Part Number: UCC27524A
HI team,
I have a problem with UCC27524A. My customer used UCC27524A as PFC MOS gate driver. When the server PSU was running, the UCC27524A was damage. The customer tested the damaged IC and found input pin was open to ground. And then the customer captured there is negative input voltage(over -5V) on input pin. The schematic and tested waveform are as below. The negative voltage of input pin indicated in datasheet can reach -5V. So what's the absolute maximum rating stand for (DC or AC)? How long will the IC be damaged after negative input voltage exceeding - 5V?
And one more question, when the customer tested output voltage of UCC27524A, there still has negative voltage（over -2V) in their system. So please help to evaluate the risks.
thanks very much.
best regards,
Sophia Yao