UM10847 - NXP Semiconductors

UM10847 - NXP Semiconductors
UM10847
SSL5236DB1249 230 V/4 W non-isolated buck-boost
candle-form dimmable LED driver dual demo board
Rev. 1 — 13 February 2015
User manual
Document information
Info
Content
Keywords
SSL5236DB1249, SSL5236TE, non-isolated buck-boost topology, LED
driver controller, internal MOSFET switch, dimmable candle-form
applications, HSO8 package
Abstract
This user manual describes the performance, technical data, and the
connection of the SSL5236DB1249 dual demo board. The demo board
uses non-isolated buck-boost topology.
This SSL5236DB1249 dual demo board is designed for dimmable
candle-form applications. It operates at 230 V (AC) with an input power of
4 W and an output voltage of approximately 90 V.
UM10847
NXP Semiconductors
SSL5236DB1249 230 V/4 W LED driver demo board
Revision history
Rev
Date
Description
v.1
20150213
first issue
Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
UM10847
User manual
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Rev. 1 — 13 February 2015
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SSL5236DB1249 230 V/4 W LED driver demo board
1. Introduction
WARNING
Lethal voltage and fire ignition hazard
The non-insulated high voltages that are present when operating this product, constitute a
risk of electric shock, personal injury, death and/or ignition of fire.
This product is intended for evaluation purposes only. It shall be operated in a designated test
area by personnel qualified according to local requirements and labor laws to work with
non-insulated mains voltages and high-voltage circuits. This product shall never be operated
unattended.
This user manual describes the operation of the SSL5236DB1249 demo board. The
SSL5236DB1249 demo board features the controller circuit SSL5236TE with an
integrated MOSFET switch. The board operates in a 230 V/4 W non-isolated buck-boost
dimmable LED driver application. The SSL5236TE is mounted in an HSO8 package with
an exposed die-pad, which must be soldered to the floating ground plane of the board to
improve thermal behavior.
The SSL5236DB1249 single demo board is designed for driving LED loads with 90 V
nominal voltage and 4 W input power.
The PCB dimensions are compatible with candle-form applications.
The SSL5236DB1249 demo board provides a simple, cost-effective, and highly efficient
solution for Solid-State Lighting (SSL) applications.
1.1 Features
•
•
•
•
•
•
•
•
•
•
•
•
UM10847
User manual
Candle-form applications
Integrated MOSFET switch
Supports most available dimming solutions
Deep dimming level
Flicker-free dimming
Open/short LED string protection
OverCurrent Protection (OCP)
OverTemperature Protection (OTP)
Power Factor (PF) > 0.86
Efficiency > 75 % at 230 V (AC) input
Compliant with IEC61000-3-2 harmonic standard
Compliant with EN55015 conducted EMI
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Rev. 1 — 13 February 2015
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SSL5236DB1249 230 V/4 W LED driver demo board
2. Safety warning
The demo board input is connected to the 230 V (AC) mains voltage. Avoid touching the
board while it is connected to the mains voltage and when it is in operation. An isolated
housing is obligatory when used in uncontrolled, non-laboratory environments. Galvanic
isolation from the mains phase using a fixed or variable transformer is always
recommended. Figure 1 shows the symbols on how to recognize these devices.
019aab174
019aab173
a. Isolated
Fig 1.
b. Not isolated
Isolation symbols
3. Specifications
Table 1 lists the specification of the SSL5236DB1249 demo board.
Table 1.
UM10847
User manual
SSL5236DB1249 specifications
Symbol
Parameter
Value
Vmains
AC mains supply voltage
230 V; 10 %
Pin
input power
4W
VLED
LED output voltage
90 V
ILED
LED output current
 37 mA
ILED(ripple)
LED output current ripple
25 % (100 Hz)
ILED/Vmains
line regulation
 3 % at Vmains = 230 V; 10 %
ILED/VLED
load regulation
5 % at VLED; 15 % to +7.7 %

efficiency
75 %; at 230 V (AC)/50 Hz
PF
power factor
> 0.86; at 230 V (AC)/50 Hz
Toper
operating temperature
40 C to +105 C
-
board dimensions
60 mm  40 mm
-
conducted ElectroMagnetic
Interference (EMI)
EN55015
-
IEC61000-3-2
class D (for Pin < 25 W limit)
-
dimmer compatibility (stable
light output above on/off point)
80 % dimmer compatibility for
 2 lamps/dimmer
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 13 February 2015
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NXP Semiconductors
SSL5236DB1249 230 V/4 W LED driver demo board
4. Board photographs
Figure 2 shows the top view and bottom view of the SSL5236DB1249 demo board. The
board has been designed as a dual board. For dimmer tests, it is assumed that at least
two lamps of 4 W are connected to one dimmer. However, the board can also be tested
separately by removing the blue jumpers which can be seen in Figure 2(a). At the left
connector of the board (Figure 2(a)), the AC mains (230 V) must be added. At the right
connector, the LED load (90 V) must be connected. The inner part of the board can be
taken out. It has a diameter of 28 mm which fits in a candle lamp.
a. Top view
Fig 2.
b. Bottom view
SSL5236DB1249 dual demo board photographs
UM10847
User manual
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Rev. 1 — 13 February 2015
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SSL5236DB1249 230 V/4 W LED driver demo board
5. Functional description
5.1 Input filtering
Capacitors C1 and C2 and inductor L1 (see Figure 10) filter the switching current from the
buck-boost converter to the mains AC. Capacitors C1 and C2 also provide a
low-impedance path for the converter output switching current.
The input series resistance of 660  and capacitor C1 provide adequate protection
against transient surge voltages.
5.2 Efficiency improvement for universal mains
Resistors R3 and R4 provide the supply current for the SSL5236DB1249 demo board.
The IC draws an additional start-up current (ICC(startup)) just before VCC reaches the
start-up voltage level (Vstartup). The supply current in operation is therefore lower than
during start-up conditions, preventing lamp flicker when the mains voltage is increased or
decreased slowly. This mechanism also increases the dimming performance.
Figure 3 shows the basic behavior.
9VWDUWXS
9GHOWD9&&
9&&
O&&VWDUWXS
O&&RSHU
,&&
9*$7(
DDD
Fig 3.
Start-up current waveform
5.3 Output open and output short protection
The driver board is protected when the LED load is accidentally left open. When the LED
load is accidentally left open, the output voltage increases. When the OverVoltage
Protection (OVP) level is reached on the DEMOVP pin, the OVP protection is triggered.
OVP is a non-latched protection. It recovers when the LED string is reconnected.
Resistors R8, R9, and R10 determine the OVP level. The voltage rating of output
capacitor C7 must be higher than the DC level occurring when the LED load is
accidentally left open.
The measured OVP level is about 100 V.
UM10847
User manual
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SSL5236DB1249 230 V/4 W LED driver demo board
When the LED driver output of the board is shorted, the maximum ISNS voltage
(VI(ISNS)max) limits the primary converter current. The converter frequency drops to its
absolute minimum. This mode is very safe. The input power is very limited.
5.4 ElectroMagnetic Interference (EMI) precautions
For optimal EMI performance, the way of mounting of L1, L2 are important. Make sure
that:
• For buck-boost inductor L2:
The start of winding, which is the wire closest to the core (marked with dot on coil and
schematic), must be connected to the switching side of the converter, in this case
ground of SSL5236TE. The outer part of the winding acts as a shield for the inner part
of the winding.
• For filter inductor L1:
The start of the winding, which is wire closest to the core (marked with dot on
schematic and with the shortest connection lead-on coil), must be connected to the
bridge rectifier. The outer part of the winding acts as a shield for the inner part of the
winding.
Figure 2(a) shows the orientation of the coils.
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User manual
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Rev. 1 — 13 February 2015
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SSL5236DB1249 230 V/4 W LED driver demo board
6. Performance
During performance tests:
• Vmains = 230 V (AC) with a 20 % margin
• Tamb = 25 C typical
• VLED = 90 V unless otherwise specified
6.1 Efficiency
DDD
Ș
Fig 4.
9PDLQV9
Efficiency as a function of Vmains
6.2 Power factor
DDD
3)
Fig 5.
UM10847
User manual
9PDLQV9
Power factor as a function of Vmains
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Rev. 1 — 13 February 2015
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UM10847
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SSL5236DB1249 230 V/4 W LED driver demo board
6.3 Line regulation
DDD
,/('
P$
Fig 6.
9PDLQV9
Line regulation
6.4 Load regulation
DDD
,/('
P$
Fig 7.
UM10847
User manual
9/('9
Load regulation
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Rev. 1 — 13 February 2015
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UM10847
NXP Semiconductors
SSL5236DB1249 230 V/4 W LED driver demo board
6.5 Output ripple
DDD
ULSSOH
Fig 8.
9PDLQV9
Output ripple as a function of Vmains
6.6 ElectroMagnetic Interference (EMI)
Figure 9 shows the conducted EMI result of the SSL5236DB1249 demo board.
Fig 9.
UM10847
User manual
Conducted EMI
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NXP Semiconductors
UM10847
User manual
7. Schematic
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Fig 10. SSL5236DB1249 demo board schematic diagram
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UM10847
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© NXP Semiconductors N.V. 2015. All rights reserved.
5
Nȍ
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SSL5236DB1249 230 V/4 W LED driver demo board
Rev. 1 — 13 February 2015
All information provided in this document is subject to legal disclaimers.
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9
UM10847
NXP Semiconductors
SSL5236DB1249 230 V/4 W LED driver demo board
8. Bill Of Materials (BOM)
Table 2.
Reference
SSL5236DB1249 bill of materials
Description and values
Part number
Manufacturer
BD1
bridge rectifier; 1000 V; 500 mA
MD5S
Rectron
C1; C2
capacitor; 47 nF; 5 %; 400 V; PET; THT
CL21-400V-0.047µF/K
AIDI
C3
capacitor; 2.2 F; 10 %; 6.3 V; X7R; 0603 C1608X7R0J225K080AB
TDK
C4
capacitor; 2.2 F; 10 %; 50 V; X7R; 0805
C2012X7R1H225K125AC
TDK
C6
capacitor; 47 nF; 10 %; 50 V; X7R; 0603
-
-
C7
capacitor; 68 F; 20 %; 100 V; ALU; THT
100ZLJ68M8X20
Rubycon
C8
capacitor; 47 pF; 10 %; 500 V; X7R; 0805 C0805C470KCRACTU
KEMET
D1
diode; 600 V; 1 A
Fairchild
ES1J
D2
diode; 100 V; 215 mA
BAV99
NXP Semiconductors
L1
inductor; 3.3 mH; 100 mA
22R335C
Murata
L2
Inductor; 4.7 mH; 160 mA
744731472
Würth Elektronik
R1; R2
resistor; 330 ; 5 %; 2 W; MFP2
MFP2-330RJI
Welwyn Components
R3; R4
resistor; 750 k; 1 %; 250 mW; 1206
-
-
R5
resistor; 22 ; 1 %; 63 mW; 0603
-
-
R6
resistor; not mounted; 910 k; 1 %;
63 mW; 0603
-
-
R7
resistor; 8.2 k; 1 %; 250 mW; 1206
-
-
R8
resistor; 5.6 k; 1 %; 63 mW; 0603
-
-
R9
resistor; 150 k; 1 %; 250 mW; 1206
-
-
R10
resistor; 160 k; 1 %; 250 mW; 1206
-
-
R11
resistor; 150 k; 1 %; 63 mW; 0603
-
-
R12; R13
resistor; 180 k; 1 %; 250 mW; 1206
-
-
RV1
resistor; VDR; 275 V; 36 J
-
-
U1
DIM0MCM; SSL5236TE
SSL5236TE
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User manual
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SSL5236DB1249 230 V/4 W LED driver demo board
9. Board layout
a. Top view
b. Bottom view
Fig 11. SSL5236DB1249 demo board layout
a. Top view
b. Bottom view
Fig 12. SSL5236DB1249 demo board component placement
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User manual
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10. Abbreviations
Table 3.
Abbreviations
Acronym
Description
EMI
ElectroMagnetic Interference
LED
Light-Emitting Diode
OCP
OverCurrent Protection
OTP
OverTemperature Protection
PF
Power Factor
SSL
Solid-State Lighting
11. References
[1]
UM10847
User manual
SSL5236TE data sheet — Compact high power factor dimmable LED driver IC
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12. Legal information
12.1 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
NXP Semiconductors does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using NXP
Semiconductors products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). NXP does not accept any liability in this respect.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
12.2 Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, NXP Semiconductors does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information. NXP Semiconductors takes no
responsibility for the content in this document if provided by an information
source outside of NXP Semiconductors.
In no event shall NXP Semiconductors be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of NXP Semiconductors.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors and its suppliers accept no liability for
inclusion and/or use of NXP Semiconductors products in such equipment or
applications and therefore such inclusion and/or use is at the customer’s own
risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using NXP Semiconductors products, and NXP Semiconductors
accepts no liability for any assistance with applications or customer product
design. It is customer’s sole responsibility to determine whether the NXP
Semiconductors product is suitable and fit for the customer’s applications and
products planned, as well as for the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
Evaluation products — This product is provided on an “as is” and “with all
faults” basis for evaluation purposes only. NXP Semiconductors, its affiliates
and their suppliers expressly disclaim all warranties, whether express, implied
or statutory, including but not limited to the implied warranties of
non-infringement, merchantability and fitness for a particular purpose. The
entire risk as to the quality, or arising out of the use or performance, of this
product remains with customer.
In no event shall NXP Semiconductors, its affiliates or their suppliers be liable
to customer for any special, indirect, consequential, punitive or incidental
damages (including without limitation damages for loss of business, business
interruption, loss of use, loss of data or information, and the like) arising out
the use of or inability to use the product, whether or not based on tort
(including negligence), strict liability, breach of contract, breach of warranty or
any other theory, even if advised of the possibility of such damages.
Notwithstanding any damages that customer might incur for any reason
whatsoever (including without limitation, all damages referenced above and
all direct or general damages), the entire liability of NXP Semiconductors, its
affiliates and their suppliers and customer’s exclusive remedy for all of the
foregoing shall be limited to actual damages incurred by customer based on
reasonable reliance up to the greater of the amount actually paid by customer
for the product or five dollars (US$5.00). The foregoing limitations, exclusions
and disclaimers shall apply to the maximum extent permitted by applicable
law, even if any remedy fails of its essential purpose.
Safety of high-voltage evaluation products — The non-insulated high
voltages that are present when operating this product, constitute a risk of
electric shock, personal injury, death and/or ignition of fire. This product is
intended for evaluation purposes only. It shall be operated in a designated
test area by personnel that is qualified according to local requirements and
labor laws to work with non-insulated mains voltages and high-voltage
circuits.
The product does not comply with IEC 60950 based national or regional
safety standards. NXP Semiconductors does not accept any liability for
damages incurred due to inappropriate use of this product or related to
non-insulated high voltages. Any use of this product is at customer’s own risk
and liability. The customer shall fully indemnify and hold harmless NXP
Semiconductors from any liability, damages and claims resulting from the use
of the product.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
12.3 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
GreenChip — is a trademark of NXP Semiconductors N.V.
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13. Contents
1
1.1
2
3
4
5
5.1
5.2
5.3
5.4
6
6.1
6.2
6.3
6.4
6.5
6.6
7
8
9
10
11
12
12.1
12.2
12.3
13
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety warning . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Board photographs . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . 6
Input filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Efficiency improvement for universal mains . . . 6
Output open and output short protection . . . . . 6
ElectroMagnetic Interference (EMI)
precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power factor . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Line regulation . . . . . . . . . . . . . . . . . . . . . . . . . 9
Load regulation . . . . . . . . . . . . . . . . . . . . . . . . . 9
Output ripple . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ElectroMagnetic Interference (EMI) . . . . . . . . 10
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Bill Of Materials (BOM) . . . . . . . . . . . . . . . . . . 12
Board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 14
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP Semiconductors N.V. 2015.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 13 February 2015
Document identifier: UM10847
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