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BQ24192 VSYS电压过低无法启动问题



当只接电池Vbat 4.2V供电时,Vsw和Vsys均是4.3v,此时可以正常启动主板。

但是只接DC ADPTER Vbus 5V时,Vsw为5V,Vsys只有1.8v左右,此时无法启动主板。为什么Vsys电压如此低?是哪里出了问题呢?