SNVU935 March   2025 LM251772

 

  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 Specification
    4. 1.4 Device Information
  8. 2Hardware Connector, Test Point, and Selection Switch Descriptions
    1. 2.1 Connector Descriptions
    2. 2.2 Jumper Descriptions
    3. 2.3 Test Point Descriptions
  9. 3Implementation Results
    1. 3.1 Test Setup
    2. 3.2 Test Procedure
    3. 3.3 Precautions
    4. 3.4 Test Data and Performance Curves
      1. 3.4.1 Thermal Performance
      2. 3.4.2 Efficiency
      3. 3.4.3 Steady State Waveforms
      4. 3.4.4 Step Load Response
      5. 3.4.5 AC Loop Response Curves
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 Board Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1.     Trademarks

1.1 Introduction

The LM251772EVM-PD evaluation module (EVM) is designed to conveniently evaluate the performance of the LM251772 wide-VIN buck-boost controller. The LM251772 is a wide-VIN four switch buck-boost controller. The device provides a regulated output voltage if the input voltage is higher, equal to or lower as the adjusted output voltage. In power safe mode, the device supports superb efficiency over the full range of the output.

Through the optional usage of the I2C interface, the device covers additional parameters for configuration and adjustments of the switch mode power supply operation.

To check the performance, the I2C interface also allows for easy access to measure the typical signals of a buck-boost controller.