• State TI Thinks Resolved
  • +1 person also asked this people also asked this
  • Locked Locked
  • Replies 5 replies
  • Answers 2 answers
  • Subscribers 65 subscribers
  • Views 477 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.

Original question:

BQ34Z100EVM: -R2 Firmware Energy Scale

BQ34Z100EVM: -R2 T rise, Energy Scale and Design Energy Parameters

Fahad Akhtar
Prodigy 210 points
Part Number: BQ34Z100EVM
Other Parts Discussed in Thread: BQ34Z100-G1

I have (3) related questions for -r2 firmware

1. TRM Table 3-4 asks to scale T rise by Energy Scale. If value of my energy scale is 45, what should be the value of T rise assuming a default unscaled default value of 20? (is it 20/45 but thats decimal or is it 20*45)

2. If my Load mode setting is set to current mode, can you please confirm that energy scale factor of 45, which seems high, will not have impact on gauge accuracy (my current scale is only 9) ?

3. TRM Table 3-4 asks to scale Design Energy by Energy Scale. However, Design Energy parameter is no more visible in -R2 firmware? Can I just neglect it?

Best regards

Fahad

  • 0
    TI__Genius 12215 points

    1. Some of the content in the table is copied from the one for bq34z100-G1, but the information in the last row for T Rise is not correct, the T Rise is actually related to the CurrScale instead of EnergyScale(), T Rise value in dataflash should be the product of actual T Rise and CurrScale if the reported current is scaled down by CurrScale.
    2. Energy Scale Factor shall affect read value of energy related data, i.e., power or energy, if energy factor is greater than 1, then the reading of these value shall be multiplied by EnergyScale()
    3. The DesignEnergy has been changed to be hidden parameters, this needs to change the bqz file, please wait the new bqz file so that you can edit this data.

  • 0 in reply to Steven Yao
    Prodigy 210 points

    Steven

    Thanks for the response. I have follow up questions:

    1. When is TI releasing that bqz file?

    2. How critical is this (Design Energy) setting? Can I still test the -r2 firmware without updating this parameter?

    3. Are there other parameters that are important but not yet accessible (and require this new bqz file)?

    TI should have released everything associated with this firmware in one go. It is not ideal to do a piecemeal release. I am also finding many errors in the -r2 TRM

    Best regards

    Fahad

  • 0 in reply to Fahad Akhtar
    TI__Genius 12215 points

        Sorry for the inconvenience caused.

        I haven't get reply on the time when the new bqz file will be released, it is better to have this parameter configured properly in the golden image, is there a chance to use g1 version for present project

       This parameter will affect capacity estimation during simulation and other capacity related parameters initializing, so it had better to be opened.

       So far no other parameters are found need to be changed from private to open. Any other issue found at your side, please let me know, my email is steven-yao@ti.com

  • 0 in reply to Steven Yao
    Prodigy 210 points

    RSOC_CONV (mentioned in TRM) is another parameter that I cant find, is this also hidden?

    How will we find out when TI has released the updated bqz file? It will really help if we can get some ETA on that!

  • 0 in reply to Fahad Akhtar
    TI__Genius 12215 points

        Thanks for catching on this, actually, the bit should be Pack Configuration B[FConvEn], error in this section will be revised in next release