Part Number:DRV8872
Hi Guys,
We are using DRV8872 in our design. We selected this part because of the fault signal feature but it is not working as we thought.
I have to set the current limit of ~1.2A using ISEN pin and I am expecting a fault signal whenever the current hits this limit. But there is no change in fault signal state when it reaches the current limit.
But I was able to see Fault signal on when I remove the current limiting and let it run with the max current of 3.6A since min Iocp is set to 3.7A.
I would expect the Iocp to match current limiting values so that we can make use of fault feature completely. Else whenever there is a some current limiting less than 3.6A then there is no way we could enter OCP condition.
Could you guys clarify this for me ASAP?
Regards,
Ibram