currently, we are evaluating first PCBA of or design, in which the DRV8316R is used. Unfortunatly, we are experiencing some issues with the diver and do not understand the reason for it's behaviour.
1) Everytime we start up the driver, the status register 1 bit 7 (OTW bit) gets triggered. This will be cleared, if we set DRV_OFF to low after bootup but for series, it seems to be unsafe to enable a device, which shows OT flag. Why is the OT triggered, as there is no OT situation? How can we avoid this behavior?
2) Status register 2 bit 3 (VCP_UV) is triggered. As the supply voltage of the system is 24V (additional diode in series => 23.3V), the charge pump will deploy a higher voltage. I meassured the voltage @ Pin8 (CP output), which is ~28.5, which seems in an acceptable range. Could you confirm, that this is ok? Why is the flag trigged? Could you please tell, if there is a mistake in the design?