TIDUF68
February 2024
1
Description
Resources
Features
Applications
6
1
System Description
1.1
Key System Specifications
2
System Overview
2.1
Block Diagram
2.2
Design Considerations
2.3
Highlighted Products
2.3.1
LMG2100
2.3.2
INA241A
2.3.3
LMR38010
3
System Design Theory
3.1
Three-Phase GaN Inverter Power Stage
3.1.1
LMG2100 GaN Half-Bridge Power Stage
3.2
Inline Shunt Precision-Phase Current Sensing With INA241A
3.3
Phase Voltage and DC Input Voltage Sensing
3.4
Power-Stage PCB Temperature Monitor
3.5
Power Management
3.5.1
48V to 5V DC/DC Converter
3.5.2
5V to 3.3V Rail
3.6
Interface to Host MCU
4
Hardware, Software, Testing Requirements, and Test Results
4.1
Hardware Requirements
4.1.1
TIDA-010936 PCB Overview
4.1.2
TIDA-010936 Jumper Settings
4.1.3
Interface to C2000™ MCU LaunchPad™ Development Kit
4.2
Software Requirements
4.3
Test Setup
4.4
Test Results
4.4.1
Power Management and System Power Up and Power Down
4.5
GaN Inverter Half-Bridge Module Switch Node Voltage
4.5.1
Switch Node Voltage Transient Response at 48V DC Bus
4.5.1.1
Output Current at ±1A
4.5.1.2
Output Current at ±10A
4.5.2
Impact of PWM Frequency to DC-Bus Voltage Ripple
4.5.3
Efficiency Measurements
4.5.4
Thermal Analysis
4.5.5
No Load Loss Test (COSS Losses)
5
Design and Documentation Support
5.1
Design Files {Required Topic}
5.1.1
Schematics
5.1.2
BOM
5.1.3
PCB Layout Recommendations
5.1.3.1
Layout Prints
5.1.4
Altium Project
5.1.5
Gerber Files
5.1.6
Assembly Drawings
5.2
Tools and Software
5.3
Documentation Support
5.4
Support Resources
5.5
Trademarks
6
About the Author
7
Recognition
Design Guide
48V, 850W Small Form Factor Three-Phase GaN Inverter Reference Design for Motor Integrated Drives
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