Should you buy a GaN Power Adapter? Or is it a scam? || Testing GaN FETs!

by GreatScott!

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📚 Main Topics

Introduction to USB Type-C Power Adapters
Understanding GaN (Gallium Nitride) Technology
Comparison of GaN and Traditional Power Adapters
Testing and Measurement of Efficiency
Transistor Comparison: GaN FET vs. MOSFET
Conclusion on GaN Technology

✨ Key Takeaways

USB Type-Cis a popular and versatile charging standard, prompting the search for efficient power adapters.
GaN Technologyis gaining traction in the power electronics industry due to its potential advantages over traditional silicon-based components.
Efficiency MeasurementThe efficiency of power adapters is crucial for consumer savings on electricity bills. The video compares a 65W GaN adapter with a 56.5W traditional adapter.
Performance ResultsThe traditional adapter outperformed the GaN adapter at lower voltages (5V, 9V, and half of 12V), while the GaN adapter excelled at higher voltages (15V and 20V), achieving nearly 90% efficiency.
Transistor TestingThe video includes a detailed comparison of a GaN FET and a traditional MOSFET, focusing on resistance and switching speeds. The GaN FET showed lower resistance and faster switching times, indicating better efficiency.
Buck Converter EfficiencyA practical test using a buck converter circuit demonstrated that the GaN FET achieved slightly better efficiency (77%) compared to the MOSFET (75%).

🧠 Lessons Learned

GaN FETs are not a scamThe video concludes that GaN technology is legitimate and will gradually enhance power electronics.
Importance of Component QualityThe performance of power adapters can vary significantly based on the quality and design of the components used.
Future of Power ElectronicsAs GaN technology matures, it is expected to play a significant role in improving the efficiency and performance of power supplies.

🏁 Final Thoughts

The video encourages viewers to explore GaN technology further and stay informed about advancements in power electronics. It emphasizes the importance of efficiency in power adapters and the potential benefits of adopting newer technologies like GaN.

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