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如图：
使用固定5.0输出的片子，该芯片没有输出5.0V 芯片没有震荡，RT悬空了也还是没输出。 该片子不是隔离输出？万用表测VOUT一直是11V。 原理图如下
建议用Webench根据你的输如输出电压和电流生成的电源方案进行比对。
