SLUAA32A October   2020  – September 2021 BQ769142 , BQ76922 , BQ76942 , BQ76952

 

  1.   Trademarks
  2. 1Production Programming of BQ769x2 Device Family
  3. 2Calibration
    1. 2.1 Calibration Accuracy
    2. 2.2 Cell Voltage Gain Calibration
      1. 2.2.1 Cell Voltage Gain Calibration Steps
    3. 2.3 Cell Voltage Offset Calibration
      1. 2.3.1 Cell Voltage Offset Calibration Steps
    4. 2.4 TOS (Top-of-Stack), PACK, and LD Pin Voltage Calibration
      1. 2.4.1 TOS / PACK / LD Voltage Calibration Steps
    5. 2.5 ADC Gain Calibration
    6. 2.6 Current Calibration
      1. 2.6.1 Board Offset Calibration Steps
      2. 2.6.2 CC Gain Calibration Steps
    7. 2.7 Temperature Calibration
      1. 2.7.1 Temperature Calibration Steps
    8. 2.8 COV and CUV Calibration
      1. 2.8.1 COV Calibration Steps
      2. 2.8.2 CUV Calibration Steps
    9. 2.9 Calibration Code Example
      1. 2.9.1 Code Example
      2. 2.9.2 Code Output
  4. 3OTP Programming
    1. 3.1 Recommended Steps for Writing OTP in Production
  5. 4References
  6. 5Revision History

1 Production Programming of BQ769x2 Device Family

While the BQ769x2 can be configured by the host in the application, there are some advantages to configuring the device on the production line using OTP. First, pre-configuring the OTP allows you to configure important device settings that may be difficult to configure in the application. For example, if the application host relies on the BQ769x2 LDO for power or needs to select a different communication type than the default selection, it may be more practical to have these settings pre-configured in OTP so that the device powers up with the desired settings. To see which available communication type and LDO configurations are available to order pre-configured, see the device-selection table in the device-specific data sheet.

Another advantage of configuring the device on the production line is it allows the opportunity to calibrate voltage, current, and temperature measurements for the best possible accuracy. Calibration is only practical on the production line where applied voltages, current, and temperature can be tightly controlled.