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

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)51xx-Q1 family of automotive synchronous buck controllers from TI provides flexibility, scalability, and optimized design size for a variety of applications.

With the LM5137F-Q1 and LM25137F-Q1 controllers now available to aid in functional safety system design up to ASIL D, the controller family enables DC/DC regulator 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 ControllerSingle or DualVIN RangeControl MethodGate Drive VoltageSync OutputKey Feature
LM5137-Q1Dual4V to 80VPeak current mode5V90° phase shift100% duty cycle
LM5137F-Q1 Dual 4V to 80V Peak current mode 5V 90° phase shift ASIL B or D
LM25137-Q1Dual4V to 42VPeak current mode5V90° phase shift100% duty cycle
LM25137F-Q1 Dual 4V to 42V Peak current mode 5V 90° phase shift ASIL B or D
LM5141-Q1Single3.8V to 65VPeak current mode5VN/ASplit gate drive
LM25141-Q1Single3.8V to 42VPeak current mode5VN/ASplit gate drive
LM5143A-Q1Dual3.5V to 65VPeak current mode5V90° phase shiftSplit gate drive
LM25143-Q1Dual3.5V to 42VPeak current mode5V90° phase shiftSplit gate drive
LM5145-Q1Single5.5V to 75VVoltage mode7.5V180° phase shiftNo shunt
LM5146-Q1Single5.5V to 100VVoltage mode7.5V180° phase shift100V input capabiity
LM5148-Q1Single3.5V to 80VPeak current mode5V180° phase shiftDRSS
LM25148-Q1Single3.5V to 42VPeak current mode5V180° phase shiftDRSS
LM5149-Q1Single3.5V to 80VPeak current mode5V180° phase shiftAEF
LM25149-Q1Single3.5V to 42VPeak current mode5V180° phase shiftAEF
LM5190-Q1 Single 5V to 80V Peak current mode 7.5V N/A CC/CV
LM25190-Q1 Single 5V to 42V Peak current mode 7.5V N/A CC/CV

The LM5137-Q1 and LM5137F-Q1, which are the TI Functional-Safety capable and compliant (ASIL B and ASIL D) versions, respectively, are available in a 36-pin VQFN package with 6mm × 6mm footprint to enable DC/DC regulator designs with high density and low component count.

Use the LM5137(F)-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(F)-Q1 quickstart calculator.