SNVA484B October   2011  – March 2024 LM5113

 

  1.   1
  2.   Description
  3.   IC Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
  6. 2Hardware
    1. 2.1 Powering and Loading Considerations
      1. 2.1.1 Proper Board Connection
      2. 2.1.2 Source Power
      3. 2.1.3 Output Current Derating
      4. 2.1.4 Air Flow
      5. 2.1.5 Quick Start-Up Procedure
  7. 3Implementation Results
    1. 3.1 Performance Characteristics
  8. 448V to 3.3V Conversion
  9. 5Hardware Design Files
    1. 5.1 Evaluation Board Schematic
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  10. 6Additional Information
    1. 6.1 Trademarks
  11. 7Revision History

2.1.4 Air Flow

Sufficient cooling is required to verify a proper and reliable operation. Especially at high line input and full load, most of the power losses are dissipated in the buck switch. Insufficient airflow can cause overheating of the GaN FETs. A minimum airflow of 200CFM must always be provided.