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TPS2388: Chip damaged after surge testing

Part Number: TPS2388
Other Parts Discussed in Thread: TPS23861

Hi,

TPS2388 was damaged after 4KV surge testing. This testing inject surge voltage at the pin RJ45 connector, even though there are TVSs on each pin, but still find VDD pin damaged.

Could TI provide application note about "How to improve the perfoamce in surge testing"?

Thank you.

C.T.