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BQ40Z50-R1芯片的CHG、DSG两引脚无电压输出

Other Parts Discussed in Thread: BQ40Z50

我遇到的现象是BQ40Z50通讯正常,就是MOS管打不开,控制脚没电压,当手动发打开充放电MOS指令,芯片引脚CHG=6V, DSG=0V,我手上有三块板子,都是同样的现象。

请TI的工程师们帮忙分析指点如何解决这个问题。谢谢!