SLVUDD7 March   2026 BQ25640

 

  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 Header Information
    2. 2.2 Jumper Information
    3. 2.3 Equipment
    4. 2.4 Hardware Setup
  9. 3Software
    1. 3.1 Software Setup
    2. 3.2 Test Procedure
      1. 3.2.1 Initial Power Up
      2. 3.2.2 I2C Register Communication Verification
      3. 3.2.3 Charger Mode Verification
      4. 3.2.4 Boost Mode Verification
      5. 3.2.5 Helpful Tips
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
      1. 4.2.1 PCB Layout Guidelines
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1.     Trademarks

2.4 Hardware Setup

Use the following list to set up the EVM testing equipment:

  1. Review EVM jumper connections in Table 2-2.
  2. Set PS #1 for 5V DC, 2A current limit and then turn off the supply.
  3. Connect the output of PS#1 in series with a current meter to J1 (VIN and PGND).
  4. Connect a voltage meter across TP10 (VBUS) and TP31 (PGND), or across J1.
  5. Turn on Load #1, set to constant voltage mode, and output to 2.5V. Disable Load. Connect Load in series with a current meter (multimeter), ground side, to J4 (BAT and PGND) as shown in Figure 2-1 if not using a source meter with current measuring capabilities.
  6. Connect a voltage meter across TP13 (BAT) and TP32 (PGND), or across J4-3 and J4-1 as in Figure 2-1.
  7. Connect a voltage meter across TP14 (SYS) and TP32 (PGND), or across J2-1 and J2-2 as in Figure 2-1.
  8. Connect a voltage meter across TP12 (PMID) and TP32 (PGND).
  9. Connect the EV2400 USB interface board to the computer with a USB cable and from I2C port to J10 with the 4-pin cable as in Figure 2-1.
  10. Install shunts as shown in Table 2-2. Note that the shunts in Figure 2-1 are not necessarily installed per the table.
    BQ25640EVM Test Setup for BQ25640 EVM Figure 2-1 Test Setup for BQ25640 EVM