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

5.2.6 Recommended Wire Gauge

Input Wires, VIN to J1 (12-V input): The minimum recommended wire size is 1x AWG #14 per input connection, with the total length of wire less than 4 feet (2 feet input, 2 feet return). Maximum input current should be in the order of 3.5 A.

Output Wires, J3 and J4 to Load: The minimum recommended wire size is 2x AWG #14, with the total length of wire less than 4 feet (2 feet output, 2 feet return). Maximum output current should be in the order of 20 A.