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Original question:

BQ4050: BQ4050 protection time accuracy

BQ4050: BQ4050 minimum taper charge

Star Xu
Genius 9645 points
Part Number: BQ4050
Other Parts Discussed in Thread: BQSTUDIO

Hi

When doing the learning test, change the minimum taper charge 750mAh to 800mAh, the RSOC can not reach 100%.

How to calculate the minimum taper charge. I do not find this parameter from the TRM.

Thanks

Star

  • 0
    TI__Genius 11535 points

    Hi Star,

    Can you clarify which parameter you are talking about? Do you mean the taper current?

    Best,

    Jessica

  • 0 in reply to Jessica H.
    TI__Genius 9645 points

    Hi Jessica

    Thanks for your reply.

    I want to know the parameter of minimum taper charge.

    After change this parameter from 750mAh to 800mAh the battery can not charge to 100%.

    Thanks

    Star

  • +1 in reply to Star Xu
    TI__Genius 10370 points

    Star,

    This parameter is normally a private one. Which version of bqStudio and FW are you using? This parameter should be left default, and is not used in the way you think it is, instead it is used for charge accumulation during the taper window. There is no way you will accumulate 800mA in 40 seconds. 

    The parameter you want to configure correctly is the "Taper Current". Normally this value is in the C/20 range. 

    Thanks,

    Eric Vos