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

2.4.4 Boost Mode Verification

Use the following steps for boost mode verification:

  1. Turn off and disconnect PS #1.
  2. Set Load #1, the battery simulator, to 3.7V and 2A current limit.
    Note:

    If Load #1 connected from BATTERY-J4(3) to GND-J4(1) is not a four quadrant supply, remove Load #1 and use PS #1, set to 3.7V, 2A current limit and connect to BATTERY-J4(3) and GND-J4(1).

  3. In the EVM software on the 16-bit tab, confirm that VOTG, the OTG regulation voltage, is set to 5.04V and IOTG, the OTG current limit, is set to 1000 mA.

  4. In the EVM software on the 8-bit tab under the Device Single Bit registers, enable OTG (EN_CHG can remain enabled).
    GUID-20221111-SS0I-NZPB-TRF8-Q0JPSZZCFHJW-low.png
  5. Connect Load #2 across VPB-J3(1) and PGND-J3(2).
  6. Set Load #2 to 500mA constant current load (or resistance of 2.5 W) and the turn on the load.
  7. To confirm the VOTG regulation,
    • Measure→ VBUS = 5.04 V + 25 mV
  8. Turn off and disconnect the power supply.
  9. Remove Load #2 from the connection.