SLUUCZ1 July   2024 TPS546C25

 

  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

2.1.5 Configuring EVM to Overdrive VDRV

The EVM has a terminal connection J4 that is used to overdrive the VDRV. The output of the internal regulator is set for 4.5V by default. Using the external supply is useful to minimize the power dissipation in the TPS546C25 IC when operating at high switching frequency. Overdriving the VDRV moves the loss from the internal regulator of the TPS546C25 to the external supply. To use the external supply, follow the steps on the EVM as follows:

  1. Connect external supply to J4 and set external supply to between 4.5V to 5.5V.
  2. Power up the external supply to overdrive VDRV, then power up PVIN .