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TPS54360DDAR直接输入60V烧芯片问题。

Other Parts Discussed in Thread: TPS54331

TPS54360DDAR在应用于60V输入,3.3V输出,当输入从12V往上升的时候,输入可以达到60V,电路无异常,但如果直接接入60VDC端子插入,则芯片烧掉了,测量芯片的VIN与GND,电阻只有5欧姆左右,VIN与SW之间只有1欧姆以下。同时3.3V后面也短路烧掉了一个芯片。

原理图如下,PCB是用原来的TPS54331的PCB设计,请问这种情况如何分析?