SLVU642A May   2012  – August 2021 TPS54526

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Modifications
    1. 3.1 Output Voltage Set Point
  5. 4Test Setup and Results
    1. 4.1  Input / Output Connections
    2. 4.2  Start-Up Procedure
    3. 4.3  Efficiency
    4. 4.4  Light-Load Efficiency
    5. 4.5  Load Regulation
    6. 4.6  Line Regulation
    7. 4.7  Load Transient Response
    8. 4.8  Output Voltage Ripple
    9. 4.9  Input Voltage Ripple
    10. 4.10 Start-Up
  6. 5Board Layout
    1. 5.1 Layout
  7. 6Schematic, Bill of Materials and Reference
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
    3. 6.3 Reference
  8. 7Revision History

Introduction

The TPS54526 is a single, adaptive on-time D-CAP2™ mode synchronous buck converter requiring a very low external component count. The D-CAP2™ control 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 650 kHz. The high-side and low-side switching MOSFETs are incorporated inside the TPS54526 package along with the gate drive circuitry. The low drain-to-source on resistance of the MOSFETs allows the TPS54526 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The TPS54526 also has an auto-skip Eco-mode™ to enable higher efficiency at light loads. The TPS54526 DC/DC synchronous converter is designed to provide up to a 5.5-A output from an input voltage source of 4.5 V to 18 V. The output voltage range is from 0.76 V to 5.5 V. The voltage and output current ranges for the evaluation module are given in Table 1-1.

Table 1-1 Input Voltage and Output Current Summary
EVMINPUT VOLTAGE RANGEOUTPUT CURRENT RANGE
TPS54526EVM-538VIN = 4.5 V to 18 V0 A to 5.5 A