TIDUFF4 October   2025

1.   1
2.   Description
3.   Resources
4.   Features
5.   Applications
6.   6
7. 1System Description
   1. 1.1 Key System Specifications
      1. 1.1.1 General TI High Voltage Evaluation User Safety Guidelines
         1. 1.1.1.1 Safety and Precautions
8. 2System Overview
   1. 2.1 Block Diagram
   2. 2.2 Design Considerations
      1. 2.2.1 GaN Power Stage
      2. 2.2.2 Inductor
      3. 2.2.3 Controller
      4. 2.2.4 Cooling
         1. 2.2.4.1 Heat Sink Placement
         2. 2.2.4.2 Via Placement
         3. 2.2.4.3 Copper Block
   3. 2.3 Highlighted Products
      1. 2.3.1 LMG3100R017
      2. 2.3.2 UCD3138A
      3. 2.3.3 TPSM365R6V5
      4. 2.3.4 TMP61
9. 3Hardware, Software, Testing Requirements, and Test Results
   1. 3.1 Hardware Requirements
   2. 3.2 Software Requirements
   3. 3.3 Test Setup
   4. 3.4 Test Results
10. 4Design and Documentation Support
    1. 4.1 Design Files
       1. 4.1.1 Schematics
       2. 4.1.2 BOM
       3. 4.1.3 PCB Layout Recommendations
          1. 4.1.3.1 Power Loop Optimization
          2. 4.1.3.2 Return Current Through Output Power Ground
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
11. 5About the Author

48V–12V GaN-Enabled 2kW Four-Phase Buck Converter, One-Fourth Brick Power Module Reference Design