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PMP10214: PMP10214 to drive BQ24650 or BQ24450

Bjornar Mo
Prodigy 20 points
Part Number: PMP10214
Other Parts Discussed in Thread: BQ24650, , BQ24450, LM5176, PMP10081

Would a PMP10214 work with a BQ24650 or BQ24450 in a 12 volt to 12 volt battery to battery charger?

  • 0
    TI__Intellectual 2770 points

    Hello Mo,

    to answer your question I need input voltage range and output current;
    PMP10214 is good for 300W+; but for such a high power conversion
    you need eight FETs and a large inductor (= expensive).

    Our LM5176 high power EVM is good for 100W+, may be 12Amps are sufficient.


    For lead acid battery you need to implement CC/CV charging, so an additional
    current regulation, similar to my PMP10081 - or use converter as voltage source plus BQ device:

    If you want to go for PMP10214 use newer device LM5176;
    if so set slope capacitor to 150pF and recalculate resistor to set Fsw;
    then it'll work w/ newer device.

    Best regards, Bernd

  • 0 in reply to Bernd Geck
    Prodigy 20 points

    12 amps will probably be sufficient.

    Power source is the alternator in my car, so input current is from 13-14.7 and current up to 130 amps.

    Thanks for the answer.