I would like to know how the current limit works during normal and startup operation. In one of my applications I have a 1.2V output , Lout=1uH, Fsw=2.2MHz in FPWM mode and with slew rate set at 10mV/us. With this slew rate, the expected output rise time is 120us and I'm getting very close reading. I recently realized that there are more output capacitance on the board for a total of 958uF. With this output capacitance and 120us rise time the charging output current should be ~ 9.6A. I would think this pulse current during power up should trigger the current limit setting of 4.5A but the output seems to power up regardless. I have other rails that have a similar situation and I would like to understand the Ilimit function during power up.
Thanks,
Alek