I have a rail defined as voltage but monitoring current.
There is a large surge current charging the capacitors when the rail is turned on.
The voltage on the current monitoring rail goes way above the OV limit, but for less than 200 uSec.
I have set the Voltage Fault Max Glitch Time to 0.8 msec, and set the Vout Over Voltage Glitch filter to ON, and response to Shut down immediately, do not restart.
I find that when I turn the rail on, it turns off again with an OV fault within 500 usec. this is less time than the glitch filter.
Am I somehow misunderstanding how the glitch filter is supposed to work? Shouldn't the UCD90120A ignore voltage excursions above the limit for less than the voltage fault max glitch time?