• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 141 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.

Gauging Device Suggestion

Jack Shen2
Expert 4435 points
Other Parts Discussed in Thread: BQ34210-Q1, BQ34Z100-G1

Dear

I am looking for a battery gauging device. Here are the requirement:

1. battery gauging only, no protection needed, just need to do the coulomb counting

2. Sensor resistor: 1 mOhm

3. Able to measure up to 100A

I found the closest device: bq34210, but I would like to check if there is any other option. Moreover, what's the resolution of the current sensing for bq34210? 

Thank you. 

  • 0
    TI__Intellectual 2025 points

    Hi Jack,

    What is the # series cell count for your application? BQ34210-Q1 is an automotive qual gauge. Please keep in mind the ADC of our coulomb counter has a resolution of 16 bits as shown in datasheet, so max current value read by gauge is 32767 mA. I recommend you look at BQ34z100-G1 instead, section 7.3.12 of the datasheet. You will need to use scaling for supporting above 32767 mA due to gauge resolution. For further question regarding scaling feature, please submit a separate thread under that device.

    Thanks!

    Rushi