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Is there a BQ24650 simulation model?

Daniel Correia
Prodigy 30 points
Other Parts Discussed in Thread: BQ24650

Hello, 

Is there a BQ24650 simulation model that I could download?

And, If I use that IC to charge multiple cells, would it be a balanced charge? If not, could someone please tell me about another IC, if it has an evaluation module it'd be better!

Thanks

  • 0
    TI__Genius 11480 points

    Hi Daniel,

    If you  are asking for a SPICE model for the bq24650, it unfortunately does not exist.

    As far as I know, none of our battery charging  IC's have an integrated gauge/AFE for cell balancing. I believe (don't quote me on this, though- i'm not entirely sure), that  there is one in the works.

  • 0 in reply to David Wiest Jr
    Prodigy 30 points
    Hi David,

    Thanks for the answer.

    OK, I'm worried about the battery life, because I think that Li-Polymer batteries need to be balanced, right?

    I want to build a solar charger for Li-Po batteries, its possible to charge 4 Li-Po cells in series, in parallel with another 4 cells in series, with the BQ24650?

    If not, could you advise me with another charger IC (preferably one with an evaluation module).

    Thanks
  • 0 in reply to Daniel Correia
    TI__Genius 11480 points
    Hi Daniel,

    You are correct - balancing the Li-Po's should give you longer battery life. If you go over to the gauge forum, the guys and gals over there should be able to give you a much better recommendation than I would be able too. The gauge is typically an IC and some supporting components "between" the charger and battery.

    The bq24650 is more than capable of charging 4S4P Li-Po, as long as the charge current is under 10A.

    A word of caution on solar - make sure you have more than enough solar capacity. A lot of people try to squeak by with "just enough" with the quoted short circuit current and open circuit voltage. If it won't break the bank, give yourself some headroom to work with in the shade.