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TPS65150不工作



您好。我做了一块板卡,用到TPS65150RGE。5V供电,电路与DATASHEET上基本一致。原本输出为12V,20V,-5V。工作正常。后来修改了配置电阻,设定输出为8V,22.6V,-6.4V。电路不能工作。测量发现,REF,CS等信号均无输出。请问为什么?