Hi
Our customer evaluate TPS53219A on their board. They found a negative surge at SW pin which is -6.5V at room temp.
The efficiency goes down and the operation was stopped when they increase the temperature within the ratings.
(They have not measured the negative surge at high temperature.)
On the other hand,they fixed the negative surge then the abnormal phenomenon did not occurred.
I have a question for this issue.
Is there any possibility of thermal shutdown and other protection function to malfunction if the negative surge is large.
Regards,
Koji Hamamoto