LEM Automotive Brochure 2020

Leading the world in

electrical measurement

A leading company in electrical

measurement, LEM engineers

the best solutions for energy

and mobility, ensuring that

our customers’ systems are

optimized, reliable and safe.

Our 1,500 employees in more

than 15 countries transform

technology potential into

powerful answers. We develop

and recruit the best global

talents, working at the forefront

of mega trends such as

renewable energy, mobility,

automation and digitization.

With innovative electrical

solutions, we are helping

our customers and society

accelerate the transition

to a sustainable future.

LEM partners with leading vehicle

manufacturers and Tier 1 suppliers on

powertrain electrification and autonomous

driving applications by providing sensors that

meet high standards of functional safety (ASIL).

LEM offers its customers a broad portfolio of

products tailored to a wide range of technical

requirements. LEM also prides itself on

providing leading engineering services for

customer-specific solutions.

Automotive

Our customers and products

Battery management

For start-stop vehicle architectures, we offer intelligent battery sensors
combining a unique expertise in current sensing with more than 20 years
experience in lead acid battery technologies.

In high voltage battery management (BMS HV), the CAB series brings the LEM
expertise of the fluxgate technology to our customers.
The CAB series offer best-in-class accuracy and a high level of functional
safety (ASIL) which avoids the installation of a redundant sensor.

We offer a broad range of single-phase Hall open loop sensors for high
compactness, fitted with an integrated busbar for cost effectiveness.
LEM developed dual range sensors with a dedicated low range to drastically
improve offset performance while delivering very high accuracy.

LEM is committed to retaining technology

leadership, continuously investing in R&D

to deliver innovative products and solutions to

customers, leveraging proven and cutting-edge

technologies.

Automotive

Technologies

LEM sensors

Our current and voltage sensors are used in a wide range of applications:
battery management and start-stop applications for conventional cars,
electrical motor controls, battery pack management and charging systems for
hybrid and electric vehicles.

Surface-mounted IC sensors

Power density is a critical factor for increasing performance, as space
constraints are prevalent in virtually every automotive application.
Ever increasing power densities are driving the emergence of new current
sensing technologies. Surface-mounted integrated circuit (IC) sensors
measure high currents in a very compact footprint and therefore have
become the technology of choice.

Smarter sensors

Smart grid and autonomous driving are major disruptions caused by the digital
revolution leading to smarter, greener and more efficient ecosystems. LEM is
at the forefront of these megatrends, developing smart sensors equipped with
data processing capabilities that insure higher safety levels thanks to
self-diagnostic features. The LEM sensors feature embedded software that
provides real time information to the on-board system, offering customers
high-value and versatile solutions.

Open loop technology

Open loop sensors use a Hall effect integrated circuit. The magnetic density,
contributing to the rise of the Hall voltage, is generated by the primary current
to be measured, which is supplied by a current source such as a battery or
generator. HEV and EV include battery monitoring, starter generators,
converters, electrical power steering, and motor drive applications.

Shunt technology

LEM shunt sensors, based on Ohm’s Law with voltage drop across the shunt
proportional to its current flow, measure both alternating currents (AC) and
direct currents (DC). Low cost and high reliability, low resistance shunt sensors
are a popular choice for current measurement. Smart shunt technology offers
mechanical and electrical design suitable for both light and heavy duty
applications with multiple batteries.

Fluxgate technology

LEM’s fluxgate sensing head is made of an induction coil with particular
characteristics. The core material has very high permeability and low
remanence (Hc), enabling very fast transition between linear and saturated
state. Energizing the coil with an alternative voltage makes the core go through
a complete hysteresis loop. With a primary current flowing through the coil,
the hysteresis loop is shifted. The measurement of this shift represents the
primary current.

Accuracy OA

offset

Accuracy OA

offset

Accuracy OA

offset

Accuracy

Ipmax

Accuracy

Ipmax

Accuracy

Ipmax

Price

Resolution

Non-

intrusive

Non-

intrusive

Non-

intrusive

Bandwidth

Power

consumption

Power

consumption

Power

consumption

Hall open loop

Shunt

Fluxgate

Automotive

12V battery management systems

LEM develops galvanically-isolated current

sensors dedicated to 12V battery management

for standard internal combustion engines (ICE)

and smart BMS for start-stop powertrains.

Solutions for ICE vehicles

LEM brings more than two decades of experience in 12V BMS for lead acid
batteries and offers a leading product portfolio for standard ICE powertrains.

Solutions for start-stop vehicles

LEM offers a range of intelligent battery sensors that combine unique expertise
in current sensing technologies with the experience acquired over the years in
lead acid battery technologies.

12V battery sensor in vehicles

Wheels

Alternator

DC 12V

power net

Battery

12V

Main ECU

Power

management

Starter

Engine

Fuel

Current

sensor

Sensor

HAB

HABT

HBCT

SSVT

Technology

Open loop

Open loop + temp

Smart shunt

Current range max

+/- 400A

+/- 120A

+/- 250A

+/- 1500A

Output

Voltage/PWM

Voltage

CAN/LIN SoX status

Global error @25°C

0,8%

0,5%

Overall accuracy

(over T°C)

3,75%

3,6%

3,75%

1,5%

Offset current

+/- 200 mA

+/- 350 mA

+/- 20 mA

Bandwidth

(programmable)

1.1 kHz

Mounting type

Cable

Clamp

Input voltage

+5V

+12V/+24V

Consumption

7 mA

10 mA

12 mA

Features

HAB

Analog Hall effect

HABT

Analog Hall + temp

+/- 120A

Temperature at 1%

HBCT

Analog Hall + temp

+/- 250A

Temperature at 1%

SSVT

Smart shunts

SoX status

CAN/LIN transceiver

Applications

12V BMS sensor portfolio

12V BMS specifications

BMS standard ICE

BMS start-stop

LEM high voltage battery pack BMS for

hybrid and electric vehicles

Fluxgate technology

LEM brings a unique capability in fluxgate, the leading technology for high
performance battery management that offers contactless solutions.
The CAB series offers best-in-class accuracy (up to 0.1% and at

max), an

offset at 0A measurement as well as ASIL readiness which avoids the
installation of a redundant sensor.
The CAB fluxgate products are embedded in the battery disconnection unit
(BDU) or the battery pack of vehicles with electrified powertrains (xEV).

Hall open loop technology

LEM's broad portfolio of single range sensors combines high compactness and
an integrated busbar design for cost effectiveness. LEM developed a high
accuracy dual range sensor with a dedicated low range to drastically improve
offset performances.
The LEM Hall-based products are suitable for the electronic measure of current
in high power and low voltage applications with galvanic separation between
the primary circuit (high power) and the secondary circuit (electronic circuit).
LEM offers the choice between different ranges of current measure in the
same housing while providing excellent accuracy and very good linearity, with
low thermal offset and thermal sensitivity drifts.

Automotive

HV battery management systems

LEM high voltage battery pack BMS for

hybrid and electric vehicles

From mid power to ASIL ready performance

LEM provides a portfolio of solutions featuring a wide range of power levels
that complies with the highest requirements of performance and safety.

Automotive

HV battery management systems

Sensor

HSW

HAH1BVW

HSNBV

DHAB

CAB 500

CAB 1500

CAB 500 SF

CAB 1500 SF

Technology

Open loop

Open loop dual range

Fluxgate

Current range max

+/- 1000A

+/- 1200A

+/- x00A

+/- 1000A

+/- x00A

+/- 1000A

+/- 500A

+/- 1500A

+/- 500A

+/- 1500A

ASIL readiness

–

ASIL B

ASIL C

Output

Voltage single

Voltage single/dual

Voltage dual

CAN/LIN

Global error @25°C

0,5%

0,8%

0,5% (single)

0,8% (single)

0,1%

Overall accuracy

(over T°C)

2,0%

2,8%

0,5%

Bandwidth

(programmable)

1,1 kHz

100 Hz

Mounting type

Busbar

Integrated busbar

Cable/Busbar

Busbar

Cable/Busbar

Busbar

Input voltage

+5V

+12V

Consumption

7 mA

8/16 mA

Single 7 mA

Dual 14 mA

16 mA

40 mA (0A)

130 mA

(@500A)

40 mA (0A)

500 mA

(@1500A)

40 mA (0A)

130 mA

(@500A)

40 mA (0A)

500 mA

(@1500A)

HV BMS sensor specifications

Performance/Power

Mid power xEV

High performance BMS

1500A

100A low

1000A high

1200A peak

1000A peak

250A rms

Applications

HAH1BVW

Busbar mounting

DHAB

Cable/Busbar

mounting

Mid power xEV

High range, low range channel

Suitable for redundancy

Low offset

High power xEV

High range, low range channel

Coulomb counting

Very low offset

High power

Very high performance

Coulomb counting

ASIL level/CAN bus output

Zero offset

Hall open loop

Single core

Dual core

Fluxgate

HSW

Busbar mounting

HSNBV

Integrated busbar

CAB series

(CAB 500, 1500)

HV BMS sensor portfolio

Sensor

HSW

HAH1BVW

HSNBV

DHAB

CAB 500

CAB 1500

CAB 500 SF

CAB 1500 SF

Technology

Open loop

Open loop dual range

Fluxgate

Current range max

+/- 1000A

+/- 1200A

+/- x00A

+/- 1000A

+/- x00A

+/- 1000A

+/- 500A

+/- 1500A

+/- 500A

+/- 1500A

ASIL readiness

–

ASIL B

ASIL C

Output

Voltage single

Voltage single/dual

Voltage dual

CAN/LIN

Global error @25°C

0,5%

0,8%

0,5% (single)

0,8% (single)

0,1%

Overall accuracy

(over T°C)

2,0%

2,8%

0,5%

Bandwidth

(programmable)

1,1 kHz

100 Hz

Mounting type

Busbar

Integrated busbar

Cable/Busbar

Busbar

Cable/Busbar

Busbar

Input voltage

+5V

+12V

Consumption

7 mA

8/16 mA

Single 7 mA

Dual 14 mA

16 mA

40 mA (0A)

130 mA

(@500A)

40 mA (0A)

500 mA

(@1500A)

40 mA (0A)

130 mA

(@500A)

40 mA (0A)

500 mA

(@1500A)

HV BMS sensor specifications

For low to high power inverters (MHEV to BEV)

• Integrated current sensing technologies and PCB mounted sensors

For mid to high power inverters (HEV to BEV)

• Single busbar mounted sensor legacy family
• Integrated busbar sensor for compactness, improved performance and

easy assembly

For high power inverters (BEV)

• Multiphase sensors to improve system integration
• ASIL ready features

Performance/Power

1500A

1000A

800A

250A

Applications

HC6 F/H

HC5FW

HC16FW

HAH3DR series

HSNDR

HAH1DRW

Low power mild hybrid

Mid power xEV

High power xEV

High power multiphase sensor

Single-phase

Multiphase

HAH2DR

HC2 F/H

Motor control sensor portfolio

Single-phase and multiphase sensors

Sensor

HC2F/H

HC6F/H

HC5FW

HC16FW

HSNDR

HAH1DRW

Current range

max

1 phase +/- 250A

1 phase +/- 800A

1 phase +/- 900A

1 phase +/- 1600A

1 phase +/- 1200A

1 phase +/- 1500A

Aperture type

(size,

compatibility)

Busbar

(7,2 x 2,5 mm)

ø 4,6 mm

Busbar

(10,5 x 4,2 mm)

ø 7,5 mm

Busbar

ø 12,5 mm

Busbar

(20,5 x 6 mm)

Integrated busbar

(customization)

Busbar

(20,5 x 6 mm)

Output type

Through-hole PCB

voltage

Through-hole PCB

voltage

Through-hole PCB

voltage

SMD or Through-

hole PCB Voltage

Molex connector

voltage

Tyco connector

voltage

Accuracy @25°C

1,2%

1,25%

Overall accuracy

(over T°C)

3,25%

3,2%

3,75%

Bandwidth

50 kHz

Input voltage

+5V

Consumption

typical

15 mA

30 mA

15 mA

Single-phase sensor specifications

Automotive

Motor control

LEM offers a wide range of solutions for all inverters

• PCB mounted sensors
• Busbar mounted
• Integrated busbar
• Multiphase sensors
• Reference design sensors *

* Infineon hybrid pack HAH3DR S07 Series

Sensor

HAH3DR S07 SPx

HAH3DR S0A

HAH3DR S0C

Current range max

3 phases +/- 1200A

3 phases

+/- 1500A

2-3 phases

+/- 800A

ASIL readiness

ASIL B/C

–

Aperture type

(size, pitch,

compatibility)

Infineon hybrid pack

long/short tab

(14,5 x 1,5 mm)

Pitch 47 mm

Busbar

(ø 14,5 mm)

Pitch 34 mm

Busbar

(14,5 x 5,5 mm)

Pitch 30 mm

Output type

Voltage pressfit

Voltage Molex connector

Voltage pin soldering

Accuracy @25°C

1,2%

1,25%

Overall accuracy

(over T°C)

3,2%

3,25%

Bandwidth

50 kHz

Input voltage

+5V

Consumption

typical

15 mA/phase

Sensor

HAH2DR

HAH3DR S00

HAH3DR S03 SPx

HAH3DR S06

Current range max

2 phases +/- 650A

3 phases +/- 900A

Aperture type

(size, pitch,

compatibility)

Busbar

(13,8 x 2,3 mm)

Pitch 44 mm

Busbar

(14,5 x 5,5 mm)

Pitch 30 mm

Busbar

(15,5 x 7,5 mm)

Pitch 38,5 mm

Busbar

(15,5 x 5,5 mm)

Pitch 38,5 mm

Output type

Voltage

JAM connector

Voltage

PCB mounted

Voltage

Hirose connector

Voltage

Molex connector

Accuracy @25°C

2,5%

Overall accuracy

(over T°C)

3,2%

3,5%

4,25%

Bandwidth

50 kHz

Input voltage

+5V

Consumption

typical

15 mA/phase

Multiphase sensor specifications

Bi-directional LLC

Power/Current

250-1000A

200-500A

10-200A

6 mA

Applications

Busbar mounted

PCB mounted

Integrated current sensor (ICS)

Leakage current

Residual current detection

On-board charger

DC/DC primary

On-board charger

DC/DC secondary

Power DCDC fuel cell

DC/DC secondary

Charging systems sensor portfolio

Current measurement PFC

Current measurement LLC tank

Bidirectional on-board charger architecture

Battery

vehicle

Totem pole PFC

Grid

Sensor

GO SME

GO SMS

HMSR

Current range RMS

10-20A rms

10-30A rms

Peak current

50A peak

75A peak

Isolation

2,5kV

3kV

4,9kV

Accuracy (25°C - over T°C)

1,3% - 3%

1% - 2%

Output type

Analog

Vref/Ratiometric

Vref

Ratio/Vref

Temp. range

-40°C to 125°C

-40°C to 150°C

Bandwidth

300 kHz

Supply voltage

3,3V/5V

AECQ100

Yes

Target applications

OBC primary, DCDC

OBC, DCDC

Package

SOIC 8

SOIC 16

SOIC 16 (footprint compatible)

Sensor

HC2 F/H

HC5FW

HSNDR

HAH1DRW

HAM

Technology

Open loop

Current range max

+/- 250A

+/- 900A

+/- 1200A

+/- 1500A

+/- 300A

Output

Voltage

Accuracy @25°C

1,2%

1,25%

Overall accuracy

(over T°C)

3,25%

3,75%

3,2%

Bandwidth

50 kHz

500 kHz

Mounting type

Through-hole PCB

Integrated busbar

Busbar

Integrated busbar

Input voltage

+5V

Consumption

15 mA

Integrated current sensor specifications

PCB and busbar mounted sensor specifications

LEM headquarters

Geneva, Switzerland

Automotive

Contact

North America

LEM USA inc. (Detroit)
28221 Beck Road, Suite A4
Wixom, MI 48393
USA
Tel. +1 248 324 0395
Fax +1 248 324 0397
autosales-na@lem.com

Europe

LEM Europe GmbH
Frankfurter Strasse 74
64521 Gross-Gerau
Germany
Tel. +49 6152 930 10
Fax +49 6152 846 61
leu-de@lem.com

China

LEM Electronics (China) co. Ltd.
No. 28, Linhe str. Linhe
Industrial development zone
Shunyi district, Beijing
China
Post code: 101300
Tel. +86 10 89 45 52 88
Fax +86 10 80 48 43 03
+86 10 80 48 31 20
autosales-china@lem.com

South Korea

LEM Management Services Sàrl,
Branch Korea
(Seocho-dong, Wonil Bldg)
1-3F(311) 10
Nambushuhwan-ro 333-gil
Seocho-gu
Seoul, Korea
autosales-korea@lem.com

Japan

LEM Japan k.K.
2-1-2 Nakamachi
Machida-Tokyo 194-0021
Japan
Tel. +81 42 725 81 51
Fax +81 42 728 81 19
autosales-japan@lem.com

Rest of the world

LEM International SA
8, Chemin des Aulx
1228 Plan-les-Ouates
Switzerland
Tel. +41 22 706 13 92
Fax +41 22 706 13 28
automotive_sales@lem.com

Sale

R&D Produc

tion

North America

Detroit MI

Milwaukee WI

Columbus OH

Amherst MA

Los Angeles CA

Europe

Frankfurt, Germany

Vienna, Austria

Brussels, Belgium

Randers, Denmark

Paris, France

Padova, Italy

Skelmersdale, UK

Lyon, France

Sofia, Bulgaria

China

Beijing

Shanghai

Shenzhen

Xian

Hefei

Taipei, Taiwan

South Korea

Seoul, South Korea

Japan

Tokyo, Japan

Rest of world

Geneva, Switzerland

Pune, India

Tver, Russia