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Charles R. Sullivan

Sue and John Ballard '55 TT'56 Professor of Engineering

charles.r.sullivan@dartmouth.edu

Research Interests

Power electronics; electromagnetic design of power electronics components; micro-fabricated magnetic components; nanocomposite magnetic materials; energy efficiency and renewable energy

Education

BS, Electrical Engineering, Princeton University 1987
PhD, Electrical Engineering and Computer Sciences, University of California Berkeley 1996

Awards

IEEE PELS Modeling and Control Technical Achievement Award, 2018
IEEE Fellow, 2014
Sigma Xi, 2001
IEEE Power Electronics Society Prize Paper Award, 2000
National Science Foundation CAREER award, 1999

Professional Activities

Institute of Electrical and Electronics Engineers (IEEE), member
Transactions on Power Electronics, Associate Editor
Power Electronics Society, Member at Large, Administrative Committee
Industry Applications Society, Awards Chair, Power Electronics Devices and Components Committee
Magnetics Society, Industrial Electronics Society

Startups

Resonant Link
Senior Scientist

Research Projects

Microfabricated magnetic components using nanomaterials

Microfabricated magnetic components using nanomaterials

Microfabricated magnetic components using nanomaterials make it possible to miniaturize power-handling magnetic components through taking advantage of the materials' high-flux-density and high-frequency capabilities. We are developing practical methods of depositing these materials and fabricating inductors and transformers on silicon chips or in other technologies.
Passive high-frequency power components

Passive high-frequency power components

Passive high-frequency power components are often the limiting factors in reducing the power loss, size, cost, and weight of high-frequency electronic power converters. Through detailed analysis, modeling, and optimization of high-frequency effects in inductors, transformers, and capacitors, we are improving performance of these components and making it easier to design the efficient, low-cost power electronics needed for a wide range of applications including energy efficiency and renewable energy.

Selected Publications

A. J. Stratakos, C.R. Sullivan, S.R. Sanders, and R.W. Brodersen. "High-Efficiency Low-Voltage DC-DC Conversion for portable applications," in Low-Voltage/Low-Power Integrated Circuits and Systems: Low-Voltage Mixed-Signal Circuits, Edgar Sanchez-Sinencio and Andreas Andreou, Eds. IEEE Press, 1999.
A. J. Stratakos, C.R. Sullivan, S.R. Sanders. "DC Power Supply Design in Portable Systems," in Low Power Digital CMOS Design, A.P. Chandrakasan and R.W. Brodersen, Kluwer Academic Publishers, Boston, 1995.

Patents

Low AC resistant foil winding for magnetic coils on gapped cores | 7,701,317
Method for making magnetic components with N-phase coupling, and related inductor structures | 7,498,920
Low impedance test fixture for impedance measurements | 7,365,550
Method and apparatus for multi-phase DC-DC converters using coupled inductors in discontinuous conduction mode | 7,317,305
Voltage converter with coupled inductive windings, and associated methods | 6,362,986
Circuit for dimming gas discharge lamps without introducing striations | 5,001,386