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Solar MPPT Li-Poly 4.2V Battery Charger

Dharmesh Joshi
Expert 1895 points
Other Parts Discussed in Thread: BQ24650, BQ25798

Hi

I am interested in a MPPT Solar Charger for a 4.2V battery. Can you please advice which device would be able to charge using MPPT.

We are currently using the LTC4162, which has a MPPT. The MPPT is dynamically scanned and set, instead of setting a static value.

Does TI also provide a Dynamic MPPT charger?

Thank You 

  • 0
    TI__Guru** 105590 points

    Hello Dharmesh,

    Currently we have the BQ25798 and BQ24650 MPPT chargers. The BQ25798 uses a fraction of the VOC to adjust for the MPP, but does not do a full sweep of the charging current. The VOC is measured in a set interval, and the fraction of VOC used can be adjusted so it the input voltage limit matches the panel's MPP.

    The BQ24650 uses a set fraction of the PV voltage with external components.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Expert 1895 points

    HI Wyatt 

    Thank You, for your reply

    We do require full sweep as will be using multiple different solar panels.