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

4.2 Board Layout

Figure 4-2 through Figure 4-7 show the LM251772EVM-PD PCB design.

LM251772 Top SilkscreenFigure 4-2 Top Silkscreen
LM251772 Bottom SilkscreenFigure 4-3 Bottom Silkscreen
LM251772 Top LayerFigure 4-4 Top Layer
LM251772 Mid-Layer 1Figure 4-5 Mid-Layer 1
LM251772 Mid-Layer 2Figure 4-6 Mid-Layer 2
LM251772 Bottom LayerFigure 4-7 Bottom Layer
Note:

On the PCB SR135A, capacitor C42 has a layout issue and is soldered directly to Q5.