Other Parts Discussed in Thread: LM25149-Q1
Hi TI engineer,
We found 3 boards’ load switch damage which is after LM5140 5V OUTPUT in our project. Each board has two load switch ,both damage. They are low impedance in IN pin.
Other customer use this solution also have this issue. They tested about 7V in LM5140 output.
We think may LM5140 output overvoltage made the load switch damage. But we supply to load switch directly,it was damaged until 8.1V .Its spec is7V max.
And transient test from 10A-0A in 2us,the overshoot is about 5.2V far less than 8.1V.
Attachment is our SCH,please help us review. When will it occur overvoltage?
By the way,we can't reappear this issue .