SLUUCU3 November   2023

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
      1. 1.1.1 Before You Begin
    2. 1.2 Kit Contents
    3. 1.3 Specifications
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Test Equipment
      1. 2.1.1 Voltage Source
      2. 2.1.2 Oscilloscope
      3. 2.1.3 Multimeters
      4. 2.1.4 Output Load
      5. 2.1.5 Fan
      6. 2.1.6 USB-to-GPIO Interface Adapter
      7. 2.1.7 Recommended Wire Gauge
      8. 2.1.8 List of Test Points, Jumpers, and Connectors
    2. 2.2 Test Setup
      1. 2.2.1 Test and Configuration Software
        1. 2.2.1.1 Description
        2. 2.2.1.2 Features
      2. 2.2.2 Evaluating Split Rail Input
  9. 3Software
    1. 3.1 Using the Fusion GUI
      1. 3.1.1  Opening the Fusion GUI
      2. 3.1.2  General Settings
      3. 3.1.3  Changing ON_OFF_CONFIG
      4. 3.1.4  Pop-Up for Some Commands While Conversion is Enabled
      5. 3.1.5  SMBALERT# Mask
      6. 3.1.6  Device Info
      7. 3.1.7  Phase Commands
      8. 3.1.8  All Config
      9. 3.1.9  Monitor
      10. 3.1.10 Status
    2. 3.2 EVM Configuration Using the Fusion GUI
      1. 3.2.1 Configuration Procedure
  10. 4Implementation Results
    1. 4.1 Performance Data and Typical Characteristic Curves
      1. 4.1.1 Efficiency
      2. 4.1.2 Load Regulation
      3. 4.1.3 Line Regulation
      4. 4.1.4 Transient Response
      5. 4.1.5 Control Loop Bode Plot
      6. 4.1.6 Output Ripple
      7. 4.1.7 Control On
      8. 4.1.8 Control Off
      9. 4.1.9 Thermal Image
    2. 4.2 Test Procedure
      1. 4.2.1 Line and Load Regulation and Efficiency Measurement Procedure
      2. 4.2.2 Efficiency Measurement Test Points
      3. 4.2.3 Control Loop Gain and Phase Measurement Procedure
  11. 5Hardware Design Files
    1. 5.1 Schematic
    2. 5.2 EVM Assembly Drawing and PCB Layout
    3. 5.3 Bill of Materials
  12. 6Additional Information
    1.     Trademarks

2.2.2 Evaluating Split Rail Input

The default configuration of the EVM is for single rail input. Split rail input enables operation with 3.3-V PVIN. For split rail operation, configure the jumpers on the EVM as follows:

  1. Move the jumper JP3 to EXT_AVIN position (Jumper on pin1 and pin2) to disconnect the AVIN pin from the PVIN pins.
  2. Apply the EXT_AVIN input to T1. 4-V or greater AVIN is required to bring the VDD5 voltage high enough to enable conversion.
  3. If operation with 3.3-V PVIN is needed and the CNTL jumpers (JP4) is in UVLO position, the resistor divider at the EN needs to be changed. Alternately, move the CNTL jumpers to CNTL_INPUT position (Jumper on pin1 and pin2) and use the control signal to enable conversion or use the ON_OFF_CONFIG and OPERATION commands to enable conversion.