SLUUD62B September   2025  – May 2026

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specifications
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 I/O Information
    2. 2.2 Jumper Information
    3. 2.3 Equipment
    4. 2.4 Hardware Setup
  9. 3Software
    1. 3.1 Software Setup
      1. 3.1.1 BQSTUDIO
      2. 3.1.2 TI-CHARGER-GUI
    2. 3.2 Test Procedure
      1. 3.2.1 Initial Power Up
      2. 3.2.2 I2C Register Setup
      3. 3.2.3 Forward/Charge/Sink Mode Verification
      4. 3.2.4 Reverse/OTG/Source Mode Verification
      5. 3.2.5 Helpful Tips
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
      1. 4.2.1 PCB Layout Guidelines
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1.     Trademarks
  12. 6Revision History

3.2.2 I2C Register Setup

Use the following steps for bench test verification:

  1. In the EVM software, click the Read or Read All Registers button.
    • Verify that the GUI does not report an ACK error.
      Note:

      If the device reads an ACK error, verify Section 2.4 and Section 3.2.1 steps have been followed.

  2. For forward/charge mode:
    Action BQSTUDIO (Field View) TI-CHARGER-GUI
    1. Disable watchdog timer to prevent registers reverting to defaults at timer expiration 8-bit tab Chip Multi-bit section Quick Start (rocket icon) page or Chip Configuration (IC icon) page
    2. To change default charge configuration per CELLS, VREG and ICHG pin resistors:
    1. Select the appropriate OVERRIDE bits
    2. Update CELLS bit if necessary
    3. Update VREG, VSYSMIN and ICHG registers
    1. 8-bit tab Forward Single-bit section
    2. 8-bit tab Forward Multi-bit section
    3. 16-bit tab Forward Multi-bit section
    		Forward/Charging Mode (plug icon) page
    3. To change input current limit less than power source max current:
    1. Disable external ILIM_HIZ pin clamp using EN_EXTILIM bit
    2. Change IINDPM register
    1. 8-bit tab Chip Single-bit section
    2. 16-bit tab Forward Multi-bit section
    1. Quick Start or Forward/Charging Mode page
    2. Quick Start or Forward/Charging Mode page
    4. Enable charging using EN_CHG bit - charge is enabled by default and /CE pin overrides CE bit 8-bit tab Chip Single-bit section Quick Start or Chip configuration page or Forward/Charging Mode page
  3. For reverse/OTG mode:
    Action BQSTUDIO (Field View) TI-CHARGER-GUI
    1. Disable watchdog timer to prevent registers reverting to defaults at timer expiration 8-bit tab Chip Multi-bit section Quick Start (rocket icon) page or Chip configuration (IC icon) page
    2. Change VIN_REV regulation voltage 16-bit tab Reverse Multi-bit section Reverse/Backup/OTG configuration page (lighting bolt icon)
    3. To disable ILIM_HIZ resistor clamp and set IIN_REV lower than 3.3A default
    1. Disable external ILIM_HIZ pin clamp by setting EN_EXTILIM=0
    2. Change IIN_REV register
    1. 8-bit tab Chip Single-bit section
    2. 16-bit tab Reverse Multi-bit section
    		Reverse/Backup/OTG configuration page
    4. Enable reverse mode by
    1. First disabling battery detect by setting EN_BAT_DETECT=0
    2. then setting EN_REV=1
    		8-bit tab Chip Single-bit section Chip configuration page or Reverse/Backup/OTG configuration page
  4. Status and fault flags are shown in the Flag and Status Single-bit sections on the 8-bit tab for BQSTUDIO and on the Chip Status and Faults page (bell icon) of TI-CHARGER-GUI.