I have used ADuM3201 for basic interface isolation.
I made a mistake when I was testing the board in the field.
So that the overvoltage stress had been appeared in second side.
Then, the ADuM3201 was failure, the pin6 had a special output.
The pin3 input was whatever high or low, the pin6 of ADuM3201 had a fixed continuous 1us width pulse output.
I think the Watchdog circuit has been damaged, is it correct?
I think the ADuM3201 is a good part.
I just want to know that how about the failure happens, and what need I do in this status?
Add some devices for protection?