SLUUCZ3A July   2024  – March 2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Test Setup
      1. 2.1.1 Test and Configuration Software
        1. 2.1.1.1 Description
        2. 2.1.1.2 Features
      2. 2.1.2 Test Equipment
        1. 2.1.2.1 Voltage Source
        2. 2.1.2.2 Multimeters
        3. 2.1.2.3 Output Load
        4. 2.1.2.4 Oscilloscope
        5. 2.1.2.5 Fan
        6. 2.1.2.6 USB-to-GPIO Interface Adapter:
        7. 2.1.2.7 Recommended Wire Gauge
      3. 2.1.3 Tip and Barrel Measurement
      4. 2.1.4 List of Test Points, Jumpers, and Connectors
      5. 2.1.5 Configuring EVM to Overdrive VDRV
    2. 2.2 Best Practices
  9. 3Software
    1. 3.1 EVM Configuration Using the Fusion GUI
      1. 3.1.1 Configuration Procedure
    2. 3.2 Using the Fusion GUI
      1. 3.2.1 Opening the Fusion GUI
      2. 3.2.2 Changing ON_OFF_CONFIG
      3. 3.2.3 SMBALERT# Mask
      4. 3.2.4 All Config
      5. 3.2.5 Pin Strapping
      6. 3.2.6 Monitor
      7. 3.2.7 Status
  10. 4Implementation Results
    1. 4.1 Test Procedure
      1. 4.1.1 Line and Load Regulation and Efficiency Measurement Procedure
      2. 4.1.2 Efficiency Measurement Test Points
      3. 4.1.3 Control Loop Gain and Phase Measurement Procedure
    2. 4.2 Performance Data and Typical Characteristic Curves
      1. 4.2.1 Efficiency
      2. 4.2.2 Transient Response
      3. 4.2.3 Control Loop Bode Plot
      4. 4.2.4 Output Ripple
      5. 4.2.5 Control On
      6. 4.2.6 Control Off
      7. 4.2.7 Control On With Prebiased Output
      8. 4.2.8 Thermal Image
  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. 6.1 Trademarks
  13. 7Revision History

1.3 Specification

Table 1-1 lists the electrical performance specifications in room temperature (20 to 25°C). Characteristics are for an input voltage of VIN = 12V, unless otherwise specified.

Table 1-1 TPS546E25EVM-1PH Electrical Performance Specifications
Parameter Test Conditions MIN TYP MAX Unit
Input Characteristics
Input voltage range, VIN 10.8 12 13.2 V
Full load input current IOUT = 50A 6.18 A
No load input current IOUT = 0A, switching enabled 65.2 mA
Enable switching threshold Set by default resistor divider, JP2 pins 3 and 4 shorted 1.2 V
Disable switching threshold Set by default resistor divider, JP2 pins 3 and 4 shorted 1 V
Output Characteristics
Output voltage, VOUT 1.2 V
Output load current, IOUT 0 50 A
Output voltage ripple IOUT = 25A 5.04 mVpp
Output overcurrent fault threshold Current limit setting programmed by MSEL1 J12 pins 3 – 4 shorted 100 %
Systems Characteristics
Switching frequency Programmed by MSEL2 J13 pins 11 – 12 800 kHz
Full load efficiency, VOUT = 1.2V IOUT = 50A 81.6 %
Operating case temperature IOUT = 50A, 10 minute soak 118 °C
Loop bandwidth IOUT = 50A 45.4 kHz
Phase margin 40.4 °
PMBus Interface and Pin-Strapping
PMBus address Programmed by PMB_ADDR J14 pins 1 – 2 shorted 11 h
Voltage reference Default setting by VSEL J15 pins 5 – 6 1.2 V
Soft-start time (TON_RISE) Default setting of TON_RISE programmed by MSEL1 J12 pins 7 – 8 shorted 2 ms