TPS23523: questions on brown out test

Hi Given,

Following events are occurring this captured waveform,

1) Input goes off,

2) Hot Swap controller turns off,

3) Output capacitor starts discharging a bit to the load, 

4) Input again comes up after a short interval,

5) Input current rises to a high value very quickly, triggers the short-circuit protection for TPS23523,

6) It enters into then current limit with high V_DS,

7) GATE starts increasing, the controller comes out of current limit and normal operation presumes. 

Hi Given,

It's not doing soft-start as output voltage is not complete discharged. During this very short interval of input interruption, the output capacitor discharges only a bit to support the load not completely. When again the input comes up, the output capacitor suddenly gets charged to the input voltage level by drawing a large amount of current for a short interval. Hot swap controller treats this as short-circuit.