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BQ24160 question

Roger Ding
Intellectual 1720 points
Other Parts Discussed in Thread: BQ24160

For bq24160, it can detect the connection is SDP(USB port) or CDP/DCP(dedicated charger).

And automatic switch at 100mA or 1.5A. It describes as page 21 of datasheet.

But customer can’t find register to tell them the connection type(SDP or CDP/DCP), this means they can only charge at 100mA when a SDP is detected.

This will take a very long time to charge the battery.

 please give us how we could acquire input style by D+ and D-? there is no register that is set by  input style of D+ and D-. customer want to change USB current from 100mA to 500mA after detect that input is USB port .

  • 0
    TI__Guru**** 166876 points

    The D+/D- lines are automatically read and set the USB current limit ionly in DEFAULT mode.

    Once you are in HOST (i.e., communicating with I2C) mode, you can force the IC to read the D+/D- lines using Bit 0 of the Control/Battery Voltage Register (memory location 3).  Then you can read B4-B6 of the Control Register (memory location 3)  for the USB Current Limit setting of either 100mA or 1500mA.

  • 0 in reply to Jeff F
    TI__Intellectual 1720 points

    Customer will use adaptor or USB for charger IC input, but they will never be connected to in port of bq24160, all input (USB or adaptor) need be connected USB port of bq24160.

    so customer need know what is connected to USB port of bq24160.

    Question is :  they must set at DEFAULT mode when they use APSD(automatic power source detection).

     

    Then anytime they read the register of memory location 3 (B4-B6). It should be 000.

     

    So they don’t know the input power type. The charge from SPD is still very slow.

    and they give me a example of other IC, i will send you the mail, maybe you could easy to know the customer requirement.

    thanks!