Active Battery balancing during charge / Discharge cycles both ICs and papers

steve wenner

Other Parts Discussed in Thread: BQ25887, BQ76PL102, BQ78PL114

Good afternoon....

I am interested in finding out if TI has battery balancing silicon that actively (not looking to waste the energy through a resistor) controls battery charge on cells both during discharge and charge?

Thank you.

Steve

over 5 years ago

0 Ricardo over 5 years ago

TI__Genius 10385 points

Steve,

In terms of battery chargers with integrated cell balancing we offer bq25887. This is a 2S, host controlled (I2C), boost charger. Additionally, you can accomplish cell balancing externally by using a balancing IC from the battery gauge team. I will loop them in so they can offer their thoughts.

Thanks,

Ricardo

0 Taylor Vogt over 5 years ago in reply to Ricardo

TI__Genius 17370 points

Hi Steve,

Please find our active balancing solution here: http://www.ti.com/tool/EM1402EVM which comprises of a few TI parts. However, we are moving away from recommending active balancing and towards passive due to the reduced cost/complexity. Our bq79606A device supports integrated FETs for up to 150mA passive balancing and you could even use external FETs for much higher current.

Regards,

Taylor

0 steve wenner over 5 years ago in reply to Taylor Vogt

Expert 2355 points

Hi Taylor.....

Yes I am finding out that this active balancing is not straight forward at all......Does this imply then that you will be actively obsolescing things like the BQ78PL114 and BQ76PL102?

thanks

Steve

0 Roger Hwang over 5 years ago in reply to steve wenner

TI__Genius 10785 points

Hi Steve,

No, Taylor is only mentioning EM1402.

Roger

0 Roger Hwang over 5 years ago in reply to Roger Hwang

TI__Genius 10785 points

Hi Steve

I am going to close this thread and please let us know if you still have questions.

thanks

Roger

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Active Battery balancing during charge / Discharge cycles both ICs and papers