SLUUD46 October   2024

 

  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 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 EVM Setup
    2. 2.2 EVM Connectors and Test Points
    3. 2.3 Testing Procedures
      1. 2.3.1 Equipment
      2. 2.3.2 Charge Mode
      3. 2.3.3 Ship Mode
  9. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials
  10. 4Additional Information
    1. 4.1 Trademarks

2.3.2 Charge Mode

Connect the equipment as the following:

  • Power Supply (PS#1): VIN of the BQ25188 at 5V
  • Power Supply (PS#2): VBAT of the BQ25188 at 3.7V
  • Scope Channel (SC#1): VIN
  • Scope Channel (SC#2): VSYS
  • Scope Channel (SC#3): VBAT

Turn the supply PS#2 on, then turn the supply PS#1 on. The VSYS rises to the level of 4.5V. The device begins to charge as long as the TS is left at default configuration and there are no other faults.

BQ25188EVM BQ25188 EVM Connections Figure 2-1 BQ25188 EVM Connections

To adjust the charge current or change other parameters, connect the USB2ANY to the EVM and then start up the TI Charger GUI.

Note: If the supplies (VIN and VBAT) are turned off, then users need to restart the TI Charger GUI for the correct I2C transactions to be reflected in the TI Charger GUI.
BQ25188EVM TI Charger GUI Device SelectionFigure 2-2 TI Charger GUI Device Selection

Select the BQ2518X from the charger selection. Click Quick Start or Register Map.

BQ25188EVM BQ25188EVM ConnectedFigure 2-3 BQ25188EVM Connected

The Quick Start is shown in Figure 2-4.

BQ25188EVM Quick StartFigure 2-4 Quick Start

The register map is shown in Figure 2-5.

BQ25188EVM Register MapFigure 2-5 Register Map