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如何让BQ25895完成充电后不再复位。

user5186876
Prodigy 150 points


我向0X09寄存器写入0x60值，关闭了升压模式，但我发现一旦充电完成，升压5.0V又再次开启。升压会导致电池无法长时间存放，会一直消耗电量。按照正常的寄存器配置我应该是关闭了BATFET full system reset enable。但我发现不起作用，这是为什么？

  • 0
    TI__Guru*** 130456 points
    您看一下QON的pin 脚说明
    BATFET enable/reset control input.
    When BATFET is in ship mode, a logic low of tSHIPMODE (typical 1sec) duration turns on BATFET to exit
    shipping mode. .
    When VBUS is not plugged-in, a logic low of tQON_RST (typical 10sec) duration resets SYS (system power) by
    turning BATFET off for tBATFET_RST (typical 0.3sec) and then re-enable BATFET to provide full system power
    reset.
    The pin contains an internal pull-up to maintain default high logic