SNVU907A July   2024  – August 2024 LM5137-Q1 , 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 Startup/Shutdown With VIN
        3. 3.1.2.3 Startup/Shutdown With ENABLE ON and OFF
        4. 3.1.2.4 Switching
      3. 3.1.3 Thermal Performance
  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 PCB Layout Resources
        2. 6.2.1.2 Thermal Design Resources
  13. 7Revision History

1.4 Device Information

With an input operating voltage as low as 3.5V and up to 100V as specified in Table 1-2, the LM(2)514x-Q1 family of automotive synchronous buck controllers from TI provides flexibility, scalability, and optimized design size for a variety of applications.

With the LM5137-Q1 and LM25137-Q1 now available to aid in functional safety system design up to ASIL D, the controller family enables DC/DC designs with high density, low EMI and increased system reliability. All controllers are rated for a maximum operating junction temperature of 150°C and have AEC-Q100 grade 1 qualification.

Table 1-2 Automotive Synchronous Buck DC/DC Controller Family
DC/DC Controller Single or Dual VIN Range Control Method Gate Drive Voltage Sync Output Programmable
Spread Spectrum
LM5137-Q1 Dual 4V to 80V Peak current mode 5V 90° phase shift DRSS (5% or 10%)
LM25137-Q1 Dual 4V to 42V Peak current mode 5V 90° phase shift DRSS (5% or 10%)
LM5140-Q1 Dual 3.8V to 65V Peak current mode 5V 180° phase shift N/A
LM5141-Q1 Single 3.8V to 65V Peak current mode 5V N/A Triangular
LM25141-Q1 Single 3.8V to 42V Peak current mode 5V N/A Triangular
LM5143A-Q1 Dual 3.5V to 65V Peak current mode 5V 90° phase shift Triangular
LM25143-Q1 Dual 3.5V to 42V Peak current mode 5V 90° phase shift Triangular
LM5145-Q1 Single 5.5V to 75V Voltage mode 7.5V 180° phase shift N/A
LM5146-Q1 Single 5.5V to 100V Voltage mode 7.5V 180° phase shift N/A
LM5148-Q1 Single 3.5V to 80V Peak current mode 5V 180° phase shift DRSS
LM25148-Q1 Single 3.5V to 42V Peak current mode 5V 180° phase shift DRSS
LM5149-Q1 Single 3.5V to 80V Peak current mode 5V 180° phase shift DRSS
LM25149-Q1 Single 3.5V to 42V Peak current mode 5V 180° phase shift DRSS

The LM25137-Q1 is available in a 36-pin VQFN package with 6mm × 6mm footprint to enable DC/DC designs with high density and low component count. Use the LM25137-Q1 with WEBENCH® Power Designer to create a custom regulator design. To optimize component selection and examine predicted efficiency performance across line and load ranges, download the LM(2)5137-Q1 quickstart calculator.