SNVU891 February   2025

 

  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

1.3.1 Application Circuit Diagrams

Figure 1-1 shows an LM5137-Q1 synchronous buck regulator (not including the EMI filter stage). Furthermore, as shown in Figure 1-2, the user can implement a dual-output buck regulator by removing the shorting element connecting the two phases, revising the components at COMP1, COMP2, FB1, and FB2 as needed, and setting the CNFG resistor to 10kΩ.

LM5137F-Q1-EVM12V LM5137-Q1 Two-Phase, Single-Output, Synchronous Buck Regulator Simplified Schematic Figure 1-1 LM5137-Q1 Two-Phase, Single-Output, Synchronous Buck Regulator Simplified Schematic
LM5137F-Q1-EVM12V LM5137-Q1 Dual-Output, Synchronous, Buck Regulator Simplified Schematic Figure 1-2 LM5137-Q1 Dual-Output, Synchronous, Buck Regulator Simplified Schematic