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Showing 50 results View by: Thread Post Sort by
  • BQ25820: BQ25820 and BQ25820EVM- BATFET control

    Shachar Armon
    Shachar Armon
    TI Thinks Resolved
    Part Number: BQ25820 Tool/software: Hi, Can you please explain the usage and the difference of the: FORCE_BATFET_O FF ( REG0x19_Power_Path_and_Reverse_Mode_Control Register) and the EN_BATFET_IDEAL _DIODE and the relation between both In general and in…
    • 21 days ago
    • Power management
    • Power management forum
  • BQ25820: BQ25820 Boosting the charge current beyond 20A possible?

    Jeff Campbell
    Jeff Campbell
    Part Number: BQ25820 Tool/software: Hello, I know the BQ25820 is limited to 20A in the datasheet. What would prevent using it at 30A with higher current external FET's and high current Inductors? There is a note about the Rsense remaining 5mOhms…
    • 14 days ago
    • Power management
    • Power management forum
  • BQ25820: BQ25820 Buck battery charger settings for NiMH Chemistry

    Will Jarrett
    Will Jarrett
    TI Thinks Resolved
    Part Number: BQ25820 Tool/software: Customer is using NiMH battery 2xC type (in series) 2.4V 5Ah. Does the BQ25820 support for charging NiMH battery chemistry? Product details says yes, but details are difficult to find. If it does support NiMH chemistry…
    • 1 month ago
    • Power management
    • Power management forum
  • BQ25820: schematic review

    Cickey Xu
    Cickey Xu
    TI Thinks Resolved
    Part Number: BQ25820 BQ25820 Tool/software: dear support team please help review BQ25820's schematic circuit. the basic parameter as below input voltage :25-46V output voltage:21v; charge current:20A; switch frequency:200Khz ;
    • 4 days ago
    • Power management
    • Power management forum
  • BQ25820: Schematic review

    Gary Zeng
    Gary Zeng
    TI Thinks Resolved
    Part Number: BQ25820 Tool/software: Hi TI experts, Could you please help review below schematic for humanlike robot application. BQ25820 SCHEMATIC1 05_Charger.pdf 1. Do not set the overvoltage charging cut-off voltage; 2. The undervoltage charging cut…
    • 25 days ago
    • Power management
    • Power management forum
  • Answered
  • [FAQ] BQ25820: How To Connect BQ25820 If Power Path Is Not Needed

    Christian Moyer
    Christian Moyer
    Resolved
    Part Number: BQ25820 Tool/software: If power path is not needed on BQ25820, remove the BATFET, connected Pin 32 (SYS) to Pin 33(VAC), leave Pin 15 (BATDRV) floating, and connect Pin 16 (BATSRC) to Pin18(VLSNS). Best Regards, Christian
    • Resolved
    • 4 months ago
    • Power management
    • Power management forum
  • RE: BQ25820: Designing a Li-Po battery charger with fuel gauge, maybe the BQ27427?

    Alan Frias
    Alan Frias
    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
    • 24 days ago
    • Power management
    • Power management forum
  • Answered
  • BQ25820: Function of HIZ MODE

    Martin Sauer
    Martin Sauer
    Resolved
    Part Number: BQ25820 Tool/software: Hi, what is the meaning of HIZ mode? With HIZ enabled, the device disconnects the input source and will provide the system with battery power. BR martin
    • Resolved
    • 2 months ago
    • Power management
    • Power management forum
  • Answered
  • BQ25820: Power Path / MPPT

    Korbin
    Korbin
    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
    • 2 months ago
    • Power management
    • Power management forum
  • RE: BQ25820: the timming of boost reverse power from the battery to the system

    Christian Moyer
    Christian Moyer
    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…
    • 1 month ago
    • Power management
    • Power management forum
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