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Charging NiMh battery pack with BQ2004

Discussion in 'Power Electronics' started by Anard, Feb 21, 2018.

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  1. Anard


    Feb 21, 2018
    I'm back just for explaining my mistake I just found, if it could help anybody...
    My charger everytime went to "Charge Complete" state after about 5 to 15 minutes because of ripple noise on TS, BAT and SNS pins.
    Indeed, my newbie mistake was I placed capacitors of the low pass filters on the wrong side of the resistors (which then had no effect in the filters).
    You can compare on my circuit and on the original one the positions of CB, CTS and CSNS...

    After a full charge cycle, it now seems to be all OK !
    Anyway, thanks so much for taking a look too my issue.
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