TIDUF22
January
2023
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Description
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Resources
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Features
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Applications
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5
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1System Description
- 1.1
Key System Specifications
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2System Overview
- 2.1
Block Diagram
- 2.2
Design Considerations
- 2.2.1
6-W Auxiliary Power Supply
- 2.2.2
AC Input Current Sensing
- 2.2.3
DC Bus Voltage Sensing
- 2.2.4
AC Input Voltage Sensing
- 2.2.5
GaN Driving
- 2.2.6
Inrush Current Protection at Powering On
- 2.2.7
Overcurrent Protection
- 2.2.8
AC Input Undervoltage Protection
- 2.2.9
DC Bus Overvoltage Protection
- 2.2.10
GaN Temperature Monitor and Protection
- 2.2.11
Heat Sink Temperature Monitor and Protection
- 2.2.12
UART Heartbeat Report
- 2.2.13
Motor Control Interface
- 2.3
Highlighted Products
- 2.3.1
LMG352xR030
- 2.3.2
TMS320F28002x
- 2.3.3
UCC2871x
- 2.3.4
TLV906x
- 2.3.5
TPS54308
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3Hardware, Software, Testing Requirements, and Test Results
- 3.1
Hardware Requirements and Assembly
- 3.1.1
Test Equipment Requirements
- 3.2
Software Requirements
- 3.3
Test Setup
- 3.4
Test Results
- 3.4.1
Test Procedures
- 3.4.1.1
Test Procedures Under 90 VAC
- 3.4.1.2
Test Procedures Under 220 VAC
- 3.5
Performance Data: Efficiency, iTHD, and Power Factor
- 3.6
Functional Waveforms
- 3.6.1
Test Under 90 VAC, 800-Ω Load
- 3.6.2
Power-On Sequence Test Under 220 VAC
- 3.6.3
Waveform With Heavy Load
- 3.6.4
Buck Auxiliary Power Supply Tests
- 3.6.5
AC Drop Test
- 3.6.6
GaN Switching Performance
- 3.6.7
Thermal Test
- 3.6.8
Power-Off Sequence
- 3.6.9
Surge Test
- 3.6.10
Conducted Emission Test
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4Design and Documentation Support
- 4.1
Design Files
- 4.1.1
Schematics
- 4.1.2
BOM
- 4.2
Documentation Support
- 4.3
Support Resources
- 4.4
Trademarks
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5About the Author
4.2 Documentation Support
- Texas Instruments, LMG352xR030-Q1 650-V
30-mΩ GaN FET with Integrated Driver, Protection,
and Temperature Reporting data
sheet
- Texas Instruments, TMS320F28002x Real-Time
Microcontrollers data sheet
- Texas Instruments, AMC3302 High-Precision,
±50-mV Input,Reinforced Isolated Amplifier With
Integrated DC/DC Converter data
sheet
- Texas Instruments, UCC2871x
Constant-Voltage, Constant-Current Controller With
Primary-Side Regulation data sheet
- Texas Instruments, UCC2871x
Constant-Voltage, Constant-Current Controller With
Primary-Side Regulation data sheet
- Texas Instruments, ISO772x High-Speed,
Robust EMC, Reinforced and Basic Dual-Channel
Digital Isolators data sheet