• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 63 subscribers
  • Views 888 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.

Production with bq4050 gauge

Carl Gallenson
Prodigy 210 points
Other Parts Discussed in Thread: BQ4050, BQ34Z100, BQ78Z100, GPCCEDV, BQ2040, BQ2060

I am considering the bq4050 for a 2S design that only needs LED outputs so no I2C communications or high accuracy will be needed.  Since this gauge is CEDV, does that mean that each production pack will need a qualified LEARN cycle?  Or will simply loading a golden file and calibrating each pack be sufficient?

If such a pack would require a LEARN cycle and we wish to avoid it, what would be the next best alternative (trying to keep the design as simple and low cost as possible)?  I considered the bq34z100 or bq78z100 but would like to use an integrated protector so I can shut off the FETs when the battery is removed from the Host or charger using a Presence pin.

  • 0
    TI__Guru 73830 points

    You can use the GPCCEDV tool to find the CEDV coefficients to use in the golden file. You will also need to run a full cycle to update FCC in the golden file. That file can be used to program new packs in production and a new learning cycle is not needed. FCC will get updated as the pack is used in the field.

  • 0 in reply to ThomasCosby
    Prodigy 210 points
    Thank you Tom. A full cycle for the golden file was expected, but not having to cycle for production is a great improvement over the older devices we still use, like bq2040 and bq2060.