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LMR16010和LMR16006芯片一接50V输入芯片就烧掉

Other Parts Discussed in Thread: LMR16010, LMR16006, LM5576, LMR14030

最近使用了LMR16010和LMR16006芯片做DC-DC降压电路,输入端是蓄电池,电压48~54V。电路是参考的芯片手册和设计工具的,但一上电都会出现芯片烧掉。不管有无负载,而且两款芯片都是这现象。调试了几天烧了十几块芯片,后面在输入端加了一个可恢复保险就不会烧芯片了。请TI的工程师回复一下什么原因?