My appliance is a DC/DC converter 7-36V IN and variable 24-52V OUT 1A max current. Only under certain conditions they experience starting trouble.
In this condition the swicthing starting, but after 1 second stops for overcurrent protecntion. Every 4 seconds tryes to start.
If exclude the PWM Vout control, and fixing reference with resistive net, the switching always starts.
PWM is 48,24kHz 3V with 69,13% of duty-cycle.