F
Fred C. Lee
Researcher at Virginia Tech
Publications - 757
Citations - 30033
Fred C. Lee is an academic researcher from Virginia Tech. The author has contributed to research in topics: Inductor & Power factor. The author has an hindex of 85, co-authored 737 publications receiving 27424 citations. Previous affiliations of Fred C. Lee include Delta Electronics.
Papers
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Journal ArticleDOI
Evaluation and Application of 600 V GaN HEMT in Cascode Structure
TL;DR: In this article, the characteristics and operation principles of a 600 V cascode GaN HEMT were studied and compared with a state-of-the-art silicon MOSFET.
Journal ArticleDOI
Tapped-inductor buck converter for high-step-down DC-DC conversion
TL;DR: In this paper, a simple lossless clamp circuit is proposed to clamp the switch turn-off voltage spike and totally recover the leakage energy in the buck converter. But the circuit is not simple and the gate drive for the top switch is also not simple due to its floating source connection.
Journal ArticleDOI
Effects of parasitic parameters on EMI filter performance
TL;DR: In this paper, the authors examined the effects of parasitic couplings among the filter components and the coupling between the filter component and the ground plane of printed circuit board (PCB).
Proceedings ArticleDOI
Single-phase three-level boost power factor correction converter
TL;DR: In this article, a three-level boost converter is adopted for single-phase PFC, which uses a much smaller inductor and lower voltage devices than the conventional boost PFC converter does, yielding high power density, high efficiency and low cost.
Journal ArticleDOI
A novel current-sharing control technique for low-voltage high-current voltage regulator module applications
Xunwei Zhou,Peng Xu,Fred C. Lee +2 more
TL;DR: In this article, a novel current-sensing and current-sharing technique is proposed for interleaved quasisquare-wave (QSW) VRM topologies, which can be controlled simply in parallel converters without a current transformer and current sensing resistors.