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BQ40Z50进入不了SLEEP状态,求解!

Other Parts Discussed in Thread: BQ40Z50

BQ40Z50进入不了SLEEP状态,求解!SLEEP已经勾选,断掉外部通讯后,不能进入SLEEP.

勾选IN_SYSTEM_SLEEP,断开通讯后。才能进入休眠。、

  • 在不断开通讯的情况下如果需要进入sleep mode需要使能 IN_SYSTEM_SLEEP. 请参考http://www.ti.com.cn/cn/lit/ug/sluua43a/sluua43a.pdf P43.

  • PRES接输出地,打开Settings;DA  confjguration  ;SLEEP,断开通讯后,电流为0,但是不能进入SLEEP.自耗电流一直300uA.是什么情况

  • BQ40Z50进入sleep模式,跟SMBus状态有关,详细条件如下:

    SMBus low for Bus Timeout(1) if
    [IN_SYSTEM_SLEEP] = 0, or no communication
    for Bus Timeout if [IN_SYSTEM_SLEEP] = 1
    AND
    DA Config[SLEEP] = 1(1) AND
    |Current()| ≤ Sleep Current AND
    Voltage Time > 0 AND
    (OperationStatus()[PRES] = 0 OR
    DA Config[NR] = 1) AND
    OperationStatus()[SDM] = 0 AND
    No PFAlert() bits set AND(2)
    No PFStatus() bits set AND
    No SafetyAlert() bits set AND(2)
    No [AOLD], [AOLDL], [ASCC], [ASCCL], [ASCD],
    [ASCDL] set in SafetyStatus()