SLUAAY7 November   2024 BQ25756

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Equipment
    1. 2.1 Equipment Setup
    2. 2.2 Evaluation and Results
    3. 2.3 Optional Power Role Swap Test
  6. 3Summary
  7. 4References

2 Equipment

To fully test the functionality of USB-C 240 Watt EPR using this method, the following equipment is required:

  • TI EVMs:
    • Two BQ25756EVMs and Two TPS26750 EVMs
  • Connectors:
    • A USB-IF compliant EPR cable, Two 4x2 IDC Ribbon cables, Two TPS26750EVM to BQ25756EVM Interposer Boards or similar connector for power transfer.
  • Power Supply:
    • A power supply capable of supplying 30V at 9A
  • Load:
    • There are two ways to simulate a battery, the first and preferred way is to use a four-quadrant power supply. The second is to use a electronic load in constant voltage mode.
    • If load is a four-quadrant or two-quadrant power supply. Kepco: BOP 50-20MG, DC Voltage from 0 to ±50 V, DC current from 0 to ±20 A (or higher), or equivalent is recommended.
    • If load is an electronic load in constant voltage mode, Kikusui PLZ164WA 0-150V, 0-33A, or equivalent is recommended.
    • When testing without a real battery, connect 2000µF of capacitance across the input of the electronic load/four-quadrant power supply.
  • Optional Additional Equipment:
    • To perform a power role swap test with battery charging, two Bi-Directional Power supply such as a Kepco: BOP 50-20MG DC Voltage from 0 to ±50 V, DC current from 0 to ±20 A (or higher), or equivalent is required.