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BQ25611D: Some questions about the D+/D- of BQ25611D?

2018
Expert 2630 points
Part Number: BQ25611D

Some questions about the D+/D- of BQ25611D?

1. When plugged into the 25ms of USB, what actions will the D+/D- of BQ25611D make?

2. If BQ25611D can be connected to D+/D- only after 25ms is inserted into the USB,

Then will the delay of 25ms affect the normal operation of BQ25611D?

3. When plugged into the USB, how long does BQ25611D need to occupy D+/D- (MAX)?

4. After the end of occupying the USB, will D+/D- still be used in the charging process (unplugged USB or software mandatory configuration)?

  • 0
    TI__Expert 5590 points

    BQ25611D builds in D+/D- detection. 25ms delay time on D+/D- may be tolerable after VBUS is inserted. After the detection is complete, D+/D- pin inputs are in high impedance mode. Suggest leave 1.5 second for the worst case detection to be complete. After the detection is complete, D+/D-  is not occupied any longer.