LTC4368-1 Random shutdown occurs approximately 20 seconds after power on. The circuit is found below. I measure 400mV and 800mV at the OV and UV pins. The gate voltage measures ~11.28V across Gate and Vout.
I have set the resistor divider (using the datasheet's equation) OV to 36V & UV to 18V and the circuit is powered with a power supply at 28V. I am expecting a max of 200mA for my application.
Any ideas why this event is happening 20 seconds after power on?
I also tried back to back MOSFET configuration, as below: