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Original question:

BQ24295 charger : AC adapter detection

BQ24295: How to setup into Non-standard Adapter 2A

Hai Doan76
Prodigy 180 points
Part Number: BQ24295

Hi TI experts

I'd like to setup the BQ24295 into Non-standard Adapter 2A. There will be no external connection for USB D+/D-. Just 5V/2A input into VBUS pin.
Is it correct that I can setup as below:
- D+ pin to 1.2V with bias resistor network, for example 4.7k ohm to VBUS pin (5V input), and 1.5k ohm to GND
- D- pin to float

Thanks.

  • 0
    TI__Expert 8230 points

    Hi Hai,

    This should work, assuming your VBUS  voltage is within the typical USB VBUS limits (4.5V - 5.5V), the voltage range at D+ using that resistor divider would be 1.09V-1.33V, which satisfies the conditions of table 3. 

    You can also always modify the input current limit over I2C after the device initializes.