• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 265 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.

bq77910 charge recovery condition from UVP

Eungsoo Kim
Prodigy 20 points

Is there any solution to inhibit charging to zero volt cell while charger detection feature is available.

At the moment, the CHG FET is enabled immediately if charger is detected under UVP condition.

Thanks in advance!

Eungsoo Kim/CEO

   

  • 0
    Intellectual 410 points

     

     

    Yes.  In "pre qualification " stage of charging algorithm you can force charger to work under short- circuit condition for some  time. Set "pre qualification"   timer on 10-30 seconds and check  for output voltage  positive slope.  Current limit should be   on  1/10 of charging  current.

     

     When controller ( analog or digital) detect positive slop, charing process will follow  charging algorithm.

    If you give me  more details about battery chemistry (or super- cap capacity), type of charger ( micro- controlled or analog and hardware ) I can give you more specific solution.

    Dragan