SDAA092 October   2025 BQ25822

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2BQ25822 Overview
  6. 3Implementing High-Power Supercapacitor Backup Design with BQ25822
  7. 4BQ25822 Evaluation
    1. 4.1 Equipment
    2. 4.2 BQ25822 EVM Setup
    3. 4.3 Evaluation and Results
  8. 5Summary
  9. 6References

4 BQ25822 Evaluation

To demonstrate the BQ25822 supercapacitor backup operation, two BQ25822 evaluation modules (EVMs) were connected in parallel to increase the available power for charging and discharging the backup supply. In this setup, a mechanical switch on the ACUV pin is used to control the direction of current flow, and a PWM signal on the ILIM_HIZ to control the current magnitude

Note: Due to equipment limitations, forward mode was evaluated at 20A charge current, and reverse mode was evaluated at 10A discharge current.