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BQ24610: Fast Charging current is low

Taehwan Choi
Prodigy 220 points
Part Number: BQ24610

I want that Fast charging current become closed 2A

I measured Charge current that is 1.3A.

what should i do for solution?

*Condition

Battery's maxim voltage is 13.05V

Vin = 15V

So I set that

V bat =13.02V

Vset1= 0.4V( Max fast charge is 2A)

Vset2= 0.6V( Precharge and termination current is 0.6A

Vacset=1.6V(Rac=0.2ohm, Iacset=4A)

  • 0
    TI__Guru 57341 points
    Hi,

    Have you verified your design using the bq246xx calculation tool downloadable at www.ti.com/.../toolssoftware

    Thanks!
    Please click "This Resolved my issue" button if this post answer your question.
  • 0 in reply to Ning T
    Prodigy 220 points

    Hi, Ning T.

    Thank you for reply.

    I did check  expected fast charge current by given Calcurator.

    but the configuration is right.

    In order to raise the Fast Charging Current upto 2A,

    I think... Should I raise Vset1 more than 2A??

    so.. if PCB is dubbuged, Has it porblem to a Battery for reliability test? or Is it dangerous to a battery for reliability test?

    Battery's Max Charging current is 2A.

    I should solve this problem.

    please help me with problem.

    thank you

  • 0 in reply to Taehwan Choi
    TI__Guru 57341 points
    Hi,

    The actual fast charge current should be close to the fast charge current setup. If you increase Vin from 15V, will the fast charge current change?

    Thanks!
    Please click "This Resolved my issue" button if this post answer your question.
  • 0 in reply to Ning T
    Prodigy 220 points

    Hi, Ning T

    According to your mention, I think I will do artwork again ,refering to recommended EVM .

    you said the The actual fast charge should be close to the fast charge current setup.

    I think It is abnormal about PCB.  Maybe, Artwork might not be good.

    Thank you so much for your reply