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  • LM5137F-Q1 12V, 20A Single-Output Evaluation Module

    • SNVU891 February   2025 LM5137-Q1 , LM5137F-Q1

       

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  • LM5137F-Q1 12V, 20A Single-Output Evaluation Module
  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specifications
      1. 1.3.1 Application Circuit Diagrams
    4. 1.4 Device Information
  8. 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
  9. 3Implementation Results
    1. 3.1 Test Data and Performance Curves
      1. 3.1.1 Efficiency
      2. 3.1.2 Operating Waveforms
        1. 3.1.2.1 Load Transient Response
        2. 3.1.2.2 Start-Up and Shutdown With VIN
        3. 3.1.2.3 Start-Up and Shutdown With ENABLE ON and OFF
        4. 3.1.2.4 Switching Operation
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
      1. 4.2.1 Component Drawings
      2. 4.2.2 Layout Guidelines
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6Device and Documentation Support
    1. 6.1 Device Support
      1. 6.1.1 Development Support
    2. 6.2 Documentation Support
      1. 6.2.1 Related Documentation
        1. 6.2.1.1 Low-EMI Design Resources
        2. 6.2.1.2 PCB Layout Resources
        3. 6.2.1.3 Thermal Design Resources
  13. IMPORTANT NOTICE
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EVM User's Guide

LM5137F-Q1 12V, 20A Single-Output Evaluation Module

Description

The LM5137F-Q1-EVM12V evaluation module (EVM) is designed to showcase the LM5137F-Q1 synchronous, buck controller, which is intended for functional safety applications up to ASIL D. The EVM operates as a two-phase interleaved design over an input voltage range of 36V to 72V to deliver a 12V regulated output at up to 20A.

Get Started

  1. Order the LM5137F-Q1-EVM12V.
  2. Refer to the LM5137F-Q1 and LM5137-Q1 product folders.
  3. Review the Altium PCB layout source files.
  4. Use the LM5137F-Q1 quickstart calculator to assist with component selection in your design.
  5. Simulate the design using PSPICE or SIMPLIS.

Features

  • Maximum input voltage of 72V
    • VIN UVLO thresholds set at 42V (on), 36V (off)
  • Tightly regulated output voltage of 12V rated at 20A with 1mV load and line regulation
  • High efficiency: 95.5% at 48VIN, 20AOUT
    • VCC bias power derived from the 12V output
  • Switching frequency of 400kHz synchronizable ±20% with an external clock signal
  • Input π-stage EMI filter helps meet CISPR 25
    • Spread spectrum (DRSS) option for lower electromagnetic interference (EMI)
    • Electrolytic capacitor for parallel damping
  • Peak current-mode control architecture provides fast line and load transient response
    • Integrated slope compensation
    • Forced PWM (FPWM) or pulsed frequency modulation (PFM) mode operation
  • Integrated power MOSFET gate drivers
    • 3A sink, 2A source gate drive current capability
    • Adaptive deadtime control reduces power dissipation and MOSFET temperature rise
  • Integrated protection features for robust design
    • Overcurrent protection (OCP) with shunt or inductor DCR current sensing
    • Monotonic prebias output voltage start-up
    • User-adjustable soft-start time set to 4.5ms
    • PG and FAULT outputs for each channel
    • Current monitor output (IMON1, IMON2)
  • Fully assembled, tested and proven PCB layout with 3.3" × 2.9" (84mm × 74mm) total footprint

 
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