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当DSG处于关断状态，PSDG处于开启状态，B+将通过预放MOS管进入DSG，导致一直耗电；电流如图所示。请问在DSG关断时，PSDG处于开启状态，如何避免此功耗？
请参考下面BQ769x2 常见问题解答中的2 控制 FET 常见问题解答章节：
www.ti.com.cn/.../zhcae26.pdf
