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TPS2121 使用问题

Other Parts Discussed in Thread: TPS2121

TPS2121 双输入 一个是3.8v 一个是4.2v 切换电压设置为3.3v 当3.8v 电压低于3.3v时切换到4.2v 

但是 发现切换的时候 每次都有一个 最低电压2.65v 左右,这个电压导致我后面的总电源管理芯片对主控进行复位,有什么办法把这个切换的最低电压2.65v 提高