SNVU891 February   2025 LM25137 , LM25137-Q1 , LM25137F-Q1 , LM5137 , LM5137-Q1 , LM5137F , LM5137F-Q1

 

  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

2.1.1 EVM Connections

Referencing the EVM connections described in Table 2-1, Figure 2-1 shows the recommended test setup to evaluate the LM5137F-Q1-EVM12V. Working at an ESD-protected workstation, verify that any wrist straps, boot straps, or mats are connected and referencing the user to earth ground before handling the EVM.

LM5137F-Q1-EVM12V EVM Test Setup Figure 2-1 EVM Test Setup
Table 2-1 EVM Power Connections
LABELDESCRIPTION
VINPositive input voltage power and sense connection
GNDNegative input voltage power and sense connection
VOUT1Positive output voltage power and sense connection
GNDNegative output voltage power and sense connection
Table 2-2 EVM Signal Connections
LABELDESCRIPTION
PGNDGND connection
EN1, EN2ENABLE inputs – tie to GND to disable the respective phase
PG1, PG2Power-Good outputs (only PG1 is active in two-phase mode)
FAULT1, FAULT2FAULT outputs
SYNCOUTSynchronization output
VCCBias rail connection
PFM/SYNCINSynchronization input
IMON1, IMON2Current monitor outputs
Note:

Refer to the LM5137-Q1 Automotive, 4V to 80V, 100% Duty Cycle Capable, Dual-Channel Synchronous Buck Controller data sheet, quickstart calculator, and WEBENCH® Power Designer for additional guidance pertaining to component selection and controller operation.