TPS2121: Recovery from overcurrent limit, output capacitor limit

Hi Dice,

1. How does the system recover after the overcurrent protection is activated?
Will it recover when the overcurrent disappears?
I would like to know information such as the time it takes to recover.

When current falls below current limit device will exit current limit within few us.

2. There doesn't seem to be any particular limit stated for the capacitance of the capacitor after the output VOUT, but are there any limits?

It is expected that switching will occur under a heavy load.

Therefore, it is expected that about 1000uF will be required for VOUT.

Just make sure you choose ss pin cap such that device is able to power up 1mf cap without hitting thermal shutdown. You will need high ss pin cap.

Regards 

Kunal Goel

Is the intention to increase the size of the capacitor on the SS pin to lengthen the slow start time and charge the 1000uF output capacitor?

Yes. We want to slow down startup to decrease current to prevent thermal shutdown.