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  • BQ27Z561-R2: Does the BQ27Z561‑R2 support an I2C rate of 400 kHz?

    TI Thinks Resolved
    Part Number: BQ27Z561-R2 Other Parts Discussed in Thread: BQ27Z561 , Hello TI expert, We have a project using the BQ27Z561‑R2 chip, and we found that random I2C read errors occur when the battery is used at the customer site. We discovered that the…

  • BQ27Z561-R2: BQ27Z561-R2 use case

    TI Thinks Resolved
    Part Number: BQ27Z561-R2 Hello Team, We are planning to use 1s1p Li-ion battery pack with inbuilt PCM. Can we use P/N: BQ27Z561YPHR-R2 outside of PCM towards the system side or it is suitable to place near to battery before protection IC (charge, Discharge…

  • BQ27Z561-R2: BQ27Z561-R2: BQ27Z561-R2: SOC 0% The discharge time is too long

    Part Number: BQ27Z561-R2 Hi When discharging at -10 ℃, the SOC is discharged from 0% to Term Voltage 3.4V, with a duration of more than 1H. Can you help me check how to optimize it; The attachments are GG files and low report files LT-20260321.zip…

  • BQ27Z561-R2: Production Programming of BQ27Z561YPHR-R2

    Part Number: BQ27Z561-R2 Hello, Can you provide any documentation or application notes describing the correct production flow for this specific gauge (programming, calibration, data memory writing, golden image loading, authentication keys, and final…

  • BQ27Z561-R2: BQ27Z561-R2: Wrong value for current measurement

    TI Thinks Resolved
    Part Number: BQ27Z561-R2 Other Parts Discussed in Thread: BQ27Z561 , BQSTUDIO We are currently configuring the BQ27Z561 fuel gauge and we have encountered an issue while calculating the CC Gain. We are using a 10 mOhm shunt resistor, and by following…

  • BQ27Z561-R2: Programming BQ27Z561-R2 from STM32 Using Parsed .bq.fs File – ROM Mode Not Responding

    Part Number: BQ27Z561-R2 Other Parts Discussed in Thread: BQSTUDIO I am using the BQ27Z561-R2 and developing a production programming tool for our contract manufacturer. Instead of using BQStudio, I am parsing the my golden image .bq.fs file and having…

  • BQ27Z561-R2: SOH Configuration Values

    TI Thinks Resolved
    Part Number: BQ27Z561-R2 Hello, In order to use State-of-Health, the SOH Temp a and SOH Temp k values need to be set. The Technical Reference Manual says that they "can be set to expected values for the system during operation." What does that mean…

  • BQ27Z561-R2: I2C Interface Signal Levels

    TI Thinks Resolved
    Part Number: BQ27Z561-R2 Other Parts Discussed in Thread: BQ27Z561 In a battery driven device, we always keep the CPU at 3.3 V using a boost converter and communicate with the fuel gauge via I2C. The fuel gauge, in turn, is powered by the battery, which…

  • BQ27Z561-R2: BQ27z561-R2: RSOC and Remaining Capacity is showing 0 after flashing golden image

    Part Number: BQ27Z561-R2 Hi, According to this thread, https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1602323/bq27z561-bq27z561-chem-id-selection-for-custom-battery/6176441 i went with least DOD error % of…

  • BQ27Z561-R2: BQ27Z561YPHR-R2 Percentage reading help

    TI Thinks Resolved
    Part Number: BQ27Z561-R2 Hello, I have a project where I'm using the Ti fuel gauge BQ27Z561YPHR-R2 and BQ25303JRTER charger. I`ve completed the learning cycle and obtained the correct chemical id from GPCUploader online. Now, for each new device, I…

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