC unit
1% total noise in 24V and 48V DC units
±5% voltage adjustability from nominal
3,000V AC input-output isolation
•
•
•
•
160453:
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LU500 from SL Power: fits in a 2U chassis
Surge protection modules prevent damage to
outdoor LED lighting fixtures
LITTELFUSE
Littelfuse’s LSP05GX module is a surge
protection device which protects
European outdoor and commercial LED
lighting fixtures from transient overvoltages.
LSP05GX module: parallel- and series-connected options
26
Benefitting from Littelfuse’s thermally-protected
varistor technology, the module features a builtin thermal disconnect function which prevents
catastrophic failure and fire hazards even in the
extreme event of the varistor reaching its end
of life or sustaining an over-voltage.
The LSP05GX also features high line-toearth/ground resistance, which provides for
faster insulation resistance testing on the
production line.
The LSP05GX is available in both
parallel- and series-connected options.
The series-connected option gives a
clear indication of the operation of
thermal fault protection by disconnecting
power to the luminaire, thereby signalling
that the surge protective device needs
to be replaced.
Use of the LSP05G240SX or
LSP05G277SX, connected in parallel
and with an external LED, is approved
by DEKRA for compliance with the
EN/IEC 6163-11 standard.
The LSP05GX also enables
manufacturers to ensure that their
lighting products comply with the
requirements of the IEEE C62.41.2
Location Category C Low standard.
The device is also compatible with the ANSI
C136.2 Enhanced Level specifications.
•
•
•
•
•
•
•
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
Digital signage
Floodlighting
Parking garage lighting
Highway and street lighting
Traffic lighting
Tunnel lighting
Wall-wash lighting
installation, common in Europe
• UL 1449-recognised with 240V AC
For samples or pricing e-mail
[email protected]
LIGHTING
ENERGY
•
•
•
•
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Bulb-replacement lamps up to 15W
AC-DC LED drivers up to 15W
FEATURES
±3% LED current accuracy
Quasi-resonant operation
Automatic self-supply
1mA quiescent current
160455:
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BOARDS
The STEVAL-ILL055V1 board generates a 640mA
nominal output current, delivering up to 11W of output
power from the HVLED815PF offline LED driver.
Orderable Part Number: STEVAL-ILL055V1
Apply now at my-boardclub.com
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Receptacle provides convenient connection between a
photocell and a luminaire
standard for dimmable photocells, the
receptacle is supplied with pre-terminated wire
leads for ease of integration into new or
existing lighting fixtures.
TE CONNECTIVITY
voltage rating
Complies with EN/IEC 61643-11 Class II
160454:
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A primary switcher intended for operation
directly from the rectified mains, the
HVLED815PF combines a high-performance
controller chip and an 800V,
avalanche-rugged power
MOSFET in a single package.
Requiring very few external
components, it provides an
efficient, compact and costeffective solution for driving
LEDs from a mains power
supply.
The current-mode controller
IC implements a zero-voltage
switching flyback conversion
topology, with its constantcurrent regulation supported
by primary-sensing feedback.
This topology provides for
good LED current accuracy
while eliminating the need for
the optocoupler, secondary
FEATURES
MEDICAL
• 10kA maximum surge current
• IP66 rated
• Option for Class II unearthed luminaire
•
STMicroelectronics’ HVLED815PF is an
800V offline LED driver in a single
package which features a power factor
of higher than 0.90.
Ideal for use in outdoor commercial and
utility lighting, the receptacle is available
with either two or four dimming contacts, to
support either 0-10V dimming methods or
the Digital Addressable Lighting Interface
(DALI) protocol. It also offers a reliable
power connection made by three robust
twist-lock contacts.
Conforming to the dimensional
requirements of the ANSI C136.41-2013
LIGHTING
voltage reference and secondary-side current
sensing found in other offline LED drivers.
Moreover, the HVLED815PF guarantees safe
operation when a short-circuit in one or more
LEDs occurs.
The device can also provide constantvoltage regulation: this allows the application to
work safely when the LED string opens due to
a failure. In addition, the device detects a
shorted secondary rectifier, when an LED string
is shorted due to a failure, and transformer
saturation.
STMICROELECTRONICS
APPLICATIONS
INDUSTRIAL
–
Offline 800V LED driver offers high power factor
TE Connectivity’s (TE) ANSI C136.41
dimming receptacle with spring leaf
contacts provides an electrical and
mechanical interconnection
between an ANSI-standard photocontrol cell and a luminaire.
ENERGY
SPOTLIGHT
ENERGY
•
•
•
•
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
Street lighting
Highway lighting
Photo-controlled lighting schemes
Car-park lighting
FEATURES
• Five-position version has three power
contacts and two signal contacts
• Seven-position version has three power
contacts and four signal contacts
• 15A maximum power rating
• 480V maximum voltage rating
TE dimming receptacle: pre-terminated wire leads
Part number (with 150°C wires)
Part number (with 105°C wires)
Five-position Connector
2213362-1
2213362-3
Seven-position Connector
2213362-2
2213362-4
Spring-leaf Brush Contact
2213365-1
–
160456:
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27
APPLICATION
SPOTLIGHT
–
LIGHTING
24-channel LED driver offers error-detection features
STMICROELECTRONICS
The LED2472G from STMicroelectronics
is a 24-bit shift register providing a
constant-current output to 24 channels of
LEDs. It is intended for use in supplying
current to the multiple LED channels in
LED display panels, and particularly in
interior and exterior LED billboards.
A single external resistor is required to
configure the current. All the controls and the
shift-register data are accessible via a serial
interface. A single 24-bit configuration register
is used to choose features and settings to fit
the application.
An LED failure-detection circuit checks three
different conditions which can occur at the
output line: short to ground, short to the power
supply rail, or open channel. The automatic
shut-down and automatic power-on features
allow the device to save power without any
external intervention.
WORKING PARTNER Atmel’s ZigBee Light Link: page 24
The LED2472G provides 20V of output driving
capability, allowing several LEDs to be
connected in series in each channel. The
device is configured in three groups (red, green
and blue) of eight independently-controlled
channels. The LED current can be separately
regulated for each colour within the range from
4mA to 72mA. This range is divided into two
sub-ranges and the current can be adjusted
within each range in 64 steps of resolution
(6 bits per colour).
ENERGY
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
• Full-colour large displays
• LED signage
• Indoor/outdoor LED billboard screens
•
•
•
•
FEATURES
Selectable gradual output delay
Supply-voltage range: 3V to 5.5V
Thermal shut-down at 170°C
Up to 30MHz clock frequency
160458:
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FREE
BOARDS
Orderable Part Number: STEVAL-ILL015V2
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LED2472G: ideal for use in LED billboards
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Europe’s electronics industry thrives on the application of innovation and creativity, and an essential
innovator’s tool in design projects is the development board. The Board Club website is a Future Electronics
resource for users of development boards. Here, and only here, Board Club members can gain access to
exclusive free development boards and development board offers.
If you would like to register for membership, please visit: www.my-boardclub.com/register.php
STMICROELECTRONICS
24-channel LED-driver board enables simulation of shorted
and disconnected LEDs
The STEVAL-ILL015V2 product evaluation board provides a platform for testing
and evaluating the LED2472G 24-channel LED driver from STMicroelectronics.
160457:
For more information
e-mail [email protected]
The LED2472G is a 24-bit constantcurrent LED sink driver with output
error detection, suitable for
applications such as large-area
displays and full-colour display
panels. Use of the LED2472G in
these applications gives designers
the potential to improve the
resolution of the output of Red,
Green, Blue (RGB) LED arrays and to
reduce system cost.
STEVAL-ILL015V2 board: includes LED driver, 32-bit MCU and DC-DC power supply
The board includes two
LED2472G devices connected to three
sets of 16 RGB high-brightness LEDs.
It also features an STM32 32-bit microcontroller
FREE
BOARDS
and an internal high-side oscillator. The board
is backed by the STSW-ILL015V2 PC-based
Orderable Part Number: STEVAL-ILL015V2
graphical user interface for configuring and
controlling the operation of the system.
Apply now at my-boardclub.com
The board is provided with the highly efficient
Fast-track
board request code: FTM64A
ST1S010 DC-DC switching power supply.
ENERGY
INDUSTRIAL
LIGHTING
MEDICAL
AUTOMOTIVE SECURITY
CONSUMER TELECOMMS
APPLICATIONS
• Full-colour large displays
• LED signage
• LED screens for indoor and outdoor
billboards
FEATURES
• JTAG interface for microcontroller
firmware changes and updates
• Mini-USB connector for PC connection
• User control buttons and knob
• Error and over-temperature flag for each
LED driver
• Three jumpers to simulate the
disconnection of three LEDs
• Three jumpers to simulate the shorting of
three LEDs
• Input-voltage range: 7.5V to 18V
160459:
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[email protected]
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29
TECHNICAL
TECHNICAL
VIEW
VIEW
Wide-area network coverage in licence-free bandwidth: how to benefit from a new generation of low-power WAN technologies
By Future Connectivity Solutions
The options for implementing wireless connectivity in sensor
networks and other Internet of Things (IoT) applications are
becoming markedly more attractive.
For some ten years or more, mobile phone (cellular) networks
have been the only universal wireless communications
technology available to makers and operators of Machine-toMachine (M2M) communications equipment, guaranteeing
close to 100% coverage of almost every inhabited region of
the planet. For M2M applications, the venerable GPRS (2G)
technology has been the entry-level choice of mobile phone
network; the newer 3G and 4G technologies offer progressively
higher data rates, at a higher connection cost.
All of these mobile phone technologies, however, have serious drawbacks
for M2M users: the data rate is far higher than required by most M2M
applications, and as a result the cellular modules for embedding inside
IoT equipment are over-specified, and too costly, for many applications.
In addition, the high charges that the mobile network operators levy to
connect even the simplest of wireless devices reflect the high data rate
that the network can support.
What is more, the technology tends to perform poorly when used in
harsh or extreme environments. In short, for most M2M applications, using
a mobile phone network for universal wireless coverage is expensive.
Soon, however, many users will have the choice of two new wide-area
network technologies, both of which offer dramatic cost savings
compared to the mobile phone networks. This article compares these
two newcomers to the M2M scene.
Low power and wide area coverage
Both the new networks fall into a new category of universal network
called public Low-Power Wide-Area Network (LPWAN). The name
appears paradoxical: conventional approaches to wireless connectivity
would suggest that a network device ought not to be able to operate at
low power levels while at the same time transmitting over a wide area.
Interestingly, the topology of the two new network types is exactly the
same as that of the cellular phone technologies: their star topology also
has a Base Transceiver Station (BTS) at its centre. But unlike 2G, 3G or
4G systems, an LPWAN uses a modulation scheme that sacrifices data
throughput in order to gain greater tolerance of interference and
attenuation of the signal. This enables the Transmit (output) power to be
extremely low. At the same time, the technology calls for receivers with
very high sensitivity, in order to maintain a connection with relatively weak
incoming signals.
In other words, unlike a mobile phone network, an LPWAN is
optimised for the low-power, low data-rate requirements of M2M and IoT
applications. The result is that an LPWAN cell can offer broad coverage,
potentially even bigger than a mobile phone cell, while using less power.
First steps towards public network roll-out
Both new public LPWAN technologies operate at frequencies in the ISM
licence-free bands. Unlike mobile phone network operators, therefore,
LPWAN operators do not need to buy expensive licenced radio spectrum.
Nevertheless, there is a considerable cost to creating a public wireless
infrastructure, and inevitably it has taken time to reach a level of
coverage at which new public LPWANs could satisfy more than a niche
set of users. Now, however, the two LPWAN technologies have become
viable options for OEMs and users.
SIGFOX™ is one; LoRa™, an LPWAN technology developed by
semiconductor manufacturer Semtech, is the other.
Operation of SIGFOX public networks
A SIGFOX public network covers France, Spain, the UK and the
Netherlands; beginning in 2015, several field trials were taking place in
cities around the world, and nationwide network deployment was starting
in Portugal, Denmark, Belgium and the US, as shown in Figure 1.
30
READ THIS ARTICLE TO FIND OUT ABOUT
• The emergence of alternatives to expensive, complex cellular
communications modules for wide-area coverage
• The differences in network implementation between the SIGFOX
and LoRa technologies
• Off-the-shelf components and modules available today for OEMs
that wish to build SIGFOX or LoRa master or slave nodes
SIGFOX plans to
have national
coverage in more
than 60 countries
by 2020.
In France,
SIGFOX owns and
operates the
network, develops
the local ecosystem
and sells
communication
Fig. 1: SIGFOX global coverage as of July 2015
subscriptions to the
market. In other
countries these activities are the responsibility of SIGFOX Network
Operator (SNO) partners.
An OEM which wishes to join the SIGFOX public network just needs a
client module that runs the SIGFOX client stack, and an 868MHz radio
transceiver that can perform Differential Binary Phase-Shift Keying
(DBPSK) modulation for the uplink and Gaussian Frequency Shift Keying
(GFSK) for the downlink. Some OEMs will develop their own design or
module, but many will buy a ready-made SIGFOX Ready™ certified
module.
The gateways and all the networking and application software for
transporting the data are provided by SIGFOX to ensure the same
quality experience whichever country the objects are communicating in.
According to SIGFOX, open-area range for transmissions can be longer
than 15km, allowing a network with universal coverage to be created
with a relatively small number of cells. Multiple basestations can receive
and relay the same message; this native reception diversity combined
with the ultra-narrowband signals’ rejection of interference help to make
transmissions highly robust.
Close channel spacing in the uplink requires high selectivity at the
basestation. This is provided by cognitive software-defined radio
receivers. The effect is to limit the complexity required in the end
device’s modem, helping to keep OEMs’ implementation costs low.
SIGFOX does not use a proprietary modulation scheme, so
independent semiconductor and module manufacturers can make
transmitters and transceivers which conform to the SIGFOX
specification. Atmel, for instance, already supplies the ATA8520 family of
SIGFOX-compliant products.
Atmel has also announced the introduction of a fully integrated
SIGFOX RF transceiver.
SIGFOX: performance, costs and limitations
In the SIGFOX system, the number of transmissions per day is limited to
140 uplink messages, each of up to 12 bytes, and only four downlink
messages of up to 8 bytes. Latency is in the range 3-5ms. This makes
SIGFOX suitable for applications that transmit small packets relatively
infrequently, with long periods in a power-down state to preserve battery
life. Utility meters are a good example of the kind of application that the
SIGFOX network supports well.
SIGFOX users only pay an annual subscription fee for each node, for
provision of network communication service. The annual fee is
determined by the network operators in each country, but SIGFOX
claims that in all cases, users will benefit from ‘groundbreaking prices
[and] extremely low power consumption’.
EMAIL [email protected] FOR SAMPLES AND DATASHEETS
Implementing a LoRa wide-area network
The route to the development of a universal Long Range (LoRa™) network
has been different from that of SIGFOX.
Based on the Chirp Spread Spectrum (CSS) technique, LoRa is able
to vary the length of the so-called ‘spreading factor’ (between 6 and 12
bits) and the bandwidth to match the bit rate required, in a range from
20bits/s up to 41kbits/s. The LoRa technology is extremely good,
providing a breakthrough in both range and power consumption. LoRa
is a completely asynchronous digital modulation scheme.
Unlike SIGFOX, LoRa technology is fully intended for use in private
networks, as well as public networks. In addition, the high performance
of the LoRa technology is proven by its ability to receive signals as much
as -22dB below the noise floor, coupled with adjacent-channel rejection
of at least 69dB with a 25kHz offset – some 30dB better than when
using FSK modulation at 868MHz on the same transceivers.
At one time, ISM-band radios for industrial applications and operating
at frequencies below 1GHz were typically limited to an open-field range
of up to 2km. Semtech introduced LoRa transceiver ICs to provide
industrial users, operating closed private networks, with a much longer
range of up to 15km between a node and gateway.
The core of the RF implementation offering such performance is
provided by the Semtech SX1272 transceiver, which supports a
frequency range of 860-1,020MHz, and the SX1276 with a wider range
of 137-1,020MHz. Sensitivity reaches a peak of -148dBm in the SX1276.
Whether public or private, a LoRa network calls for a concentrator at
the centre of a star topology. Communication is bi-directional (halfduplex) natively.
The number of nodes connected to a concentrator depends on the
application, and specifically the number of packets that are to be
transmitted in a given period of time. For applications with very high
numbers of end nodes, Semtech has developed a solution for the
concentrator: the highly efficient Semtech SX1301 baseband chipset
and two Semtech SX1257 I/Q modulators. A concentrator built around
these Semtech chips will handle as many as 10,000 nodes.
LoRa in public LPWANs
Recently, Semtech has worked with partners including IBM and Actility
to develop a protocol stack for large-scale networks based on its
technology, called
LoRa_WAN. It is
comprised of a
client, a server
and packet
forwarder
firmware, as
shown in Figure 2.
The introduction
of LoRa_WAN is
expected to
facilitate the
Fig. 2: Architecture of a LoRa_WAN network connected to the cloud
introduction of
many large-scale
private and public LoRa networks in the coming months and years. The
roll-out of LoRa networks is supported by the foundation of the LoRa
Alliance in December 2014. The alliance includes:
• Various end-node module manufacturers, including Semtech, IMST,
Microchip, MultiTech, Link Labs and Embit
• Concentrator manufacturers using the SX1301, including IMST,
Kerlink, MultiTech and Embit
• Various network infrastructure operators
• IBM and Actility, providers of cloud servers running on the
LoRa_WAN_Server software
The combination of the alliance and the LoRa_WAN protocol stack
provide an ecosystem that network operators, including existing mobile
network operators, can draw on to accelerate and lower the cost of
LoRa public network deployments.
The existence of concentrator modules from suppliers such as Kerlink,
Embit, IMST and MultiTech means that the hardware for a LoRa BTS
can be very rapidly developed. When supplied by Future Electronics, the
concentrator may be shipped with pre-loaded IBM or Actility software.
For users which intend to connect devices over a private network, rather
than relying on the existence of a public LoRa network with the required
coverage, this software makes network implementation far quicker and
easier than it would otherwise be.
It is worth noting that this private network capability is not available to
users of the SIGFOX technology.
A minimum of 15km open-field range between concentrator and node
allows for the creation of large cells to quickly achieve wide-area
coverage.
All communications over the LoRa_WAN are secured with AES 128-bit
encryption, as shown in Figure 3. In addition, the LoRa_WAN protocol
stack manages both the adaptive data-rate and adaptive output-power
capabilities of the LoRa technology, for optimisation of power
consumption and signal strength.
This means that a public network implemented with the ready-made
LoRa_WAN stack
can offer users all
the benefits of
low power
consumption, low
cost and high
security provided
by the LoRa
technology.
There have
already been
important
Fig. 3: Encryption and authentication are integral functions of the
examples of
LoRa_WAN architecture
service providers
adopting LoRa.
Orange, one of the largest mobile network operators in the world,
selected the LoRa RF technology for an LPWAN scheduled for
deployment in metropolitan France. Orange will use the network for
‘smart city’ applications in cities across France.
Using the new options for LPWAN deployment
As Table 1 shows, the two new LPWAN technologies have some
differences as well as many similarities. Users who require low-cost,
wide-area wireless coverage for end nodes running for years on a small
battery were badly hampered by the high network charges and high
Transmit power levels of cellular (mobile phone) modem chipsets.
LoRa and SIGFOX in different ways offer industrial users a clear
means to save both power and cost in M2M and IoT applications. But
new products and networks using the LoRa and SIGFOX technologies
are constantly emerging, and so it will often be helpful for industrialequipment OEMs and others to take advice from experts in the field of
M2M wireless networks, such as the specialists at the Future
Connectivity Solutions division of Future Electronics, before deciding on
the best way to implement LPWAN technology for their application.
LoRa™
SIGFOX
Data
Rate
Maximum
Sensitivity in
Currently
Available
Hardware
Maximum
Output
Power
Public/
Private
Network
20bits/s to
41kbits/s
-148dBm
Up to 20dBm
Private or
public
Uplink:
100bits/s
-132dBm @
600bits/s
Downlink:
600bits/s
-142 dBm @
100bits/s
14dBm (EU)
23dBm (US)
Public-only
Number of
Messages per Day
Public network:
dependent on contract
with operator
Private network: no limit
140 uplink,
4 downlink
Table 1: Comparison of the features of LoRa and SIGFOX
160460:
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31
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