SLUUCY5 November   2023 BQ25756E

 

  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. 4Additional Information
    1.     Trademarks

2.4.3 Equipment Setup - Using a CV Load

GUID-20231109-SS0I-HN9Q-Q7VP-V4WCKCRG4JSC-low.png

Use the following guidelines to set up the equipment:

  1. Set power supply #1 for 30 V DC, 6 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 (VOUT and PGND).
  5. Connect a voltage meter across J3 (VOUT and PGND).

  6. Set electronics load to CV mode and 23.5 V Turn off Load #1.

    Note: Add a 3000uF capacitor on BAT pin when testing without real battery.

  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. Unplug Jumper 13.
  10. Turn on the computer and power supply #1. 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. The main window of BQ25756E EVM software appears.
    4. Change I2C Address to D4(6A) and click Read Register.
    GUID-20231109-SS0I-Q48G-CS2P-C5S6Q80RDGJW-low.png
  11. Set WATCHDOG and EN_CHG to disabled.
    GUID-20231109-SS0I-CT1Q-5M0T-RK4DFQLXDTLT-low.png
  12. In 16 Bit Registers, set ICHG_REG to 2000 mA and IPRECHG to 2000 mA.
  13. Set EN_CHG to enabled. Plug in Jumper 13.
  14. Set power supply #1 to 30 V, measure

    V(J1(VAC)) = 30 V ± 0.5 V

    I(J1(IAC)) = 1.6 A ± 0.5 A

    V(J3(VBAT)) = 23.5 V ± 1 V

    I(J3(IBAT)) = 2 A ± 0.5 A

  15. Set power supply #1 for 23 V, measure

    V(J1(VAC)) = 23 V ± 0.5 V

    I(J1(IAC)) = 2.1 A ± 0.5 A

    V(J3(VBAT)) = 23.5 V ± 1 V

    I(J3(IBAT)) = 2 A ± 0.5 A

  16. Set power supply #1 for 10 V, measure

    V(J1(VAC)) = 10 V ± 0.5 V

    I(J1(IAC)) = 5 A ± 0.5 A

    V(J3(VBAT)) = 23.5 V ±1V

    I(J3(IBAT)) = 2 A ± 0.5 A