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    Answered

  • RE: BQ25820: Designing a Li-Po battery charger with fuel gauge, maybe the BQ27427?

    Resolved
    Hello Leif, The charger should work with the battery gauge, the main thing that the battery gauge cares about is the current going in and out of the cell meaning it is versatile with many loads and chargers. Thank you, Alan
    • Answered

  • BQ25820: Power Path / MPPT

    Resolved
    Part Number: BQ25820 Tool/software: Are the back-to-back ACFETs required for MPPT operation? Can one or both be omitted (like BATFET?)
    • Resolved

  • RE: BQ25820: the timming of boost reverse power from the battery to the system

    Hello Vincent, Vincent Xu said: Mostly, based on the spec of BQ25820, we don't have a spec for the vsys rise time after VAC falls below ACUV. However I measured using our EVM, and the rise time was less than 1ms. Can you confirm you followed the schematic…
    • Answered

  • BQ25820: question about the mode of operation

    Resolved
    Part Number: BQ25820 Tool/software: Hi, I want to use the BQ25820 to charge a LiPo accu with a solar cell and supply the board. The solar cell provides 5V with 2-4W. The akku is a LiPo 3,7V with 27Ah. The system voltage is 3,7V. If the solar cell powers…
    • Resolved

  • BQ25820: Doubt on choosing right MODE pin resistance.

    TI Thinks Resolved
    Part Number: BQ25820 Tool/software: I am currently designing a battery charger based on BQ25820 for a 2S Li-Ion battery with power path management. The nominal input voltage is 24vdc, and the device will operate solely in buck mode. According to the…
    • Answered

  • BQ25820: How to determine the output voltage when setting the BQ25820.

    Resolved
    Part Number: BQ25820 Other Parts Discussed in Thread: BQ25756 Tool/software: Hi, Please tell me how to determine the output voltage in the BQ25820 settings. I'm checking the settings of each register via I2C, but to determine the voltage output, should…
    • Resolved

  • BQ25820: ACDRV stopped working and REGN lost voltage output

    Part Number: BQ25820 Other Parts Discussed in Thread: , BQ24610 Tool/software: I created a board based on the BQ25820EVM. It worked at first, but then ACDRV stopped working and REGN lost voltage output. I think the surge voltage from the power input…
    • Answered

  • BQ25820: Differences between BQ25820 and BQ24610.

    Resolved
    Part Number: BQ25820 Other Parts Discussed in Thread: BQ24610 Tool/software: Hello I am considering using the BQ25820 for battery charging, but how does it differ from the BQ24610? The battery is a LiFePO4 battery module (12.8Vx2, 20000mAH). TI recommended…
    • Resolved

  • BQ25820: MPPT solar charger IC for 40+A (LifePo4 pack)

    TI Thinks Resolved
    Part Number: BQ25820 Other Parts Discussed in Thread: BQ25756 , BQ25750 , TIDA-010042 , BQ25756E Tool/software: HI, i am trying to design MPPT charger that will be able to charge 12V or 24V LifePo4 battery packs (usually 300Ah or more). Solar panels are…

  • BQ25820: Looking for charger solution to support 12V/100W system power

    TI Thinks Resolved
    Part Number: BQ25820 Other Parts Discussed in Thread: BQ25750 , Tool/software: Dear team, We are try to find a charger solution for below application. May we have your suggestion for battery charger? Thanks. 1. input source: DC 12Vin, output 12Vout/1…

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