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BQ40Z50-R2: 芯片可以在检测到充电器的情况下自动开启mosfet么

zhennan li
Prodigy 50 points
Part Number: BQ40Z50-R2


你好：

1.有没有相关寄存器可以在检测到pack+存在电压后自动开启mosfet充电

2.NR = 1,EMSHUT_EN = 1, pres引脚外接开关可以频繁开关使用么。手册说是作为“Emergency Shutdown”使用

目前芯片采用的是R4固件

  • +1
    TI__Guru*** 130456 points

    您好

    1，SLEEPWKCHG (Bit 9): Enables the sleep wake charge feature

    2，可以的。

    For battery maintenance, the emergency shutdown feature enables a push button action connecting the SHUTDN pin to shut down an embedded battery pack system before removing the battery. A high-to-low transition of the SHUTDN pin signals the BQ40Z50-R2 to turn off the CHG and DSG FETs, disconnecting the power from the system to safely remove the battery pack. The CHG and DSG FETs can be turned on again by another high-to-low transition detected by the SHUTDN pin or when a data flash configurable timeout is reached.