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  • BQ76972: Intermittent I2C communication CRC error between MCU and BQ76972.

    Part Number: BQ76972 Hi team, I am using a GD32 MCU to talk to BQ76972 with CRC enabled at 100 kHz. A CRC-fail occurs roughly once every few minutes. All failures are on the first CRC byte of a Direct-Command read. That CRC is computed from {0x10…

  • BQ76972: Initial BQ76972 Programming Using EV2400, no REG1 REG2 Output

    Part Number: BQ76972 Other Parts Discussed in Thread: EV2400 , Tool/software: Hello, I am powering BQ76972 with 48V total stack, 3.0V per cell and communicating over I2C with the EV2400 module. I am externally powering REG1 with 3.3V while I try to program…

  • BQ76972: If the BQ76972 is in SEALED mode, can it be commanded over I2C to enable FUSE?

    TI Thinks Resolved
    Part Number: BQ76972 Tool/software: I will have a BQ76972 communicating with a MCU over I2C. The BQ76972 will be in security mode SEALED. I will have a FUSE circuit that will be triggered when the FUSE pin is driven high. Is it possible to have the…

  • BQ76972: I2C communication between Stm32G4 and BQ76972 read/write failing

    TI Thinks Resolved
    Part Number: BQ76972 Tool/software: Hello Team, I am working on establishing basic communication between the STM32 MCU and the BQ76972 IC. However, I’m encountering an issue where the write operation succeeds only once—subsequent attempts consistently…

  • BQ76972: what is the official revision of the datasheet for BQ76972

    TI Thinks Resolved
    Part Number: BQ76972 Other Parts Discussed in Thread: BQ76952 Tool/software: Currently from the website, the revision for this document is '*' dated December 2023 and noted as Initial Release. There is no other updates to this? If not can the Revision…

  • BQ76972: 1 Amp Balancing current with BQ76972

    TI Thinks Resolved
    Part Number: BQ76972 Tool/software: Hi, I am planing to use BQ76972 IC for 1 Amp balance current requirement. I am planing to use external transistor with active region (No Balance resistor) to siplify the cooling attangment. While balancing all the power…

  • BQ76972: Cell Offset Calibration Fixture Requirements for BQ76972 – Need Clarification on R & C Values

    Part Number: BQ76972 Tool/software: Hello TI Expert, I’m designing with the BQ76972 and plan to perform cell offset calibration as described in Section 4.10.2 of the Technical Reference Manual (TRM). I reviewed Figure 4‑4, which shows a fixture providing…

  • BQ76972: I2C communication between Stm32G4 and BQ76972 read/write failing

    Part Number: BQ76972 Tool/software: Hello everyone, I’m currently implementing I²C communication between an STM32G4 microcontroller and the BQ76972 BMS IC. While a simple device scan correctly detects the IC’s address, every subsequent read/write operation…

  • BQ76972: Reading BQ76972 configuration

    TI Thinks Resolved
    Part Number: BQ76972 Other Parts Discussed in Thread: BQ76952EVM Tool/software: Hello, I have design using BQ76972. I wrote a simple python tool the retrieve it's configuration over I2C into a GG file. It works fine however to my surprise it reads device…

  • BQ76972: Guidance Required on CHG, DSG, PCHG, and PDSG Control in BQ76972

    TI Thinks Resolved
    Part Number: BQ76972 Other Parts Discussed in Thread: TIDA-010208 , Tool/software: BMS - CHG DSG.pdf Hello TI Team, We are working with the BQ76972 BMS IC for the first time, using the TIDA-010208 reference design as our base. We need clarification…

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