Application

BLDC-Drives

BLDC motors (brushless DC motors) are electric motors that work without mechanical brushes. They are used in a wide range of industries, from the automotive industry to medical technology and aerospace. We supply suitable shunts for precise current measurement and maximum reliability in your BLDC motors.

 

BLDC motor close-up cropped

Advantages of BLDC motors

BLDC motors are representatives of the commercially available 3-phase AC rotary field motors with permanent magnets and are characterized in particular by their compact design, high efficiency and practically wear-free operation.

In conjunction with targeted control, they can also be operated at low speeds with high efficiency.  

The carefully developed control electronics and software follow the approach of field-oriented control (FOC), which enables low power consumption of the entire assembly and allows the BLDC motor to operate at maximum torque virtually all the time.

Shunts in control units for BLDC motors

Precise recording of the stator current is crucial for precise field-oriented control (FOC). Motor control can only be implemented efficiently, reliably and powerfully with exact measured values.

Copper coil of the stator of a brushless motor

Low-resistance shunts are ideal for this task. Whether cost-efficient on the low side or phase-accurate with multiple shunts - the choice depends on the requirements of the application.

In both cases, the task of the shunt is to measure the current precisely and pass on the falling voltage signal to the downstream control circuit.  

Components based on ISA-PLAN® technology are available in the range from 2mOhm to 1Ohm and offer optimum performance from standard sizes 0805 to 2512.  

Low
thermovoltage

Thanks to their special composition, our alloys exhibit a barely measurable thermoelectric voltage (EMF) against copper and thus enable extremely precise measurement.

Optimum
long-term stability

By choosing the right product, paired with the precise alloys from Isabellenhütte, you get a product whose long-term stability is unsurpassed.

Low
inductance

The components of the Isabellenhütte are designed to have the lowest possible inductance, which ensures precise control at high voltage frequencies.

Our products for your BLDC-Drives

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

BVB Resistor

4-terminal resistor made of composite material. Ideal for use on DCB and FR4 Space-saving design.

Product area: Resistor
Size: 2725
Power (Watt): 3 - 12
Tol (%): 1.00
Res (Ohm): 0.0002 - 0.005
Details PDF

BVE Resistor

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

Product area: Resistor
Size: 5930
Power (Watt): 4 - 15
Tol (%): 1.00 - 5.00
Res (Ohm): 0.0001 - 0.003
Details PDF

BVN Resistor

4-terminal resistor made of composite material. Ideal for use on DCB and FR4. Space-saving design.

Product area: Resistor
Size: 1216
Power (Watt): 3 - 10
Tol (%): 1.00 - 5.00
Res (Ohm): 0.0003 - 0.003
Details PDF

BVR Resistor

4-terminal resistor made of composite material. Ideal for use on DCB and FR4. Very low resistance values.

Product area: Resistor
Size: 4026
Power (Watt): 5 - 12
Tol (%): 1.00 - 5.00
Res (Ohm): 0.0002 - 0.003
Details PDF

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
Details PDF

BVT Resistor

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

Product area: Resistor
Size: 2512
Power (Watt): 1.5 - 10
Tol (%): 1.00 - 5.00
Res (Ohm): 0.0002 - 0.0068
Details PDF

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
Details PDF

CMK Resistor

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

Product area: Resistor
Size: 1206
Power (Watt): 0.5 - 4
Tol (%): 1.00 - 5.00
Res (Ohm): 0.005 - 0.1
Details PDF

CMP Resistor

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

Product area: Resistor
Size: 2010
Power (Watt): 1 - 2
Tol (%): 1.00 - 5.00
Res (Ohm): 0.01 - 0.5
Details PDF

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
Details PDF

FMK Resistor

2-terminal resistor. Low resistance values <=6 milliohms. Good TC. Solid construction as metal plate. High pulse load.

Product area: Resistor
Size: 1206
Power (Watt): 1 - 3.5
Tol (%): 1.00 - 10.0
Res (Ohm): 0.002 - 0.006
Details PDF

FMP Resistor

2-terminal resistor. Low resistance values <=6 milliohms. Good TC. Solid construction as metal plate. High pulse load.

Product area: Resistor
Size: 2010
Power (Watt): 1 - 3.5
Tol (%): 1.00 - 5.00
Res (Ohm): 0.002 - 0.006
Details PDF

SMK Resistor

2-terminal resistor with large solder pads. Very powerful. Largest selection of resistor values up to 0.5 Ohm.

Product area: Resistor
Size: 1206
Power (Watt): 1 - 1.5
Tol (%): 1.00 - 5.00
Res (Ohm): 0.008 - 0.5
Details PDF

SMP Resistor

2-terminal resistor with large solder pads, very powerful. Largest selection of resistor values up to 1 Ohm.

Product area: Resistor
Size: 2010
Power (Watt): 2 - 3
Tol (%): 0.500 - 1.00
Res (Ohm): 0.005 - 1
Details PDF

SMS Resistor

2-terminal resistor with large solder pads. Very powerful. Largest selection of resistance values up to 1 Ohm.

Product area: Resistor
Size: 2512
Power (Watt): 3 - 5
Tol (%): 0.500 - 5.00
Res (Ohm): 0.005 - 1
Details PDF

SMT Resistor

2-terminal resistor with large solder pads. Very powerful. Largest selection of resistor values up to 4.7 Ohm.

Product area: Resistor
Size: 2817
Power (Watt): 5 - 7
Tol (%): 0.500 - 5.00
Res (Ohm): 0.004 - 4.7
Details PDF

VMK Resistor

2-terminal resistor. Standard solder pad geometry. Very low TC <20ppm/K for the entire value range. High continuous load, wide range of resistance values up to 470 mOhm.

Product area: Resistor
Size: 1206
Power (Watt): 1 - 1.5
Tol (%): 1.00 - 5.00
Res (Ohm): 0.01 - 0.47
Details PDF

VMP Resistor

2-terminal resistor. Standard solder pad geometry. Very low TC <20ppm/K for the entire value range. High continuous load. Wide range of resistance values up to 1 Ohm.

Product area: Resistor
Size: 2010
Power (Watt): 2 - 3
Tol (%): 1.00 - 5.00
Res (Ohm): 0.005 - 1
Details PDF

VMS Resistor

2-terminal resistor. Standard solder pad geometry. Very low TC <20ppm/K for the entire value range. High continuous load. Wide range of resistance values up to 1 Ohm.

Product area: Resistor
Size: 2512
Power (Watt): 3 - 4
Tol (%): 1.00 - 5.00
Res (Ohm): 0.005 - 1
Details PDF

WAF Resistor

2-terminal resistor made of roll-clad strip material, high load capacity, very small design, low values <=1mΩ.

Product area: Resistor
Size: 1213
Power (Watt): 6 - 7
Tol (%): 1.00 - 5.00
Res (Ohm): 0.0005 - 0.001
Details PDF

WAK Resistor

2-terminal resistor made of roll-clad strip material, high load capacity, very small design, low values <=1mΩ very low inductance.

Product area: Resistor
Size: 1206
Power (Watt): 6
Tol (%): 1.00 - 5.00
Res (Ohm): 0.0005 - 0.001
Details PDF

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