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BQ24133 3节电池串联 后级开关打开后无法充电



      工程师好,目前我们有一便携式电子设备,采用3块锂离子电池,15V电源适配器,使用BQ24133作为充电管理芯片,后级电路中设置一个开关作为设备电源开关。当开关处于关闭状态时,设备不工作,电池能够正常充电,设备运行正常。当电池电量较多时,打开开关后,充电指示灯闪烁,充电不正常,此时拔下15V电源插头,重新插上后,充电正常,指示灯常亮。当电池电量较少时,打开开关后,充电不正常,插拔一次15V电源插头,仍显示充电不正常。试验中发现开关打开瞬间,15V电源被瞬间拉低又马上恢复。想请教一下ti工程师,是否遇到过类似问题,如何解决?