STM32G4 ADC1/2 Dual Mode Reading

[batuhanky]

Hello community,

I am using STM32G474 for my FOC application and I am a bit confused about the ADC modes.

Since the G4 series has a wide range of ADC modes, which ADC mode is best for 2 or 3 phase current sensing in FOC applications?

Is the "dual injected simultaneous mode only" suitable for this purpose?

I'm using the ADC1_IN2, ADC2_IN1 and ADC3_IN5 channels to sense the current.

If I want to sense all 3 phases current, what should I do? "Independent mode+injected conversion" combination enough for it?

I can use a FOC library or MCSDK, but I need to learn the logic behind this task.

Thanks for any help.

 

Best Regards

[GMA]

Hello @batuhanky,

Refer to the Current sampling chapter of the MCSDK user manual available through Workbench tool > About > Documentations > Documentation > User manual tab. Three-shunt, two-current sensing, and three-current sensing (HSO) topologies are described.
Refer to the 21 Analog-to-digital converters (ADC) chapter of the STM32G4 Reference Manual for ADC IP description.