I am using the DRV591 as a TEC controller and have two different configurations. One with an external clock (250kHz input for 500kHz clock) and one with an internal clock (also set to 500kHz). For the rest the circuits are the same. I am noticing a over-current FAULT triggering (and subsequent shut-down of the current) with the internal clock circuit. With the same levels of IN+ and IN- on the circuit with external clock no FAULT is triggered. It also appears that the shutdown is already occurring at around 2.5A instead of the 4A condition.
Am I missing something (i.e. is it possible to disable the response to the FAULT condition) or does the internal clock circuit introduce more sensitivity to overcurrent detection?
