I am using the ADUM3223 with EPC2012C devices switching at 1MHz.
When rising input voltage of the converter leg above around 13V, the high side driver blanks the output for 200us periodically ( period of kHz). Output pulses are down from 5.0 to around 0. something volts , causing the mosfet to not turn on and the inverter to fail.
I populated another board, and after some OK running time the ADUM failed in similar manner.
But in open loop tests, i have kept the system running OK for days.
Any idea about any protection / issue which might occurr ? or failure mode of the device?