SLUUCZ5 December   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Test Setup and Procedure
      1. 2.1.1 EVM Connections
      2. 2.1.2 Test Equipment
      3. 2.1.3 Recommended Test Setup
        1. 2.1.3.1 Input Connections
        2. 2.1.3.2 Output connections
      4. 2.1.4 Test Procedure
        1. 2.1.4.1 Line and Load Regulation, Efficiency
  8. 3Implementation Results
    1. 3.1 Performance Data and Results
      1. 3.1.1 EVM Characteristics
      2. 3.1.2 Conversion Efficiency
      3. 3.1.3 Operating Waveforms
        1. 3.1.3.1 Start-Up and Shutdown with EN
        2. 3.1.3.2 Start-Up with VIN
        3. 3.1.3.3 Load Transient Response
        4. 3.1.3.4 Output Voltage Ripple
      4. 3.1.4 Thermal Performance
  9. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  10. 5Compliance Information
    1. 5.1 Compliance and Certifications
  11. 6Additional Information
    1. 6.1 Trademarks
  12. 7Related Documentation

1.1 Introduction

The TPS54538 is a single, PCM™ control mode, synchronous buck converter requiring a very low external component count. The TPS54538 synchronous buck converter used in the EVM has the following features:

  • 3.8V to 28V input voltage range
  • 0.6V to 22V output voltage range
  • Integrated 47mΩ/ 21mΩ MOSFET
  • Support 5A continuous output current
  • Non-latched protections for OTP, OCP, OVP, UVP, and UVLO
  • 0.6V±1.0% output voltage accuracy
  • Selectable adjustable soft-start time (1- 10ms)/PG function (fixed soft start time)
  • Selectable switching frequency of 200kHz and 2200kHz
  • Selectable Eco-mode™ and FCCM™ mode under light load operation

This user's guide describes the characteristics, operation, performance, and use of the Texas Instruments' TPS54538 evaluation module (EVM). The TPS54538EVM is designed to help user easily evaluate and test the operation and functionality of the TPS54538. This user's guide includes the following:

  • Setup instructions for the hardware
  • Printed-circuit board layouts for the EVM
  • Schematic diagram
  • Bills of material
  • Test results for the EVM