SLUUCF7 April   2021 BQ25960

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 I/O Descriptions
  3. 2Test Summary
    1. 2.1 Equipment
    2. 2.2 Equipment Setup
    3. 2.3 Software Setup
    4. 2.4 Test Procedure
      1. 2.4.1 Initial Settings
      2. 2.4.2 Communication Verification
      3. 2.4.3 Switched Cap Mode Charge Verification
      4. 2.4.4 Bypass Mode Charge Verification
      5. 2.4.5 Dual BQ25960 Operation
      6. 2.4.6 BQ25611D Charge Verification
  4. 3PCB Layout Guidelines
  5. 4Board Layout, Schematic, and Bill of Materials
    1. 4.1 Board Layout
    2. 4.2 Schematic
    3. 4.3 Bill of Materials

2.4.2 Communication Verification

Use the following steps for I2C communication verification. Assuming the jumper settings in Table 1-3 have been followed, the I2C address for U1 is 0x65, and the I2C address for U2 is 0x67. If R29 and R32 have been populated, then the I2C address for U4 is 0x6B.

  1. In BQStudio, click "Field View" and select the I2C address for U1 (0x65).
  2. Click "Read Register" at the top of the page. "Device ACK OK" should appear at the top right.
  3. Verify that VAC1 and VOUT are reported as "Present".
    GUID-5F844D91-8A77-4F05-8419-970FFDB93CE1-low.png

  4. Change the following register settings:
    • Disable the watchdog timer
      GUID-20201218-CA0I-8TDJ-8GRZ-NFGTDZDTJL8Q-low.png

    • Set VAC1 OVP to 10.5 V or higher
      GUID-20201218-CA0I-9FXJ-QVHK-5P4MSXR7TJHZ-low.png

  5. Click "Read Register" again. In addition to VAC1 and VOUT, VBUS should now also be reported as "Present".
    GUID-8FCEA18D-2E9A-4A71-A9D4-D8C5850A5EC2-low.png

    • Measure → VVBUS_M-GND(TP2 and TP37) = 8.3 ± 0.2 V