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TPS65146RGER调试出现一个问题!



TPS65146RGER调试其他电压都正常,只有一个VGHM不正常,输出20v,通过调节反馈电阻,无论怎么调节,都是输出20V,是不是买的这个芯片是坏的?

TPS65146RGER调试问题.pdf