Hall effect technology is
reaching new limits !
Webcast ver.1.2 / 5.05.2017
Fluxgate performance with Hall technology, brings the next level
of cost competitiveness
LXS, LXSR, LES, LESR, LKSR, LPSR / Product description
Features
• Based on LEM’s patented high-performance Hall
ASIC for closed loop transducers
• Multi-range 1.5 – 50A IPN Nominal
• Footprint compatible with former LEM Hall and
Fluxgate families: LTS, LTSR, CAS, CASR, CKSR
• 22 models with various options: Reference,
Footprint, Aperture and/or integrated primary
conductor, OCD output (LPSR model)
• Down to 4 ppm/K offset drift
Key dates
• Sample kits: May 2017
• SOP: June 2017
Compatibility with existing LEM families
LES 6-NP, 15-NP, 25-NP, 50-NP
Product description
Features:
• IPN = 6, 15, 25, 50 ARMS
• Closed loop multi-range current transducer
• Voltage output
• Unipolar supply voltage
• Compact design for PCB mounting
• Very low offset drift
• CAS footprint compatible
• Operating temperature range -40 to +105°C
Same accuracy as CAS, pin-pin compatible
• CAS LES
• CAS series will not be phased-out
Fluxgate performance with a Hall ASIC.
Datasheet available May 16th
Product name
LES 6-NP
LES 15-NP
LES 25-NP
LES 50-NP
Vcc (V)
5
5
5
5
Meas. Range (A)
±20
±51
±85
±150
Vout type
Fixed Vref
Fixed Vref
Fixed Vref
Fixed Vref
Package
PCB mounted
PCB mounted
PCB mounted
PCB mounted
LESR 6-NP, 15-NP, 25-NP, 50-NP
Fluxgate performance with a Hall ASIC.
Product description
Features:
• IPN = 6, 15, 25, 50 ARMS
• Closed loop multi-range current transducer
Datasheet available May 16th
• Voltage output
• Unipolar supply voltage
Product name Vcc (V) Meas. Range (A) Vout type
Package
• Compact design for PCB mounting
LESR 6-NP
5
±20
Fixed Vref
PCB mounted
LESR
15-NP
5
±51
Fixed
Vref
PCB mounted
• Very low offset drift
LESR 25-NP
5
±85
Fixed Vref
PCB mounted
5
±150
Fixed Vref
PCB mounted
• Reference access OUT & IN (0.5 to 2.75 V) LESR 50-NP
• CASR footprint compatible
• Extended measuring range for unipolar measurement
• Operating temperature range -40 to +105°C
Same accuracy as CASR, pin-pin compatible
• CASR LESR
• CASR series will not be phased-out
LKSR 6-NP, 15-NP, 25-NP, 50-NP
Fluxgate performance with a Hall ASIC
Product description
Features:
• IPN = 6, 15, 25, 50 ARMS
• Closed loop multi-range current transducer
Datasheet available May 16th
• Voltage output
• Unipolar supply voltage
Product name Vcc (V) Meas. Range (A) Vout type
Package
• Compact design for PCB mounting
LKSR 6-NP
5
±20
Fixed Vref
PCB mounted
LKSR 15-NP
5
±51
Fixed Vref
PCB mounted
• Very low offset drift
LKSR 25-NP
5
±85
Fixed Vref
PCB mounted
LKSR
50-NP
5
±150
Fixed
Vref
PCB mounted
• Reference access OUT & IN (0.5 to 2.75 V)
• CKSR footprint compatible
• Extended measuring range for unipolar measurement
• Operating temperature range -40 to +105°C
Same accuracy as CKSR, pin-pin compatible
• CKSR LKSR
• CKSR series will not be phased-out
LPSR 6-NP, 15-NP, 25-NP, 50-NP
Fluxgate performance with a Hall ASIC.
Product description
Features:
• IPN = 6, 15, 25, 50 ARMS
• Closed loop multi-range current transducer
Datasheet available May 16th
• Voltage output
• Unipolar supply voltage
Product name Vcc (V) Meas. Range (A) Vout type
Package
• Compact design for PCB mounting
LPSR 6-NP
5
±20
Fixed Vref
PCB mounted
LPSR 15-NP
5
±51
Fixed Vref
PCB mounted
• Very low offset drift
LPSR 25-NP
5
±85
Fixed Vref
PCB mounted
LPSR
50-NP
5
±150
Fixed
Vref
PCB mounted
• Reference access OUT & IN (0.5 to 2.75 V)
• Extended measuring range for unipolar measurement
• OCD output, 5 secondary pins
• Operating temperature range -40 to +105°C
Same accuracy as CASR/CKSR fluxgate series
LXS 6-NPS, 15-NPS, 25-NPS
Fluxgate performance with a Hall ASIC.
Product description
Features:
• IPN = 6, 15, 25 ARMS
• Closed loop multi-range current transducer
Datasheet available May 16th
• Voltage output
• Unipolar supply voltage
Product name Vcc (V) Meas. Range (A) Vout type
Package
• Compact design for PCB mounting
LXS 6-NPS
5
±20
Fixed Vref
PCB mounted/THT
LXS 15-NPS
5
±51
Fixed Vref
PCB mounted/THT
• Very low offset drift
LXS 25-NPS
5
±85
Fixed Vref
PCB mounted/THT
• LTS footprint compatible
• With Aperture & Integrated primary conductor
• Operating temperature range -40 to +85°C
Replacement of LTS, pin-pin compatible, better accuracy
in temperature (4 times better offset drifts)
• LTS LXS
LXSR 6-NPS, 15-NPS, 25-NPS
Fluxgate performance with a Hall ASIC.
Product description
Features:
• IPN = 6, 15, 25 ARMS
• Closed loop multi-range current transducer
Datasheet available May 16th
• Voltage output
• Unipolar supply voltage
Product name Vcc (V) Meas. Range (A) Vout type
Package
• Compact design for PCB mounting
LXSR 6-NPS
5
±20
Fixed Vref
PCB mounted/THT
LXSR 15-NPS
5
±51
Fixed Vref
PCB mounted/THT
• Very low offset drift
LXSR 25-NPS
5
±85
Fixed Vref
PCB mounted/THT
• Reference access OUT & IN (0.5 to 2.75 V)
• LTSR footprint compatible
• With Aperture & Integrated primary conductor
• Extended measuring range for unipolar measurement
• Operating temperature range -40 to +85°C
Replacement of LTSR, pin-pin compatible, better accuracy
in temperature (4 times better offset drifts)
• LTSR LXSR
LXS, LXSR, LES, LESR, LKSR, LPSR are designed-to-quality & -tocost using the latest automotive techniques & manufacturing processes
LXS, LXSR, LES, LESR, LKSR, LPSR’s construction
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Industry 4.0 approach on the
manufacturing line (communication)
High traceability
Two serial secondary coils to get
best frequency performance
Press-fit connections, no soldering
Each transducer individually
calibrated in temperature
LEM patents
LPSR series: OCD trigger level can be set outside the
measurement range
On LPSR only, the Over Current Detection can be set between 1.25x and 5x IPN. It is
triggered by both positive and negative over-currents. The default value is 2.9x IPN.
Full characterization of the new transducer family has been
carried out over all the extremes of operating conditions
The offset drift is calculated as is less than 4 uV/OC, equivalent to less than 1.6
ppm/OC for these transducers (the specification limit is 4 ppm/OC). LKSR 25-NP
LXSR is pin-pin compatible with LTSR with higher-performance
and LKSR pin-pin compatible with CKSR
Performance comparison: LTSR, CKSR and the new LKSR
LTSR 25-NP
Earlier Hall
CKSR 25-NP
Fluxgate
LKSR 25-NP
New Hall
± 0.6
± 0.7
± 0.2
Temperature coefficient of sensitivity [ppm/ C]
± 50
± 40
± 40
Electrical offset voltage (mV)
25.0
1.4
1.0
Magnetic offset current (mA) after overload 10xIPN
(Referred to primary)
80
100
90
Sensitivity error (%)
O
Reference Voltage VREF @ IP=0
2.475 - 2.525 2.495 - 2.505 2.485 - 2.515
O
Temperature coefficient of VREF @ IP=0 (ppm/ C of 2.5V)
± 100
± 50
± 100
Temperature coefficient of VOUT - VREF @ IP=0 (ppm/ C of 2.5 V)
± 37.5
±4
±4
Linearity (%)
± 0.1
± 0.1
± 0.1
Reaction time @ 10% of IPN (ns)
100
300
300
Response time to 90% of IPN step (ns)
400
300
400
Overall accuracy (% of IPN) @ 25°C
0.7
1
0.8
Overall accuracy @ TA=85°C (% of IPN)
1.9
1.35
1.0
Overall accuracy @ TA=105°C (% of IPN)
NA
1.45
1.2
O
LXS, LXSR, LES, LESR, LKSR, LPSR: Various applications
Applications
Targeted applications:
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Robotics
Servo motor drives
AC output Solar inverters
Variable speed drives, AC & DC sides inverters
Uninterruptible & Switch-Mode Power Supplies
Battery-supply installations
Power supplies (welding)
Air conditioning
Home appliances
Static converters for DC motor drives