SLVU488A October   2011  – October 2021 TPS54329

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Modifications
    1. 3.1 Output Voltage Setpoint
    2. 3.2 Output Filter and Closed-Loop Response
  5. 4Test Setup and Results
    1. 4.1 Input/Output Connections
    2. 4.2 Start-Up Procedure
    3. 4.3 Efficiency
    4. 4.4 Load Regulation
    5. 4.5 Line Regulation
    6. 4.6 Load Transient Response
    7. 4.7 Output Voltage Ripple
    8. 4.8 Input Voltage Ripple
    9. 4.9 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 TPS54329 is a single, adaptive on-time, D-CAP2™-mode, synchronous buck converter requiring a 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 700 kHz. The high-side and low-side switching MOSFETs are incorporated inside the TPS54329 package along with the gate drive circuitry. The low drain-to-source on-resistance of the MOSFETs allows the TPS54329 to achieve high efficiencies and helps keep the junction temperature low at high-output currents. The TPS54329 dc/dc synchronous converter is designed to provide up to a 2-A output from an input voltage source of 4.5 V to 18 V. The output voltage range is from 0.76 V to 7 V. Rated input voltage and output current range for the evaluation module are given in Table 1-1.

The TPS54329EVM-056 evaluation module circuit is a single, synchronous buck converter providing 1.05 V at 3 A from 4.5-V to 18-V input. This user’s guide describes the TPS54329EVM-056 performance.

Table 1-1 Input Voltage and Output Current Summary
EVMINPUT VOLTAGE RANGEOUTPUT CURRENT RANGE
TPS54329EVM-056VIN = 4.5 V to 18 V0 A to 3 A