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

3 Electrical Performance Specifications

Table 3-1 TPS40400EVM-351 Electrical Performance Specifications
PARAMETERTEST CONDITIONSMINTYPMAXUNITS
Input Characteristics
Voltage rangeVIN81214V
Maximum input currentVIN = 8 V, IO = 20 A3.5A
No load input currentVIN = 14 V, IO = 0 A with auto skip mode50mA
Output Characteristics
Output voltage, VOUT1.2V
Output voltage regulationLine regulation(VIN = 8 V - 14 V)0.5%
Load regulation(VIN = 12 V, Io = 0 A - 20 A)0.5%
Output voltage rippleVIN = 12 V, IO = 20 A30mVpp
Output load current020A
Output over current25
Systems Characteristics
Switching frequency608kHz
Peak efficiencyVIN = 12 V, 1.2 V / 12 A, FSW = 300 kHz89.6%
Full-load efficiencyVIN = 12 V, 1.2 V / 20 A88.2%
Operating temperature25°C