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BQ76952: Use Active cell Balancing with BQ76952

Hardik Jani
Prodigy 60 points
Part Number: BQ76952
Other Parts Discussed in Thread: EMB1428Q, BQ79616

Hello Folks

We will plan to use Active cell balancing technique with BQ76952.

Can we use Active cell balancing with BQ76952 16S 40A 60A and 100A design? currently we used to passive cell balancing.

Please share useful application notes 

Kindly offer your interesting comments.

Thank you in advance.

 

  • 0
    TI__Expert 4085 points

    Dear Hardik,

    The BQ76952 device does not currently support active cell balancing, only passive cell balancing. If you wish to do active cell balancing, it might be worthwhile to look into a second chip to handle that aspect like the EMB1428Q or another chip like it..

    Best,

    Asher Nederveld

  • 0 in reply to Asher Nederveld
    Prodigy 60 points

    Hello Asher 

    Thank you so much for your intelligent comments.
    Please share the supporting documentation for this chip as you mention and use an EMB1428Q chip in 16S cell balancing. 
    As it continues to be in the stage of development, do me now.
    Should you have any questions, reach out to me.

    Hardik Jani  

  • 0 in reply to Hardik Jani
    TI__Expert 4085 points

    Dear Hardik,

    There is not any official documentation showing the BQ76952 with the EMB1428Q chip. However, it would be worthwhile for you to look at the Active Chipset Reference Design Guide for the chip. It will help guide you on ways to design with the EMB1428Q. Further, reference designs for using the BQ76952 can be found here: https://www.ti.com/product/BQ76952#reference-designs.

    Best,

    Asher Nederveld

  • 0 in reply to Asher Nederveld
    Prodigy 40 points

    Hello Asher,

    I intend to work with a BQ79616, which passively balances the cells, but the balancing current limit (240 mA) is too low for my use. Because of this, I would like to use a balancing method that allows me to balance with a higher current. As EMB1428Q requires external FETs, that I could choose according to my requeriments, do you think that I could use this chip as well?

    Best regards,

    Guilherme Pissaia

  • 0 in reply to Guilherme Pissaia
    TI__Expert 4085 points

    Dear Guilherme,

    Since your question is for the BQ79616, I would recommend creating a new E2E thread asking about it tagged with the 616. This is for the ease of finding answers to this type of question for future users. It would be best to break it up into one thread about the BQ76952 and one thread about the BQ79616 as most users will first and foremost sort through this forum by their part number. I am not as much of an expert on the BQ79616 as I am on the BQ76952 so by creating a new thread, you should also get a better answer than I could provide for that chip. I hope this helps!

    Best,

    Asher Nederveld