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  • LM644A2QEVM-S2100T 36V, 12A, Single-Output, Dual-Phase, Synchronous Buck Converter Evaluation Board

    • SLVUCX4 October   2024

       

  • CONTENTS
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  • LM644A2QEVM-S2100T 36V, 12A, Single-Output, Dual-Phase, Synchronous Buck Converter Evaluation Board
  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 EVM Connections
    2. 2.2 Test Equipment
    3. 2.3 EVM Setup
      1. 2.3.1 Input Connections
      2. 2.3.2 Output Connections
      3. 2.3.3 Heat Sink Setup
  8. 3Implementation Results
    1. 3.1 Test Data and Performance Curves
      1. 3.1.1 Efficiency and Load Regulation Performance
      2. 3.1.2 Waveforms and Plots
      3. 3.1.3 EMI Performance
      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. 5Additional Information
    1. 5.1 Trademarks
  11. 6Device and Documentation Support
    1. 6.1 Device Support
      1. 6.1.1 Development Support
        1. 6.1.1.1 Custom Design With WEBENCH® Tools
    2. 6.2 Documentation Support
      1. 6.2.1 Related Documentation
  12. IMPORTANT NOTICE
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EVM User's Guide

LM644A2QEVM-S2100T 36V, 12A, Single-Output, Dual-Phase, Synchronous Buck Converter Evaluation Board

Description

The LM644A2QEVM-S2100T evaluation board showcases the features and performance of the LM644A2-Q1, dual buck DC/DC converter with integrated power MOSFETs. The EVM provides a single 12A output with dual-phase interleaved configuration. The output voltages can be programmed to a fixed 3.3V, 5V or adjustable using external feedback resistors.

Features

  • 12A output dual-phase interleaved synchronous buck converter
  • Wide operating range of up to 36V
  • Default output voltage: 3.3V
  • Default switching frequency: 2.1MHz
  • High efficiency across a wide load-current range
  • Input EMI filter with electrolytic capacitor for parallel damping (input filter can handle up to 8A input current)
  • Clock synchronization and FPWM mode provide constant switching frequency across the full load range
  • Integrated input capacitors enable low-noise switching performance
  • Pin selectable spread spectrum
  • Peak current-mode control architecture with external loop compensation.
  • Peak current limiting with hiccup-mode overcurrent protection
  • Thermal shutdown protection with hysteresis
  • PGOOD indicator
  • Programmable input UVLO
  • 6-layer, 2-oz PC board design with mountable converter heat sink (heat sink provided)

Applications

  • Automotive infotainment and cluster: head unit, media hub, USB charging, information display
  • Automotive ADAS and body electronics
  • General-purpose dual buck converters

LM644A2QEVM-S2100T LM644A2QEVM-S2100T (Top View)LM644A2QEVM-S2100T (Top View)
LM644A2QEVM-S2100T LM644A2QEVM-S2100T (Bottom View)LM644A2QEVM-S2100T (Bottom View)

 
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