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TPS5430反转电压输出问题

Other Parts Discussed in Thread: TPS5430

根据slvr866文档原理图,设计12V输入,-12V/100mA输出,电路原理图见附件:

输入12V/1A电源被拉低至4.96V,输出端-2.05V,空载,有一片TPS5430被烧毁,请问如何解决?