Dear sir:
I found problem with following circuit when the initial current load is ~1A. current load is permanently connected at output.
When VOUT_EN is on, the vout is 4V which generate 1A on 4ohm load. The hiccup occurs as below image and voltage never goes up.
But if I connect the load after power up, the voltage output is normal.
Thank you!
Dear John:
It did enters hiccup protection mode with ~10ms period. I did current probe at inductor (L6) right end and the waveform as 1st image. It seems inductor current is ~10A which is over the current limit we set (9A). I took away the loads and I found in light load, the voltage goes up with staircase as second picture. I feel strange that why if I turn on first with no load and then apply load up to 5A, there's no any current protection problem.
