SLUUC51D june   2020  – july 2023 BQ25790

 

  1.   1
  2.   BQ25790EVM (BMS027) Evaluation Module User's Guide
  3.   Trademarks
  4.   4
  5. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 I/O Descriptions
    3. 1.3 Recommended Operating Conditions
  6. 2Test Setup and Results
    1. 2.1 Equipment
    2. 2.2 Equipment Setup
    3. 2.3 Software Setup
      1. 2.3.1 BQSTUDIO using EV2400
      2. 2.3.2 TI Charger GUI for USB2ANY
    4. 2.4 Test Procedure
      1. 2.4.1 Initial Settings
      2. 2.4.2 Communication Verification
      3. 2.4.3 Charge Mode Verification
      4. 2.4.4 OTG Mode Verification
  7. 3PCB Layout Guidelines
  8. 4Board Layout, Schematic and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 Board Layout
    3. 4.3 Bill of Materials
  9. 5Revision History

2.1 Equipment

This section includes a list of supplies required to perform tests on the BQ25790EVM.

  1. Power Supplies for VBUS pin: Power Supply #1 (PS1): A power supply capable of supplying up to 24 V at 3 A is required.
  2. Battery Simulator for BAT pin: Load #1 (4-Quadrant Supply): A "Kepco" Load, BOP, 20-5M, DC 0 to ±20 V, 0 to ±5 A (or higher) or a Keithley 2450 3-A sourcemeter. When using both, a 1000-µF or higher, low ESR, 25-V rated or higher connected at the EVM battery and ground terminals is recommended.
    Alternative Option: A 0–20 V/0–5 A, > 60-W DC electronic load set in a constant voltage loading mode in parallel with a second power supply can be used. The second power supply is set to a voltage slightly below the electronic load's constant voltage setting. When enabled, the charger's charge current then replaces the current provided the second power supply.
  3. System load simulator for SYS pin:Load #2( Electronic load set to constant resistance or Resistive Load): 10 Ω, 5 W (or higher)
  4. Meters: (6x) "Fluke 75" multimeters, (equivalent or better).
    Alternative Option: (4x) equivalent voltage meters and (2x) equivalent current meters. The current meters must be capable of measuring at least 5 A. If used in series between the PS#1, Load#1 or Load#2, the meters should be set for manual not auto ranging. Current meters add significant series resistance which affects charger performance.
  5. Computer: A computer with at least one USB port and a USB cable. A valid internet connection is required when using the GUI Composer application.
  6. PC Communication Interface: USB2ANY Interface Adapter (when using the GUI Composer application) or EV2300/2400 USB-Based PC Interface Board (when using Battery Management Studio).