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    Answered

  • BQ27Z746: bqKey Packager for BQ27Z746

    Resolved
    Part Number: BQ27Z746 Other Parts Discussed in Thread: BQKEYPACKAGER , BQ9035 Hi Team， My customer is developing an e-cigarette battery packs program. It is currently in the prototype delivery stage and will be mass-produced soon. BYD urgently needs bqKey…
    • Resolved

  • RE: BQ27Z746: Some issue on BQ27Z746

    Grounding ENAB will affect what low power modes the gauge will enter. It should only be grounded, if you don't need a specific functionality. See the TRM for all rules regarding ENAB. The example schematic from TI which pulls ENAB low will effectively…

  • RE: BQ27Z746: Questions from driver code reference for BQ27z746

    The step by step instructions are in the TRM www.ti.com/.../sluuca6.pdf, 15.2.63 Data Flash Access() 0x4000–0x5FFF. Note that for the gauge to accept the data written as explained in the TRM, you will have to write the checksum to register 0x60 and the…

  • BQ27Z746: BQ27Z746: BqKeyPackager SHA256

    TI Thinks Resolved
    Part Number: BQ27Z746 Other Parts Discussed in Thread: BQ9035 , BQKEYPACKAGER , BQ9037 Hi There is a confusing pop window when I generate bqk files, and the steps are as follow: 1.Choose "SHA256 Key bq9035" 2.Choose "Chanllenge(20~32bytes/40~64…
    • Answered

  • BQ27Z746: BQ27Z746: The HMAC SHA256 Keys

    Resolved
    Part Number: BQ27Z746 Other Parts Discussed in Thread: BQKEYPACKAGER , BQ9035 , BQ9037 Hi I want to know the gauge's authentication function to implement the need to recognize certified batteries. Now I know the caculation of HMAC SHA256, but don't know…
    • Resolved
    • Answered

  • BQ27Z746: BQ27Z746 does not wake up when charging voltage is present

    Resolved
    Part Number: BQ27Z746 Hello. There is a problem, BQ27Z746 does not wake up when charging voltage appears. The enab output is constantly pulled down through a 47k resistor. This issue has already been discussed in this thread. e2e.ti.com/.../bq27z746-not…
    • Resolved

  • BQ27Z746: External protection IC for use with bq27z746

    TI Thinks Resolved
    Part Number: BQ27Z746 Good day, For our intended application (medical device), it is desired to add another level of protection. Ideally in the form of an external protection IC. Could you perhaps suggest a part that would be suitable for this application…

  • BQ27Z746: Authentication related question

    Part Number: BQ27Z746 Hi Team， 1. The customer's battery pack prototype has been shipped, and they want to know what is the default key inside the fuel gauge? 2. How to program the key to the gauge through the host/MCU. Please provide a process guide…
    • Answered

  • BQ27Z746: BQ27Z746; BQ24250 and BQ27Z561

    Resolved
    Part Number: BQ27Z746 Other Parts Discussed in Thread: BQ24250 , BQ27Z561 Hi TI Team, Below TI parts will be used on Flex ODM project and Our RD need 1pcs EVB&Source code for design development, Please support to have a quick check and advise when can we…
    • Resolved

  • BQ27Z746: bricked while data updating process

    Part Number: BQ27Z746 Hello. While updating data of bq27z746 (.df.fs file) via I2C, data transmission was interrupted and now bq27z746 doesn't answer on I2C addresses 0xAA and 0x16. It's strange for me, because data updating process shoudn't anyhow affect…

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