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HK_it
HK_it
Associate II
December 27, 2019
Question

Inline current sensing problem for ST mcsdk ?

  • December 27, 2019
  • 4 replies
  • 2073 views

I try to drive (FOC) BLDC motor with STM32G474RE MCU. I use a custom board. I use INA240A1 for inline current sense. Can I use 3 shunt inline current sense method for ST mcsdk ? In STs evaluation boards typically low side shunt resistors are used for current sensing. But I use inline current sense method. What changes should I do in software?

0690X00000BuyaKQAR.png

This topic has been closed for replies.

4 replies

Laurent Ca...
Laurent Ca...
Senior III
September 11, 2020

Dear byHK

Do you have still this problem to solve?

Best regards

Laurent Ca...

HK_it
HK_itAuthor
Associate II
September 11, 2020

I solved this problem. Thanks for answering!

Laurent Ca...
Laurent Ca...
Senior III
September 22, 2020

Dear 

OK. I consider this post closed.

Do not hesitate to answer if it is not.

Best regards

Laurent Ca...

ALedi.1
ALedi.1
Associate III
July 21, 2021

Can you tell us how you fixed the problem? I have the same problem with INA240A1, in the workbench you see the topology is only lowside shunts. Is there a possibility to change the measurement to highside/inline current sensing? Also the output of the INA240 is VDD/2 when no current is measured, how do I incorporate this into my code? I would be happy for any help!

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