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BQ24401: Solar Panel Application

TI-CSC
Genius 11090 points
Part Number: BQ24401
Other Parts Discussed in Thread: BQ25798,

Tool/software:

Hello E2E Experts,

Good day.

I was wondering if this would be a suitable charger for solar applications.

If so I noticed on the data sheet that the schematic of the sample design notes an input DC voltage of 9-16V. However, if I were to use a 6V solar panel would this design still be functional? If so would it just charge the batteries at a slower rate? Or does the input DC voltage need to be 9V even to charge 3x 1.2V nominal NIMH batteries?

Regards,

TI-CSC

  • 0
    TI__Mastermind 20220 points

    Hi Jonard,

    Do you have more details on the panel output power in respect of the voltage range and current range? It is more than just the voltage range.

    The BQ24401 is a old legacy device which we do not have much support on. I suggest to look into BQ25798 and use the concept in the application note below to charge NiMH batteries.

    https://www.ti.com/lit/pdf/slua843 

    We do not have a dedicated NiMH battery charger with MPPT function.