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BQ24616: BQ24616 charging problem

Intellectual 1265 points

Replies: 3

Views: 149

Part Number: BQ24616

Dear team,

The current debugging from 1cell-5cell is normal, and the charging current is in line with the design requirements, but when the battery is adjusted to 6cell, as long as a power-on, about 1s time status indicator shows charging, but I did not pick any battery .
Then adjust the resistance and change the original 6cell charge to 5cell charge. The phenomenon is the same as the 6cell charge. What is the problem?

Vin=28V, Iadapter=4A, Iprecharge=0.3A, Icharge=1.5A, charging time is set to 2 hours, when the problem occurs, the input current position is around 0.1A.

Could you please help answer this question?

Thanks & Best Regards,

Sherry

  • Sherry,

    Could you measure the input voltage, PH node and VBAT when the operation is abnormal? Do you use 6 cell battery or battery simulator in the circuit? You commented "I did not pick any battery", but I am not sure what you meant.

    Regards,

    Eric

    Texas Instruments

    Battery Charger Solutions

  • In reply to ezhao:

    Hi Eric,

    I will measure that. Sorry I didn’t express it clearly. I mean I did not connect any battery.

    Best Regards,
    Sherry
  • In reply to Sherry Liang:

    Hi,

    We haven’t heard back from you for a while, the thread is considered solved and closed.

    Thanks!
    Please click "This Resolved my issue" button if this post answer your question.

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