SLUAB35 September   2025 BQ76905 , BQ76907

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Normal Mode
    1. 2.1 For 7 Cell Battery Pack
    2. 2.2 Less Than 7 Cell Battery Pack
  6. 3Sleep Mode
  7. 4Startup Mode
  8. 5Cell Balance Mode
  9. 6Summary
  10. 7References

4 Startup Mode

As shown in Figure 4-1, if this wakes up from SHUTDOWN Mode, exits from DEEPSLEEP Mode, or exits from CONFIG_UPDATE Mode, BQ76907 can enter Startup Mode. As shown in Figure 4-1, at the moment of wakeup or exit, BQ76907 can immediately perform Burst sampling similar to Sleep Mode, that is, sampling all cell voltages and Shared Slots. After sampling, if there is no abnormal event such as protection, this can enter Normal Mode normally.

Voltage Measurement Loop in Startup Mode (7S version) Figure 4-1 Voltage Measurement Loop in Startup Mode (7S version)

Note that in the Burst sampling phase of Startup Mode, all T_Slots are fixed and cannot be configured. In addition, except for temperature-related sampling, all voltage sampling is performed according to the minimum time, to complete the acquisition of all voltages as quickly as possible, speed up the startup time, and optimize the user experience.