I making BLDC motor controller using the G431 and the IHM008 hardware. The supply power is 24V. I want to know the feedback current for motor output power. Anyone tell me the feedback current ADC value for the motor current ampere?

[DLee.20]

..

[Cristiana SCARAMEL]

Hello @Community member​ and welcome to the ST Community.

Considering FOC control algorithm and hardware setting, as reported in the X-NUCLEO-IHM08M1 user manual UM1996:

• Amplifying network gain: 5.18
• Shunt resistor 0.010 ohm

The OpAmp output is biased to about 1.65 V,

how you can calculate, e.g. for shunt1 signal: R2/(R1+R2) x (1 + R5/R4)

I hope this post can help you; if so, consider to mark it as best answer by clicking the label "Select as Best".