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LEM presents:CAS, CASR, CKSR

family

3 February 2009München

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Agenda for the Press Conference

1. LEM Overview2. Strategy3. Strategy of the Industry Segment4. Markets for CAS, CASR, CKSR5. Applications6. Technical Product Details7. Product Support8. Sample Kits9. Summary

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Hans Dieter HuberVP Industry

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1. LEM at a Glance

• Market leader in providing innovative and high quality solutions for measuring electrical parameters

• Founded in 1972 • Sales of EUR 75 million for HY 2008/09 • More than 900 employees• Over 2’000 products• 14 Sales offices across the globe

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1. Applications Know-How in Core Markets

Industry TractionAutomotive Energy & Automation

• Market leader in providing innovative and high quality solutions for measuring electrical parameters

• Target applications in the industrial, traction, energy & automation, automotive markets

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2. LEM Strategy

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“LEM Inside”• Working with leading customers in close and confidential relationships• Pure play company focused on the components market• Market share driven

“Made by LEM”• Same high standards of quality across all LEM production centers, design for

quality & produce for quality• 6 sigma projects across the production sites

“Fit for the application”• In-depth knowledge of customer application enables us to supply exactly what

the customer needs• Working locally @ design-in, in global environment @ supply• Offering both Standard and Customer specific products• Best cost, quality and service

2. LEM Business Model

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3. Industrial Segment: Business Development

Sal

es in

CH

F m

illio

ns

Market• Growth well above industry average

especially in energy efficiency and renewable energy areas

• Market share growing to near 50%

Applications• Industry: motor drive controls, energy

conversion and wind & solar energy, welding, UPS

ROS

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3. Industry Segment for LEM

• Well positioned in the market for isolated current measurement– 49% global market share worldwide – Sales in all regions– The traditional core business of LEM

% sales by region

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3. Industry Strategy

• Keep the leading edge of technology and increase our marketleadership position

• World class supplier for our customers on a global basis

• Provide all current and voltage measurement solutions forour customers, both catalogue and customized products

• Maintain the close working relationship with our customers

• Extend the market to new applications in our field

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2. Technology Roadmap

• Current measurement technologies– Extension of technologies ( Hall, Opto, Fluxgate, combination)– New products with Asic based on Fluxgate.– Watch other technologies like MR and GMR

• Performance improvement– New Asic generations based on Hall and Fluxgate in development– New techniques and topologies to increase accuracy– New materials and Nano-technology

• Product features– Integration of additional features into the Asic ( Overcurrent, fast output,

filter)• Cost and size reduction

– New developments to reduce cost and also size for better usage in the application ( SMD...)

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3. Product Strategy

Market demand:

• Need of better performances for high end applications

• Higher nominal current (50 A) in small size

• Differential measurement integrated

• Higher isolation voltage

=> LEM responds to the market

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4. Markets for CAS, CASR, CKSR

With this family, LEM targets two key markets

1.High performance drives

2.Inverters for renewable energy

All applications that require high accuracy and low drift will be suitable for CAS, CASR, CKSR

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Jürgen KoßSales & Marketing Manager

Germany

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5. Applications – Solar Inverters

Why is the current measurement important ?1. To improve the efficiency of the system2. To control the DC current sourced in the grid

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5. Applications: Motor DrivesWhy is the current measurement important ?

1. To improve the dynamic performance of the system

2. To reduce the torque ripple due to the inaccuracy

3. To have a full protection of the motor and inverter in case of current fault

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6. What are CAS / CASR / CKSR Models ?

• Highly accurate current transducers @ +85°C

CAS models: 2.5 to 3 % of IPN

CASR & CKSR models: 1.2 to 1.8 % of IPN

• Compact mechanical design / PCB mounted

30 % smaller (height) vs LTS product

• 4 current ranges per type:

CAS / CASR / CKSR 6-NP: 6 ARMS

CAS / CASR / CKSR 15-NP: 15 ARMS

CAS / CASR / CKSR 25-NP: 25 ARMS

CAS / CASR / CKSR 50-NP: 50 ARMS

• Measurements from 1.5 ARMS to 50 ARMS

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6. CAS / CASR / CKSR Family Which technology reaches these performances ?

Closed Loop Fluxgate technology

Transformer effect for sub-µs response

High gain for zero variation

Bridge driver – lower power & higher current ranges

Integrated stable reference

Precision differential output amplifier: output referenced to VREF

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6. CAS / CASR / CKSR: Main Parameters

• IPN : 6, 15, 25 or 50 A

• Measuring range: 20, 51, 85 or 150 A (> 3 x IPN )

• Max offset drift:CAS: 60 to 80 ppm/K (dep. on IPN)

CASR & CKSR: 7 to 30 ppm/K (dep. on IPN)

• Gain drift: 40 ppm/K (due to RM )

• 5 V Single Power supply

• Response time @ 90 % : 0.3 us

• Bandwidth (+/- 1 dB) : DC .. 200 kHz

• Operating temperature range: -40 °C .. 85 °C

• Creepage and clearance distances:

• Analog output voltage

• Voltage reference access (Internal or external) on CASR and CKSR models

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6. CAS / CASR / CKSR: What are the Differences?

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6. CAS / CASR / CKSR: Difference to LTS / LTSR ?

• Higher accuracy at +85°C / Lower offset & gain drifts

• A 50 ARMS version for each type

• 30% smaller

• 100% compatibility with LTS and LTSR

• CKSR models Different primary footprint:

Higher clearance / creepage distances Higher insulation

(8.2 mm / 600 VRMS as working voltage (EN 50178))

4 primary pins Configuration for 1.5 ARMS nominal

30 % smaller

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6. CAS: Accuracy Performances

CAS 6-NP LTS 6-NP CAS 15-NP LTS 15-NP CAS 25-NP LTS 25-NP

Nominal current AMeasuring range A 20 19.2 51 48 85 80

Output voltage noise100 Hz..10 kHz (typ.)

mVpp 2.4 10 1.0 4.2 0.6 2.5

OutputSensitivity mV/A

Sensitivity error % of Ipn 0.7 0.6 0.7 0.6 0.7 0.6Offset drift

(25°C .. 85°C) % of Ipn 1.92 4.8 1.68 2.9 1.44 2.4

Gain drift(25°C .. 85°C)

% of Ipn 0.24 0.3 0.24 0.3 0.24 0.3

Linearity % of Ipn 0.1 0.1 0.1 0.1 0.1 0.1Accuracy @ + 25 °C % of Ipn 0.80 0.70 0.80 0.70 0.80 0.70Accuracy @ + 85 °C % of Ipn 3.0 5.80 2.7 3.58 2.5 3.40

Offset mV 10.4 25 7.1 25 6.3 25

104.2 41.7 25.0

6 15 25

Voltage Voltage Voltage

All parameters are max values

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6. CASR / CKSR: Accuracy Performances

CASR 6-NP LTSR 6-NP CASR 15-NP LTSR 15-NP CASR 25-NP LTSR 25-NP

Nominal current AMeasuring range A 20 19.2 51 48 85 80

Output voltage noise100 Hz..10 kHz (typ.) mVpp 1.7 10 0.7 4.2 0.4 2.5

OutputSensitivity mV/AGain error % of Ipn 0.7 0.6 0.7 0.6 0.7 0.6Offset drift

(25°C .. 85°C)% of Ipn 0.72 3.6 0.48 1.5 0.24 0.9

Gain drift(25°C .. 85°C)

% of Ipn 0.24 0.3 0.24 0.3 0.24 0.3

Linearity (max) % of Ipn 0.1 0.1 0.1 0.1 0.1 0.1Accuracy @ +25 °C % of Ipn 0.8 0.70 0.8 0.70 0.8 0.70Accuracy @ + 85 °C % of Ipn 1.8 4.60 1.5 2.54 1.3 1.90

Offset mV 5.3 25 2.2 25 1.4 25

104.167 41.667 25.000

6 15 25

Voltage Voltage Voltage

All parameters are max values

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6. CAS / CASR / CKSR: Advantages

• High accuracy at +85°C / Low offset and gain drifts

• Small mechanical design

• Low influence in common mode

• High flexibility:

• 6 A, 15 A, 25 A and 50 ARMS model for each type

• Multi-range configuration for each model

• CKSR models: Higher clearance / creepage distances Higher insulation

• CKSR models: To measure as low as 1.5 ARMS (4 primary pins + multi-range

configuration)

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6. CAS / CASR / CKSR: Advantages

• Differential versions are possible under request

• Low output noise

• Voltage reference access

External reference from 0 to 4 V

• Successful over +85°C/+85% relative humidity test during 1000 hours

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7. Product support

LEM provides customers support throughout the design anddevelopment phases

• Supplying dedicated technical customer service with in-depth know-how

• Detailed data sheets

• Technical leaflet

• Characterization report according to the followed standards

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8. Sample Kits

Available on

www.lem.com

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9. Summary – CAS, CASR, CKSR

• High accurate current measurement for high end applications• Multi-range product from 1.5 – 50 A• Differential current measurement possible• Compact size with high isolation• Designed and produced according to top quality standards

• Now available!

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Your Questions?