SLUU535A September   2011  – January 2022 TPS40400

 

  1. 1 Introduction
  2. 2 Description
    1. 2.1 Typical Applications
    2. 2.2 Features
  3. 3 Electrical Performance Specifications
  4. 4 Schematic
  5. 5 Test Setup
    1. 5.1 Test and Configuration Software
      1. 5.1.1 Description
      2. 5.1.2 Features
    2. 5.2 Test Equipment
      1. 5.2.1 Voltage Source
      2. 5.2.2 Multimeters
      3. 5.2.3 Output Load
      4. 5.2.4 Oscilloscope
      5. 5.2.5 Fan
      6. 5.2.6 Recommended Wire Gauge
    3. 5.3 Recommended Test Setup
    4. 5.4 USB Interface Adapter and Cable
      1. 5.4.1 Input Connections
      2. 5.4.2 Output Connections
      3. 5.4.3 Jumper Connections, JP1 and JP2
      4. 5.4.4 Jumper Configurations
  6. 6 EVM Configuration Using the Fusion GUI
    1. 6.1 Configuration Procedure
    2. 6.2 Fusion GUI Screenshots
  7. 7 Test Procedure
    1. 7.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 7.2 Control Loop Gain and Phase Measurement Procedure
    3. 7.3 List of Test Points
    4. 7.4 Equipment Shutdown
  8. 8 Performance Data and Typical Characteristic Curves
    1. 8.1  Efficiency
    2. 8.2  Load Regulation
    3. 8.3  Load Transients 1
    4. 8.4  Load Transient 2
    5. 8.5  Load Transient 3
    6. 8.6  Input and Output Ripple
    7. 8.7  Switch Node and HDRV
    8. 8.8  VIN Turn On
    9. 8.9  Enable ON / OFF
    10. 8.10 Turn ON with 92% (1.1V) Pre-bias
    11. 8.11 TPS40400EVM-351 Bode Plot (20-A output)
  9. 9 EVM Assembly Drawing and PCB Layout
  10. 10List of Materials
  11. 11Revision History

6 EVM Configuration Using the Fusion GUI

In order to configure the TPS40400 controller on the EVM, it is required to use the TI Fusion Digital Power Designer software. It is necessary to have input voltage applied to the EVM prior to launching the software so that the TPS40400 may respond to the GUI and the GUI can recognize the TPS40400. The default configuration for the EVM is to start converting at an input voltage of 7 V, so in order to avoid any converter activity during initial configuration, an input voltage less than 7 V should be applied.