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BQ25756: BQ25756

Munna
Prodigy 10 points
Other Parts Discussed in Thread: BQ25750, BQ25758, BQ25756

  • 0
    TI__Mastermind 32355 points

    Hello Atharva,

    1. You might want to look into the BQ25750 for this application. You can use the auto reverse mode to power the system load when VAC is removed. You'll need to remove the BATFETs if using the BQ25750.

    2. Yes, it is possible to charge the battery from a 60V supply. To set the battery charge voltage, you'll need to adjust the FB feedback resistors (R64 on the EVM). If you need a wider range of output voltage settings, you can use the BQ25758. The BQ25758 is a DC-DC converter that can be controlled by I2C. The BQ25758 has constant voltage and constant current control allowing the BQ25758 is also charge batteries.

    3. Yes, it is possible to change the IOUT current in both modes. For the BQ25756/BQ25750, it is only possible to change the reverse mode voltage. The output voltage can only be changed by a very small amount because the feedback voltage is being adjusted.

    The BQ25758 can adjust the reverse voltage and output voltage across their full range. IOUT is adjustable in both modes as well.

    Best Regards,
    Ethan Galloway