• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 326 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.

BQ27426: Accuracy for Remaining Capacity

Shunsuke Nagata
Genius 13060 points
Part Number: BQ27426

Hi, team,

I heard the Remaining Capacity and SOC accuracy in bq27426 is 5%. Will the accuracy (5%) be effective  after QMAX_UP bit and RES_UP bit in Control() are set?

Regards,
Nagata.

  • 0
    TI__Guru* 76230 points
    Hi Nagata

    Yes, That is correct
    thanks
    Onyx
  • 0 in reply to Onyx Ahiakwo
    TI__Genius 13060 points

    Hi, Onyx -san,

    Could you please support below questions?

    1. What is difference between StateOfChargeUnfiltered and StateOfCharge? I guess StateOfChargeUnfiltered is calculated from raw value and StateOfCharge is calculated from valule using with digital-filter of unfilterd Remaining Cap and unfilterd FOC. Is my understanding correct?

    2. Is there guide line for reserve capaciy? Should user set the reserve capacity as 5%(accuracy) + x%(reserve capacity)?

    Regards,
    Nagata.

  • 0 in reply to Shunsuke Nagata
    TI__Guru* 76230 points

    Hi Nagata
    1. Yes that understanding is correct. Filtred SOC allows for a more user friendly experience such that the customer doesn't see Jumps in SOC due to temp change or load changes except it you hit empty or full charge

    2.That is user dependent. it depends on how much capacity your controller needs to perform a controlled shutdown. That should be your guidance.

    thanks

    Onyx