Hello,
Does the DVDD pin of DRV8873S-Q1 have an internal protection diode with other pins? If the DVDD pin has a diode internally to the VM pin, for example, a current could flow into the VM from the DVDD when the DVDD voltage is higher than the VM. If the DVDD has an internal diode with other pins, a current could flow into the device when the DVDD voltage is higher than that pin.
One more question, Figure 9 in the data sheet shows that some circuits are tied to nSLEEP internally. Is it a typo? If not, I guess the circuits draw an operating current from nSLEEP pin. Is it correct?
Best regards,
Shinichi Yokota