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  • BQ27220: BQ27220 abnormal current reading

    TI Thinks Resolved
    Part Number: BQ27220 Hi team, Customer is using BQ27220 in their AR project. Their charger current setting is 1.4A, and they could see the current from the charger ADC; while some of their chip read back from BQ27220, the current is -5mA, it shows…
    • Answered

  • BQ27220: BQ27220: MACData Checksum Mismatch (0x60) when updating Design Capacity (0x929F)

    Resolved
    Part Number: BQ27220 Hi everyone, I am attempting to update the Design Capacity on a BQ27220 gauge via I2C using the MACData block (0x40 - 0x5F), but I am encountering a checksum mismatch error. Even though I write the new data and my calculated checksum…
    • Resolved
    • Answered

  • BQ27220: Inquiry regarding the procedure for applying BQ27220 to a product

    Resolved
    Part Number: BQ27220 Other Parts Discussed in Thread: GPCCEDV , BQSTUDIO Hi, TI expert The customer intends to apply the BQ27220 to a portable terminal product. 1. Test Environment 1) Conducted tests configured as shown in the attached "Test Configuration…
    • Resolved

  • BQ27220: BQ27220 – Float to Hex Conversion for CC Gain / CC Delta

    Part Number: BQ27220 Other Parts Discussed in Thread: BQSTUDIO Hi Team, I am working with the BQ27220 fuel gauge and writing calibration parameters (CC Gain and CC Delta) directly into Data Memory over I²C. I am able to successfully update CC Gain…
    • Answered

  • BQ27220: bq27220 current resolution

    Resolved
    Part Number: BQ27220 Hi, I intend to use the bq27220. I would like to know the current resolution. Are my following calculations correct (ADC verf = 80mV) ?:
    • Resolved
    • Answered

  • BQ27220: bq27220 still using default EDV thresholds after successful Data Memory update for EDV

    Resolved
    Part Number: BQ27220 Hi TI Team, I am working with the bq27220 fuel gauge and configuring the EDV thresholds through MCU firmware during initialization. I updated the EDV thresholds to: EDV2 = 3200 mV EDV1 = 3000 mV EDV0 = 2900 mV…
    • Resolved
    • Answered

  • BQ27220: BQ27220: Parameters reverting to ROM defaults after POR and failing to re-update

    Resolved
    Part Number: BQ27220 I am working with the BQ27220 ROM-based fuel gauge and am encountering an issue where all RAM-based parameter updates (specifically Design Capacity) are lost during a Power-On Reset (POR). While I understand this is a ROM-based gauge…
    • Resolved

  • BQ27220: Figures about own BQ27220 consumption

    Part Number: BQ27220 Hi, We put a BQ27220 as fuel gauge on our beacon system. We are experiencing a strange self consumption of the gauge circuit when the system is completely off, e.g battery is supplying the gauge and we analysed the current profile…
    • Answered

  • BQ27220: BQ27220 temperature compensation

    Resolved
    Part Number: BQ27220 Other Parts Discussed in Thread: GPCCEDV Hi, I use the bq27220 as fuel gauge and I want to use the BTPDischargeSet() to trigger an interrupt when battery goes low. But as you well know battery capacity depends highly of temperature…
    • Resolved
    • Answered

  • BQ27220: BQ27220: Unable to Write to Data Memory Block (MACData 0x40-0x5F) – Checksum Stays at Old Value

    Resolved
    Part Number: BQ27220 Hi everyone, I am having trouble updating the Data Memory on the BQ27220 . Specifically, I am trying to update the Design Capacity at address 0x929F , but it appears the gauge is not accepting the data writes to the MACData block…
    • Resolved

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