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  • BQ27220: Generating correct profile parameters for bq27220

    Part Number: BQ27220 Hi TI Teams, We encountered the following problem when using the bq27220 as a 1-cell LiCo battery to monitor the power level. 1) Gauge drift - multiple charging cycles cause charge percentage value shift from correct to the wrong one…

  • BQ27220: BQ27220

    Part Number: BQ27220 Background We programmed the battery profile to the BQ device as I received from TI. BQ27220 device is programmed during the bootup of the device. In our device firmware, we have to do certain device actions as per the battery charge…
    • Answered

  • BQ27220: How to get Subclass ID and Offset of bq27220

    Resolved
    Part Number: BQ27220 Other Parts Discussed in Thread: BQSTUDIO Recently, I changed fuel gauge in my circuit of new product from bq27410 to bq27220 for better accuricy. But, I'm suffering to findout Subclass ID and Offset to configure bq27220. In the technical…
    • Resolved

  • RE: BQ27220: I look for Linux driver for bq27220

    Hello Hong, The bq27541 has the same commands as bq27220 for RSOC and Flags. Normally the device in the same series has same commands, but in this case it is not that way.

  • BQ27220: Inquiries regarding level measurement problems when charging/discharging

    Part Number: BQ27220 Hi, TI support team We have received the following inquiry from our customer. Application: Dog healthcare equipment Applicable product: BQ27220 [problem] 1. Battery level is incorrect when charging 2. Battery level is not accurate…
    • Answered

  • BQ27220: Determining initial SOC

    Resolved
    Part Number: BQ27220 Other Parts Discussed in Thread: BQSTUDIO We are desigining a system that is battery powered (LiPO) via a rechargeable cell (4.2V max, 3.7V nominal). The battery will be removed from the system and charged OUTSIDE of the system and…
    • Resolved
    • Answered

  • RE: BQ27220: Fuel gauge Inquiry

    Resolved
    Hi, Does BQ27220 & BQ27427 requires a learning cycles for each and every new device? - Is it possible to have accurate readings for fresh new device with battery in manufacturing for both BQ27220 and BQ27427, from the first cycle without learning cycles…
    • Answered

  • RE: BQ27220EVM-744: BQ27220 Gauging Parameter Calculator

    Resolved
    Hello Farhad, The deviation in the report is because the data does not match the curves seen with normal batteries. At high rate there is normally self heating, so check if you can place the thermistor in a better location to capture the cell temperature…

  • BQ27220: Data log & config.txt

    TI Thinks Resolved
    Part Number: BQ27220 Other Parts Discussed in Thread: GPCCEDV , BQSTUDIO Hello Expert, I'm ready to configuration set to get Data Log Files (6 ea) for GPCCEDV on bqstudio. Could you please write your comment about each my questions? 1. Before starting…

  • BQ27220: Pull-up voltage for I2C and GPOUT setting

    TI Thinks Resolved
    Part Number: BQ27220 Hello Expert, We will use battery which is range from 3.0V to 4.35V. 1. Is there no problem if we use 3.3V pull-up voltage for I2C? 2. We are trying to use the GPOUT pin as a LOW battery interrupt when below 3.5V. Can we set and…

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