NCP5388 is one of the "evil" pwm ,not many can manage to pass over his OVP
FB is pin19 , at ~ 1.3v ocp will trigger , if you lowering in half the ressistance between ILIM (pin 12)and ROSC(pin12) you will earn another ~50mv , till OVP will trigger ...and game is over!
when you see NCP on the card´s zombified them quickly
In the datasheet for the NCP5388 it says that the ILIM pin:
"Over current shutdown threshold. To program the shutdown threshold, connect this pin to the ROSC pin via a resistor divider as shown in the Applications Schematics. To disable the over current feature connect this pin directly to the ROSC pin. To guarantee correct operation, this pin should only be connected to the voltage generated by the ROSC pin – do not connect this pin to any externally generated voltages."
So if you short ILIM(pin 13) to ROSC(pin 12) it should disable OCP
Here's the datasheet:
On the topic of OVP it says:
"The OVP circuit monitors the output of DIFFOUT. If the DIFFOUT signal reaches 180 mV above the nominal 1.3 V offset the OVP will trip. The DIFFOUT signal is the difference between the output voltage and the DAC voltage plus the 1.3 V internal offset. This results in the OVP tracking the DAC voltage even during a dynamic change in the VID setting during operation."