Application

Drive Systems

Current measurement in drive systems contributes significantly to efficiency, safety and durability and is therefore an essential part of modern industrial, commercial and automotive applications. Our low-impedance shunts are the ideal solution for high-precision measurement requirements.

Control unit for electric vehicles, installed in the electric system of the eco-car engine

Phase current measurement in drive systems

Measuring the phase current in drive systems, especially in inverters and converters, is a major challenge.

The current must be measured either between the power section and the motor or directly in the IGBT module. Due to the high power and temperature loads, highly precise and reliable solutions are required.

IPC-CII-220-LVDS-3 - Z-YH-261

Low-resistance shunts for high-precision measurements

Shunts in the range from 200 µOhm to 5 mOhm are used due to the high-power application. Outside the module, they are increasingly replacing conventional current transformers. Various components and sizes offer solutions for integration in IGBT modules. The four-pole design optimizes the TCR with a temperature coefficient from 20ppm/K and ensures effective heat dissipation thanks to the low internal thermal resistance (Rthi).

circuit diagram-drive-systems

Our high-performance resistance material ISAOhm® and the large connections ensure ideal heat transfer and higher application temperatures. ISAOhm® also offers long-term stability of ±1.0 % at 130 °C.  

The four-pole shunts are optimized for ceramic substrates (DCB) and feature flexible leads to absorb thermal expansion and reduce soldering stress. They offer excellent performance on DCB and IMS substrates during thermal cycling thanks to their linear thermal expansion coefficient of 17 x 10^-6 for Cu and 7.4 x 10^-6 for DCB.

Long-term
stability

ISAOhm® high-performance resistance material with ±1.0 % stability at 130 °C.

Efficient
integration

Four-pole design and flexible connections for ceramic substrates (DCB) to reduce soldering stress.

Optimized heat­dissipation­conduction

Thanks to the low internal thermal resistance (Rthi) and the large connections.

Our products for your drive systems

If you cannot find a suitable product for your requirements here, please contact us.

BAL Resistor

Very low-resistance busbar shunt in a small design for battery management systems. Resistance value 100µOhm

Product area: Resistor
Size: 5216
Power (Watt): 12
Tol (%): 5.00
Res (Ohm): 0.0001

BAN Resistor

Very low-resistance busbar shunt for battery management systems or energy storage systems. Resistance value 25 µOhm.

Product area: Resistor
Size: 8436
Power (Watt): 36
Tol (%): 5.00
Res (Ohm): 0.000025

BAS Resistor

Very low-resistance busbar shunt for battery management systems or energy storage systems. Resistance values between 35µOhm and 500µOhm.

Product area: Resistor
Size: 8420
Power (Watt): 10 - 36
Tol (%): 5.00
Res (Ohm): 0.000035 - 0.0005

BAV Resistor

Very low-resistance busbar shunt for battery management systems or energy storage systems. Resistance values between 35 µOhm and 100 µOhm, Pressfit connections.

Product area: Resistor
Size: 8420
Power (Watt): 36
Tol (%): 5.00 - 10.0
Res (Ohm): 0.000035 - 0.0001

BAX Resistor

Very low-resistance busbar shunt for battery management systems or energy storage systems. Resistance values of 20 µOhm and 25 µOhm.

Product area: Resistor
Size: 8436
Power (Watt): 50
Tol (%): 5.00
Res (Ohm): 0.000005 - 0.00002

BSL Resistor

Where very high accuracy and reliability and a separation of the battery management system from the busbar currents is key to success, the analog sensor series from Isabellenhütte is the perfect fit. The temperature and current measurement designed for battery management ICs offers two of the most important functions of the battery management system with optimum functionality and expertise in shunt-based current measurement. Resistance value 100µOhm, NTC temperature measurement and DMC for factor-based TCR compensation

Product area: Resistor
Size: 5216
Power (Watt): 10
Tol (%): 5.00
Res (Ohm): 0.0001

BSN Resistor

Where very high accuracy and reliability and a separation of the battery management system from the busbar currents is key to success, the analog sensor series from Isabellenhütte is the perfect fit. The redundant temperature and current measurement designed for battery management ICs offers two of the most important functions of the battery management system with optimum functionality and expertise in shunt-based current measurement. Resistance value 25µOhm, NTC temperature measurement and DMC for factor-based TCR compensation

Product area: Resistor
Size: 8436
Power (Watt): 36
Tol (%): 5.00
Res (Ohm): 0.000025

BSS Resistor

Where very high accuracy and reliability and a separation of the battery management system from the busbar currents is key to success, the analog sensor series from Isabellenhütte is the perfect fit. The temperature and current measurement designed for battery management ICs offers two of the most important functions of the battery management system with optimum functionality and expertise in shunt-based current measurement.

Product area: Resistor
Size: 8420
Power (Watt): 20 - 30
Tol (%): 5.00
Res (Ohm): 0.00005 - 0.0001

BSX Resistor

Where very high accuracy and reliability and a separation of the battery management system from the busbar currents is key to success, the analog sensor series from Isabellenhütte is the perfect fit. The temperature and current measurement designed for battery management ICs offers two of the most important functions of the battery management system with optimum functionality and expertise in shunt-based current measurement. Resistance value 25 µOhm, NTC temperature measurement and DMC for factor-based TCR compensation.

Product area: Resistor
Size: 8436
Power (Watt): 45
Tol (%): 5.00
Res (Ohm): 0.000025

BVS Resistor

2-terminal resistor made of composite material. Very low resistance values. Large connectors for high currents.

Product area: Resistor
Size: 3920
Power (Watt): 2.5 - 12
Tol (%): 1.00 - 5.00
Res (Ohm): 0.0001 - 0.005

BVZ Resistor

2-terminal resistor made of composite material. Ideal for use on DCB. Space-saving design.

Product area: Resistor
Size: 4026
Power (Watt): 5 - 13
Tol (%): 1.00 - 5.00
Res (Ohm): 0.000525 - 0.003

CMS Resistor

2-terminal resistor for medium power requirements. Low TC <50ppm/K for the entire value range.

Product area: Resistor
Size: 2512
Power (Watt): 2 - 2.5
Tol (%): 1.00 - 5.00
Res (Ohm): 0.01 - 0.5

GMP Resistor

4-terminal resistor with gold-plated contact surface. Ideal for conductive bonding or soldering applications.

Product area: Resistor
Size: 2010
Power (Watt): 1
Tol (%): 1.00 - 5.00
Res (Ohm): 0.01 - 0.08

PLU Resistor

Bondable 4-wire resistor with gold-plated contact surface. High continuous power.

Product area: Resistor
Size: 2439
Power (Watt): 5
Tol (%): 5.00
Res (Ohm): 0.001

PMH-C Resistor

Bondable high-power resistor with gold-plated contact surface. 4-terminal version. High continuous power.

Product area: Resistor
Size: 2512
Power (Watt): 5
Tol (%): 0.500 - 5.00
Res (Ohm): 0.005 - 0.050

PMT Resistor

Pulse load resistor for snubber circuits or pre-charging and discharging applications.

Product area: Resistor
Size: 2817
Tol (%): 10.0
Res (Ohm): 0.050 - 2.5

WAT Resistor

2-terminal resistor made of roll-clad strip material, high load capacity, low TCR, values from 0.2 to 0.75 mΩ.

Product area: Resistor
Size: 2512
Power (Watt): 5 - 10
Tol (%): 1.00 - 5.00
Res (Ohm): 0.0002 - 0.00075

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