This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LM27403: LM27403 10ms shutdown when load > 10A

Part Number: LM27403

Trying to figure out whats causing a weird 10ms shutdown of the buck when load crosses 10A or so. Buck works fine with loads under 10A, but as soon as load exceeds that it shutdowns for 10ms exactly, then restarts.

I doubt Overcurrent protection is kicking in, since I have OCP set at 40A, even in a bad implementation I doubt that would be kicking in at 10A. OTP is also set at 105C and the area of the inductor is at 25c at startup so I doubt this is the issue either.

Either way I would like to disable both OCP and OTP to rule out those as the issue. I know OTP can be disabled by shorting both D+/- Pins, but how would I do this for OCP (or at least configure the pins in a way that OCP set point is near infinity).