SNVU793 September   2021 LM5158

 

  1.   Trademarks
  2. 1Introduction
  3. 2Electrical Parameters
  4. 3Application Schematic
  5. 4EVM Picture
  6. 5Test Setup and Procedure
    1. 5.1 EVM Test Setup Schematic
    2. 5.2 Test Equipment
  7. 6Test Data and Performance Curves
    1. 6.1 Efficiency
    2. 6.2 Output Regulation
    3. 6.3 Steady-State Waveforms
    4. 6.4 Start-Up Waveforms
    5. 6.5 Dynamic Responses
    6. 6.6 Short-Circuit Protection
    7. 6.7 Bode Plots
    8. 6.8 Thermal Image
  8. 7Schematic
  9. 8Bill of Materials
  10. 9EVM Layout

1 Introduction

The LM5158EVM-FLY supports the following features and performance capabilities:

  • Tightly regulated main output voltage: VO1 = 10 V ±1%
  • Three cross-regulated, isolated output voltages:
    • VO2 = 20 V
    • VO3 = 20 V
    • VO4 = 20 V
  • Total rated load of 8.5 W:
    • 250 mA at VO1
    • 75 mA at VO2
    • 75 mA at VO3
    • 150 mA at VO4
  • Peak efficiency > 90%
  • Optional hiccup mode overloading protection
  • 250-kHz switching frequency
  • 2-layer PCB, 3.5 in × 2.3 in