SLUUC74 May   2021 BQ25720 , BQ25723

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 General Description
  3. 2Test Summary
    1. 2.1 Definitions
    2. 2.2 Equipment
    3. 2.3 Equipment Setup
    4. 2.4 Procedure
      1. 2.4.1 Charge Function
      2. 2.4.2 OTG Function
  4. 3Bill of Materials, Board Layout, and Schematics
    1. 3.1 Bill of Materials
    2. 3.2 Board Assembly Layout
    3. 3.3 Schematic

2.4.2 OTG Function

Use the following for OTG function settings:

  1. Connect a 7-V power supply to the VBAT load.
    Remove the VIN power supply from J1. (The connection must be physically removed from the board).
  2. Write “20D0” to the Charge Voltage Register.
  3. Write “09C4” to the OTG voltage register.
  4. Write “4000” to the OTG current registers.
  5. Remove JP2 to enable the OTG function.
  6. Select EN_OTG in Charge Option 3.
    Measure → V(J1(VIN)) = 5 V ±1 V
    GUID-20210510-CA0I-QBQB-3THV-1NCQFTRJHVPB-low.pngFigure 2-4 EN_OTG