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Chargers and BMS for 2-10 Amps

Chi Sun
Prodigy 50 points
Other Parts Discussed in Thread: BQ24610, TPS2552

Will the following products (tagged below) provide proper charging and battery management for a hybrid electric drive train system that runs about 2-10 Amps? We are looking at a few charger circuits and some of the ones we ordered are too small. Any recommendations are appreciated. Batteries will be Li-ion with 6+ cells.

  • 0
    Prodigy 50 points

    If you need more details let me know. The project is mainly looking at chargers and BMS circuits that will provide power to a 24 V motor to run a small RC aerial vehicle in combination with another small engine. We need EE gurus who can help us find the right product on here so we can run the experiment. Otherwise we may need to work on building the circuits in-house which may be more challenging. Other requirements include temperature control (no overheating), voltage regulator, and voltage limit. Anyone? Thanks.

  • 0 in reply to Chi Sun
    Prodigy 50 points

    The part we just received, BQ24610 and other similar parts, are too small. We are wondering if we need to look for something bigger or connect to each individual Li-ion cell by itself. Even though the specs say it will support up to 28V and up to 10 Amps we are not sure how to integrate that. 

  • 0 in reply to Chi Sun
    TI__Mastermind 31120 points

    The bq246xx family is the highest voltage chargers that we have.

    You can search on bq246 in the search window and find all the options.

    the adapter needs to be at least 3V below the maximum since the absolute maximum is with the switch ringing.

    The power stage on the EVM may not be rated for your requirements but since the switching FETs, input/output caps and inductor are external, you can choose components that will work.

    I would get an EVM and start will 5 cells at various loads and see how it meets your expectations and then build a board with higher power. Six cells is probably the most than can be achieved with this part.

  • 0 in reply to Charles Mauney
    Prodigy 50 points

    Thanks for the info. We'll look for the evaluation module. We see that TI has TPS2552/3DBVEVM and TPS2552/3DRVEVM evaluation modules, are they like circuit boards that we can connect the chargers and BMS to? We will look into the manuals and see how to do that. 

    Thanks again.

  • 0 in reply to Chi Sun
    Prodigy 50 points

    Does anyone know which charger EVM we should look at?