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  • BQ24650: BQ24650 current limited on custom design

    Part Number: BQ24650 Hello, We developed a battery charger with the BQ24650 for a 12V lead-acid battery. We worked on the bq24650EVM board and the SLVA437A application note to prepare our application. It was working fine to charge at 5A on the battery…
    • Answered

  • BQ24650: Bq24650 is not charging, and L1 and Q3B is blowing

    Resolved
    Part Number: BQ24650 Hello TI Support Team, I am designing a solar charger using the BQ24650 for a 4S LiFePO4 battery pack. I have followed the BQ24650 reference design(BQ24650EVM-639) for the power stage, including the MOSFETs, inductor, current-sense…
    • Resolved
    • Answered

  • BQ24650: BQ24650 charging current capped at ~2A

    Resolved
    Part Number: BQ24650 Hello, I am designing a battery charge controller using BQ24650, but I was getting ~2A charge current capped on a 12V LiFePo4 battery, while the IC is designed for 8A max charge current. Please find the screenshot of the schematic…
    • Resolved

  • BQ24650: BQ24650 won't recognize a healthy LiFePO4 battery — stuck cycling in "battery absent"

    TI Thinks Resolved
    Part Number: BQ24650 Other Parts Discussed in Thread: LM5125A-Q1 , LMQ61460

  • BQ24650: BQ24650 with larger MOSFET

    TI Thinks Resolved
    Part Number: BQ24650 Hello, I was planning to use the BQ24650 with larger external logic-level MOSFET in order to achieve an output charging current of about 10A to 15A. Do you think that the internal gate drivers would be able to manage MOSFET having…
    • Answered

  • BQ24650: BQ24650 not charging 4S LiFePO4, REGN OK but no PWM, STAT1 ON

    Resolved
    Part Number: BQ24650 Hello, I am designing a solar charger using the BQ24650 for a 4S LiFePO4 battery pack. Current configuration: Solar panel: 20 W, nominal 12 V panel Measured panel voltage in good sunlight: approximately 19 V Battery…
    • Resolved

  • BQ24650: BQ24650 STAT1 LED Status Issue

    TI Thinks Resolved
    Part Number: BQ24650 hi there, I have designed a circuit using the BQ24650, referencing two different application notes. Preventing bq24650 Leakage Current When Using Shaded Solar Panels, Using the bq24650 to Charge a LiFePO4 battery My setup is as…
    • Answered

  • BQ24650: BQ24650 – Is VIN operation above 28 V acceptable if solar panel Voc reaches 31 V at low temperature?

    Resolved
    Part Number: BQ24650 Hi TI Team, We are considering using the BQ24650 in a solar-powered lighting project. Our solar panel has the following characteristics: Solar panel Voc = 28 V at 25°C At low ambient temperatures, the panel open-circuit…
    • Resolved

  • BQ24650: 0.015A power consumption on BQ24650 MPPT charger

    TI Thinks Resolved
    Part Number: BQ24650 Hi Team, Posting on behalf of our customer. I’m seeking guidance with a custom BQ24650-based MPPT solar charge controller design. Issue: When the board is powered from the battery and the solar panel is disconnected or there…

  • BQ24650: Internal precharge timer issues

    TI Thinks Resolved
    Part Number: BQ24650 Hello there, Sorry, but I think there is a big mistake in the chip design regarding the 30mn internal precharge timer when the battery is close to deep discharge state. I explain the problem : a 12V battery is close to deeep discharge…

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