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VESC Replacing Shunt Resistor with Hall Current Sensor?

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happy85
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VESC Replacing Shunt Resistor with Hall Current Sensor?

Can the shunt-resistor-based current sensing in the VESC controller be replaced with an automotive Hall effect (magnetic ring type) current sensor?

Based on the VESC6 high-power circuit schematic, the INA240 has been replaced by a Hall effect current sensor, while the analog switch circuitry has been retained.
The hardware used is based on the 75_100_R3 design.
The specifications of the Hall effect current sensor are as follows:

 

  • Supply Voltage: 3.3V
  • Bandwidth (-3dB): 120kHz
  • Response Time: <5μs
  • Output: 1.65V ± 1.2V, corresponding to ±400A

Since the zero-current output voltage is 1.65V, can this change be implemented simply by modifying the following definitions?

// hw_75_300_core.h

#ifndef CURRENT_AMP_GAIN
#define CURRENT_AMP_GAIN 1
#endif

Attachments

 

21319.png

753000.png

 

IMG_20250718_114538.jpg