• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 204 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.

BQ25723: Connection few BQ25723

Pavel Martemyanov
Prodigy 20 points
Part Number: BQ25723 
Hello, can you tell me if it is possible to connect 3 BQ25723 to one battery of 4S Li-on configuration?
All BQ25723 work in OTG mode. The first BQ25723 in OTG mode generates a voltage of 3.3V current 8A, the second BQ25723 in OTG mode generates a voltage of 5V current 8A, the third BQ25723 in OTG mode generates a voltage of 12V current 8A
 
  • +1
    TI__Genius 11385 points

    Hi Pavel,

    Using a single battery to power 3 chargers in OTG mode is ok. You can imagine it as just a voltage supply (battery) going through 3 separate regulators as long as the 3 outputs are on different rails.

    Are you also attempting to use the 3 chargers to charge one battery at the same time? You will need to do more there and make sure the chargers terminate charging before each other so the voltage loop doesn't fight against each other. Extensive testing is highly recommended for this application.

    Here is a tech note on dual chargers. Not everything applies here because the architecture of the described parts are different, but it should still be helpful. Key page is page 2.

    https://www.ti.com/lit/an/slyt651/slyt651.pdf?ts=1633642297020&ref_url=https%253A%252F%252Fwww.google.com%252F 

    Thanks and I hope this helps,

    Peng

    *Please press "This Resolved My Issue" on the thread if my answer is satisfactory