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Graduate
September 17, 2022
Question

STM32H750_DISCO power

  • September 17, 2022
  • 2 replies
  • 717 views

The file en.MB1381-H750XB-B02_Schematic.pdf states that H750XB only supports LDO mode, then SMPS should be OFF, as in the below figure:

0693W00000Svbs1QAB.jpg 

The schematic file is different as in the below figure:

0693W00000SvbsLQAR.jpg 

My question is the schematic below would cause any problems:

0693W00000SvbsVQAR.jpg 

Best Regards

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    2 replies

    Graduate II
    September 17, 2022

    Connecting the SMPS power pins directly to ground doesn't seem appropriate. What does the datasheet suggest?​

    ksale.1Author
    Graduate
    September 18, 2022

    Hi @Community member​ , I couldn't find relevant info in the datasheet, but the file "en.STM32H7-System-Power_control_PWR.pdf" from ST slide 6 details supply configuration as below:

    0693W00000SvdsmQAB.png