• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 64 subscribers
  • Views 528 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.

About BQ33100 Super Cap Gage with Stack Connect ing

March Jasper
Expert 2340 points
Other Parts Discussed in Thread: BQ33100

Hi  

I have one question for BQ33100.

We want to use  8 super cap with BQ33100, 

【Question 】

Can possible BQ33100 connect for Stacking ??  

For instance 

  No1  BQ33100   4 super Cap  +    No2 BQ33100   4 super Cap

 Total 8 super cap by Two BQ33100 stacking connect.

 Do you have some idea ?

Thanks and Regard

Jasper  (  Japan Disty ) 

  • 0
    TI__Expert 5090 points
    Hi Jasper,

    I'm sorry for the delay in responding - many of our team are out of office over the holidays, so it may take some extra time to address your question. I'm not too familiar with that device myself, but we'll have someone get back to you on this soon.

    Terry
  • 0 in reply to -Terry
    TI__Guru* 76230 points

    Hi Jasper,

    The bq33100 can support 2-9s caps. You need to operate the device in stack mode since you are using more than 5 caps which is the max the device can support in normal mode where it measures the voltages of each of the caps and is able to actively balance all 5. With an 8s configuration you will have to use passive balancing such as a resistor string.

    if you are trying to stack 2 bq33100, you will need a i2c multiplexer since the smbus address of the bq33100 is fixed to 16 so your host can read out data out of both to avoid bus collisions. Also  the charge fet and how/Which device(s) controls it will have to be thought through.

    thanks

    Onyx