Post Go back to editing

LT8390 Short test issue


I'm testing output short test. ( output latch off mode )

When output is shorted, Voltage of output goes down to 0V immediately but Current takes around 37ms to 0A.

1) blue : current of output

2) green : voltage of output

3) red : Mosfet gate voltage of TG1(HIGH SIDE FET OF INPUT)

So i checked Demo board and the result is almost same.

Q1. why is the output current doesn't cut off  immediately ?

Q2. If voltage is zero and current is still remaining, does it give damages to ECUs connected to the output?

plz check.