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

4.1 Equipment

To test the functionality of the BQ25822 supercapacitor backup supply, the following equipment is required:

  1. TI EVMs:
    1. Two BQ25822 EVMs
  2. Power Supply
    1. A power supply capable of supplying 48V at 40A. Chroma 62012P-100-50, or equivalent is recommended
  3. Localized Storage Element :

    1. A four-quadrant or two-quadrant power supply capable of supplying 40V at 20A. Kepco: BOP 50-20MG, or equivalent is recommended
    2. When testing without a real battery, connect 2000µF of capacitance across the input of the two/four-quadrant power supply.

  4. Load:

    1. An electronic load in constant current mode. Kikusui PLZ164WA, or equivalent is recommended

  5. ACUV Pin Controller
    1. A mechanical switch, or function generator, or equivalent device is recommended to toggle the ACUV signal, enabling transistion between forward and reverse mode.

  6. Function Generator

    1. A function generator to provide PWM signal to ILIM_HIZ pin, to emulate the performance of the OTA and control the current magnitude in forward and reverse directions.