SLUUCT7B may   2023  – august 2023 BQ25756

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Device Information
    4. 1.4 General Texas Instruments High Voltage Evaluation (TI HV EMV) User Safety Guidelines
      1. 1.4.1 General Safety Information
  7. 2Hardware
    1. 2.1 Board Parameters
    2. 2.2 IO and Jumper Descriptions
    3. 2.3 Recommended Operating Conditions
    4. 2.4 Equipment
      1. 2.4.1 Equipment Set Up
      2. 2.4.2 Equipment - Using a CV Load
      3. 2.4.3 Equipment Setup - Using a CV Load
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials
  9. 4Revision History

2.4.1 Equipment Set Up

GUID-20230602-SS0I-TNBK-KKJM-FP1HKNMDDZV5-low.svg

Use the following guidelines to set up the equipment:

  1. Set power supply #1 for 23 V DC, 8 A current limit and then turn off the supply.
  2. Connect the output of power supply #1 in series with a current meter to J1 (VIN and PGND).
  3. Connect a voltage meter across J1 (VIN) and J1 (PGND).
  4. Connect load #1 in series with a current meter to J3 (VBAT and PGND).
  5. Connect a voltage meter across J5 (VBAT and PGND).
  6. Set 23 V at KEPCO load output. Limit KEPCO to 6 A. Use load #2 to power EVM from the VOUT output.
  7. Connect J5 to the EV2400. Connect J5 to the I2C PORT 2 on the EV2400.
  8. Make sure the jumpers are installed as indicated in IO and Jumper Descriptions.
  9. Turn on the computer and load #2. Open the bqStudio software.
    1. Select Charger and click the Next button.
      GUID-BBABDD13-9908-4EF8-96CA-1BC9ED99FFAA-low.jpg
    2. Select Charger_1_00_BQ25756.bqz on the Select a Target Page.
    3. After selecting the target device, click Field View and then click the Read Register button.
    GUID-20230602-SS0I-GN7P-DHMD-QLHHZXFLJRRN-low.svg
  10. Set WATCHDOG and EN_CHG to disabled.
    GUID-20230602-SS0I-975L-38SW-JWC8QH5PPM6D-low.svg
  11. In 16 Bit Registers, set ICHG_REG to 4000 mA and IPRECHG to 1000 mA.
  12. Turn on power supply #1, measure

    V(J1(VAC)) = 23 V ± 0.5 V

    I(J1(IAC)) = 4.1 A ± 0.5 A

    V(J3(VBAT)) = 23 V ± 0.5 V

    I(J3(IBAT)) = 3.9 A ± 0.5 A

  13. Set power supply #1 for 40 V, measure

    V(J1(VAC)) = 40 V ± 0.5 V

    I(J1(IAC)) = 2.4 A ± 0.5 A

    V(J3(VBAT)) = 23 V ± 0.5 V

    I(J3(IBAT)) = 3.9 A ± 0.5 A

  14. Set power supply #1 for 19 V, measure

    V(J1(VAC)) = 19 V ± 0.5 V

    I(J1(IAC)) = 5.0 A ± 0.5 A

    V(J3(VBAT)) = 23 V ± 0.5 V

    I(J3(IBAT)) = 3.9 A ± 0.5 A