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

2.4.1 Charge Function

Use the following for charge function settings:

  1. Make sure the Equipment Setup steps are followed.
  2. Set the Tgt Address to 12(9) for BQ25720 or D6(6B) for BQ25723.
  3. Write “020E” to charge option 0 register 0x12H (BQ25720) or 0x00H (BQ25723).
    Measure → V(J1(VIN)) = 10 V ±0.5 V
    Measure → V(TP28(CHRG_OK)) = 3 V to 4.5 V
    Measure → V(TP21(REGN)) = 6 V ±1 V
    Measure → V(TP22(ILIM_HIZ)) = 2.2 V
  4. Write “0800” to charge current 0x14H (BQ25720) or 0x02H (BQ25723).
    Turn on load #1.
    Measure → V(J6(SYS)) = 8.4 V ±0.5 V
  5. Turn on LOAD #2 (VBAT Load).
    Measure → V(J5(VBAT)) = 7 V ±0.5 V
    Measure → I(J5(VBAT)) = 2 A ±0.5 V