SLUUCK2A October   2022  – November 2022 BQ25620 , BQ25622

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 General Descriptions
  4. 2Testing Procedures
    1. 2.1 Equipment
    2. 2.2 Hardware Setup
    3. 2.3 Software Setup
    4. 2.4 Test Procedure
      1. 2.4.1 Initial Power Up
      2. 2.4.2 I2C Register Communication Verification
      3. 2.4.3 Charger Mode Verification
      4. 2.4.4 Boost Mode Verification
      5. 2.4.5 Helpful Tips
  5. 3PCB Layout Guideline
  6. 4Board Layout, Schematic, and Bill of Materials
    1. 4.1 Board Layout
    2. 4.2 Schematic
    3. 4.3 Bill of Materials
  7. 5Revision History

2.2 Hardware Setup

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

  1. Review EVM jumper connections in Table 1-3
  2. Set PS #1 for 5-V DC, 2-A current limit and then turn off the supply.
  3. Connect the output of PS#1 in series with a current meter to J1 (VBUS 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 2.5-V. Disable Load. Connect Load in series with a current meter (multimeter), ground side, to J4 (BAT and PGND) as shown in Figure 2-1 in not using a source meter with current measuring capabilities.
  6. Connect a voltage meter across TP13 (BAT) and TP30 (PGND), or across J4-3 and J4-1 as in Figure 2-1
  7. Connect a voltage meter across TP14 (SYS) and TP30 (PGND), or across J2-1 and J2-2 as in Figure 2-1
  8. Connect a voltage meter across TP12 (PMID) or TP11 (VPB) and TP32 (PGND), or across J3-1 and J3-2 as in Figure 2-1
  9. Connect the EV2400 USB interface board to the computer with a USB cable and from I2C port to J5 with the 4-pin cable as in Figure 2-1
  10. Install shunts as shown in Table 1-3. Note that the shunts in Figure 2-1 are not necessarily installed per the table.
    Figure 2-1 Test Setup for BQ25620EVM and BQ25622EVM