SLVUDS8 February   2026

 

  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. 2Performance Specification Summary
  8. 3Output Voltage Setpoint
  9. 4Hardware
    1. 4.1 Test Setup and Results
      1. 4.1.1 Input, Output Connections
      2. 4.1.2 Start-Up Procedure
      3. 4.1.3 Efficiency
      4. 4.1.4 Load Regulation
      5. 4.1.5 Line Regulation
      6. 4.1.6 Load Transient Response
      7. 4.1.7 Start-Up
      8. 4.1.8 Shutdown
      9. 4.1.9 Output Voltage Ripple
  10. 5Hardware Design Files
    1. 5.1 Schematic
    2. 5.2 `PCB Layout
    3. 5.3 Bill of Materials
  11. 6Additional Information
    1. 6.1 Trademarks
  12. 7Reference

1.1 Introduction

In light-load conditions, the TPS563242 operates in Eco-mode to enable higher efficiency by varying the switching frequency, and the TPS563247 operates in FCCM to maintain constant switching frequency. The main difference is at light loading, but the other behaviors are similar. This user's guide mainly introduces the TPS563242 and includes some TPS563247 features that are different from the TPS563242.

The TPS56324x is a single, adaptive on-time, D-CAP3™ control mode, synchronous buck converter that requires a very low external component count. The D-CAP3 control mode circuit is optimized for low-ESR output capacitors such as POSCAP, SP-CAP, or ceramic types and features fast transient response with no external compensation. The switching frequency is internally set at a nominal 1.2MHz. The high-side and low-side switching MOSFETs are incorporated inside the TPS56325x package along with the gate-drive circuitry. The low drain-to-source on resistance of the MOSFETs and fast switching slew rate allow the TPS56324x to achieve high efficiency and help keep the junction temperature low at high output currents. Power sequencing is possible by correctly configuring the enable and power-good indicator. The TPS56325x DC/DC synchronous converter is designed to support up to a 3A continuous current from an input voltage source of 3V to 17V. The output voltage range is from 0.6V to 10V. Table 1-1 gives the rated input voltage and output current ranges for the evaluation module.

Table 1-1 Input Voltage and Output Current Summary
EVM INPUT VOLTAGE (VIN) RANGE OUTPUT CURRENT (IOUT) RANGE
TPS563242EVM VIN = 3V to 17V 0A to 3A
TPS563247EVM

The TPS563242EVM evaluation module (EVM) is a single, synchronous buck converter providing 1.05V at 3A from 3V to 17V input. This user’s guide describes the TPS563242EVM performance.

This user's guide introduces the TPS563242EVM and TPS563247EVM. These two devices differ in the light load behavior. The TPS563242 operates in Eco-mode and the TPS563247 operates in FCCM mode. This user's guide contains information for the TPS563242 and TPS563247 as well as support documentation for the TPS563242EVM and TPS563247EVM evaluation modules. This document also includes the following information for the TPS563242EVM and TPS563247EVM:

  • Performance specifications
  • Board layout
  • Schematic
  • List of materials