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BQ24160: BQ24160 USB usage

Balint Magyar
Prodigy 10 points
Part Number: BQ24160
Other Parts Discussed in Thread: BQ25601D, BQ25890

Hi,

I'd like to use BQ24160 in an application, where I would like to use USB for fast charging trough BQ24160, and use the USB for communication too. How can I connect the data lines? Use an USB hub IC, one port for BQ24160, one for my application, or I can just parallel the two lines (charge + data)? 

Thanks in advance!

  • 0
    TI__Guru**** 165766 points
    Hi Balint,

    The D+/D- pins are intended to be directly connected to the USB D+/D- lines. After power up, the BQ24160 D+D- pins go HiZ unless you force a detection and therefore, do not interfere with other communication on the lines. Keep in mind, the BQ24160 only performs primary detection per USB BC1.2 spec, meaning it can only set the input current to 100mA for SDP or 1.5A for all other ports/adapters. Later, single input chargers, like BQ25890 and BQ25601D have much more comprehensive input power detection algorithms.

    Regards,
    Jeff