• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 194 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.

BQ40Z50: portable charger issue

Cherry Zhou
Mastermind 22235 points
Part Number: BQ40Z50


Hi team,

Here's an issue from the customer may need your help:

The portable charger cannot be fully charged. The charge protection chip is the bq40z50, which when charged to 52%, the charge current falls cliff to 0 power and shows the charge overcurrent code while discharging while charging.

But if it even cannot be fully charged, how can it be overcurrent? Please see the images below:

Could you help check this case? Thanks.

Best Regards,

Cherry

  • 0
    TI__Guru 57697 points

    Hello Cherry,

    bq40z50 has 2 independent overcurrent in charge settings. See "Protections" OCC1 and OCC2 in data memory. Check if the current exceeded any of those. Make sure to read the correct flags for the setting that is applcable or set both to the same values if using just 1 condition..