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TPS61089 使能如何设置



使用TPS61089输入9V(实际10.25V)想升压输出12V1A,在使能EN端150K跟50K分压接入的时候,芯片冒烟。当把使能端和VCC连接到一起的时候,芯片也冒烟了,之后测得SW对地短路,芯片烧坏,请大神帮忙分析下原因?电路图和PCB图如下所示,