Hi @flashgift80
I have a little bit of experience with the DRV8311 chip that you picked out. I have my own board and I also had some feed back on another board by Harry_Brenton. I think you might have an issue with the sleep pin on the DRV8311. If you want to used the LDO on the DRV8311 you need to wake up the chip from sleep first. The chip will not turn on the LDO unless it receives a signal on the sleep pin. In your schematic it looks like VM will go into the DRV8311 chip and then nothing will happen since the sleep pin is low. You’ll need to decide how to get the DRV8311 to wake up to supply power to the STM32. Hope this helps
