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BQ25618: BQ25618-Host send a I2C command of enter ship mode in the duration of battery FET reset process

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Prodigy 20 points
Part Number: BQ25618


Hi Ti engineer,

I have a quesiton on BQ25618 battery FET reset process as described on title blank. Pls kindly help take a look.

What would be happened when host sending a I2C command (enter ship mode) in the duration of T qon_rst lasting period. Does charger Q4 swithed off immediately and wouldn't response battery FET reset process or charger still running battery FET reset process ? 

Above scenario is under VBUS 5V disconnection , only VBAT connected

Thanks for your support ~

  • 0
    TI__Mastermind 38955 points

    您好

    已经收到了您的案例，调查需要些时间，感谢您的耐心等待

  • 0
    TI__Mastermind 38955 points

    您好

    您是在询问用于退出低功耗船用模式的复位控制功能，还是全系统复位功能？

  • 0
    Prodigy 20 points

    Hi Daniel

    在没有Vbus 5V的时候，正常VBAT放电模式下，如果手动拉低QON，charger芯片应该会开始跑battery FET复位进程，到达一定时间后Q4这个FET会关掉后再打开，完成一次FET RESET流程。我的问题就是在手动拉低QON到Q4开始关闭中间这一段时间内，如果主控那面发出要charger进shipmode的I2C命令过来，charger会怎么处理？直接进shipmode就不会再响应battery FET reset进程了吗？还是说先进shipmode后，后面依旧再跑FET RESET进程，到达时间执行Q4 off后再on，完成一个power recycling？

  • 0 回复 ? ?
    TI__Mastermind 38955 points

    您好

    We are working on it.

    BTW, could you please help to provide the project information below?

    Customer Name

    Device

    Total Amt (Ku)

    Project Name / ID

    Competition Device

    End Equipment

    Production Start Date

     

     

     

     

     

     

     
  • 0
    Prodigy 20 points

    Hi Ti，

    I am from an ODM corp. Currently we are evaluating a new project of recording pen than need to support 5V boost output. In the past few years , I used BQ25618 in other project and based on the new RFP from our customer , I found that I cannot ignore this potential risk . That's the reason I brought up this case to you.