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你好，在用TPS54231上电后输出电压为0.11V，该方案之前用过没问题，这次是手工焊接的，不知道是哪里没焊好，能否帮忙看看，谢谢，原理图附在下面。
Hi
用热风枪吹一下芯片，如果还是不行，换上以前的芯片看看？
