SNVU736 September   2020 LM51561H , LM51561H-Q1 , LM5156H , LM5156H-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications Schematic
    3. 1.3 Electrical Parameters
  3. 2EVM Setup
    1. 2.1 EVM Connectors and Test Points
  4. 3Testing Procedures
    1. 3.1 Testing Equipment
    2. 3.2 Precautions
  5. 4Test Results
    1. 4.1 Efficiency Curve
    2. 4.2 Load Regulation
    3. 4.3 Thermal Performance
    4. 4.4 Steady State Waveforms
    5. 4.5 Start-up Waveforms
    6. 4.6 Load Transient Waveforms
    7. 4.7 Load Short-Circuit
    8. 4.8 AC Loop Response
  6. 5PCB Layout
  7. 6Schematics
  8. 7Bill of Materials

1.1 Features

The LM5156HEVM-FLY supports the following features and performance capabilities:

  • Tightly regulated output voltage of 5 V
  • High conversion efficiency of > 86% at full load.
  • Hiccup mode short-circuit protection
  • User adjustable secondary side soft-start time
  • 10-V auxiliary winding to power VCC pin
  • 250-kHz switching frequency
  • 2-layer PCB with components populated on 1 side