• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 880 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ25713: Complete schematic with minimum components.

Mateusz Kusmierz
Prodigy 20 points
Part Number: BQ25713
Other Parts Discussed in Thread: BQ25896, TPS63024

Hi.

We want to use BQ25713 to manage power on our board.
What we need chip to do:
-accept 5V input power from ac-dc wall adapter
-accept 3500mAh 3,7V flat Li-Po single cell battery 
-onboard buck-boost that will provide 3,3V stable output and min. 1A peak current output for powering our system (no matter what battery voltage is) 
-all settings, adjustments, limitations have to be set only via I2C
-provide measurements (battery voltage, battery current draw/charge)

Does this chip meet our requirements?
Can anybody tell me what external components and connections do I need to make to use this module in the way described above?

Thanks Matthew.

  • 0
    TI__Genius 16185 points

    Mtthew,

    All above your conditions BQ25713 can support besides providing 3.3V output.

    in your case, I may suggest BQ25896+TPS63024.

    BQ25896 can support below specification:

    accept 5V input power from ac-dc wall adapter

    -accept 3500mAh 3,7V flat Li-Po single cell battery

    -all settings, adjustments, limitations have to be set only via I2C

    -provide measurements (battery voltage, battery current draw/charge)

    TPS63024 can support below specification:

    -onboard buck-boost that will provide 3,3V stable output and min. 1A peak current output for powering our system (no matter what battery voltage is)

    As for schematic, you can download each components EVM board user guide.

    Thanks

  • 0 in reply to Paul Yeh
    Prodigy 20 points

    Thanks, but can you explain below:

    From your answer I assume that buck-boost converter is not built in BQ2571 ?

    So what buck-boost means in case of this chip?

    Regards

  • 0 in reply to Mateusz Kusmierz
    TI__Genius 16185 points
    Matthew,
    The buck-boost charger means this part can support input voltage range between 3.5V and 24V and 1cell~4cell battery voltage.
    During power up, the charger sets converter to buck, boost or buck-boost configuration based on input source and battery conditions. The charger automatically transits among buck, boost and buck-boost configuration.
    Ex: If your input voltage is 5V but 2cell battery (6V~8.4V) then BQ25713 will operate in boost configuration.
    Or if your input voltage range is from 5V to 12V and 2cell battery then chip will operate in boost, buck and buck-boost configuration based on different input and battery voltage situation.
    Thanks