Juan Rivas-Davila
Associate Professor of Electrical Engineering
Web page: http://web.stanford.edu/people/jmrivas
Bio
Juan Rivas is an Associate Professor at Stanford’s Electrical Engineering department. Before, he worked for GE Global Research in the high-frequency power electronics group. He has extensive experience in the design of dc-dc power converters working at MHz frequencies. He has published peer-reviewed work on power converters reaching up to 100 MHz using Si and WBG devices. He obtained his doctoral degree from MIT in 2006. His research interests include power electronics, resonant converters, resonant gate drive techniques, high-frequency magnetics, and finding new applications for power converters
Academic Appointments
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Associate Professor, Electrical Engineering
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Member, Cardiovascular Institute
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Member, Wu Tsai Neurosciences Institute
Honors & Awards
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Best Paper: HF Bidirectional Resonant Converter for High Conversion Ratio & Variable Load Operation, Control and Modeling for Power Electronics Workshop (2018)
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Faculty Early Career Development (CAREER) Program”, National Science Foundation (2013)
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Best Paper Award: "13.56 MHz high voltage multi-level resonant DC-DC converter", Control and Modeling for Power Electronics Workshop (2015)
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Transactions Paper Award: "Resistance Compression Networks for Radio-Frequency Power conversion", IEEE Power Electronics Society (2007)
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2nd Prize Award: High Frequency Resonant SEPIC Converter With Wide Input and Output Voltage Ranges'', IEEE Power Electronics Society (2012)
Program Affiliations
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Stanford SystemX Alliance
Professional Education
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B.A., ITESM, Mexico City Campus, Electrical and Communications Engineering (1998)
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S.M., Massachusetts Institute of Technology, Output Power Increase at Idle Speed in Alternators (2003)
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Sc.D., Massachusetts Institute of Technology, Radio Frequency dc-dc Power Conversion (2006)
Patents
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Juan M. Rivas Davila, Wei Liang, Luke C. Raymond. "United States Patent US11,031,179B2 Passive Components For Electronic Circuits Using Conformal Deposition on a Scaffold", The Board of Trustees of the Leland Stanford Junior University, Jun 8, 2021
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Luke C. Raymond, Wei Liang, Juan M. Rivas Davila. "United States Patent US10218276B2 Isolated Multi-Level Resonant Topologies for Wide-Range Power Conversion and Impedance Matching", Leland Stanford Junior University, Feb 26, 2019
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John R. Goscha, Victor D. Roberts, Juan Manuel Rivas-Davila, Luke Christopher Raymond. "United States Patent 9,305,765B2 High frequency induction lighting", Lucidity Lights, Inc., Apr 5, 2016
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Juan Manuel Rivas Davila, Randall Henry Buchwald. "United States Patent 8,829,905 B2 Magnetic resonance imaging compatible switched mode power supply", General Electric Company, Sep 9, 2014
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Juan Manuel Rivas Davila, Ljubisa Dragoljub Stevanovic, Juan Antonio Sabate. "United States Patent 8,760,164 Magnetic resonant imaging gradient driver architecture", General Electric Company, Jun 24, 2014
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Satish Prabhakaran, John Stanley Glaser, Ljubisa Dragoljub Stevanovic, Juan Manuel Rivas Davila. "United States Patent US 8567046 B2 Methods for making magnetic components", General Electric Company, Oct 29, 2013
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Rixin Lai, Luis Jose Garces, Juan Antonio Sabate, Juan Manuel Rivas Davila, Song Chi, Wesley Michael Skeffington,. "United States Patent US 8502539 B2 Gradient amplifier system", General Electric Company, Jul 31, 2013
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Mehmet Arik, Tunc Icoz, Juan Manuel Rivas Davila, Charles Erklin Seeley, Yogen Vishwas Utturkar, Stanton Earl Weaver, Jr.. "United States Patent US 8496049 B2 Heat sinks with distributed and integrated jet cooling", General Electric Company, Jul 30, 2013
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John Stanley Glaser, Juan Manuel Rivas Davila. "United States Patent US 7924580 B2 Switching inverters and converters for power conversion", General Electric Company, Apr 12, 2011
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David J. Perreault, Juan M. Rivas, Anthony D. Sagneri, Olivia Leitermann, Yehui Han, Robert C. N. Pilawa-Podgurski,. "United States Patent 7,889,519 B2 Methods and apparatus for a resonant converter", Massachusetts Institute Of Technology, Feb 15, 2011
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David J. Perreault, Juan M. Rivas, Yehui Han, Olivia Leitermann. "United States Patent 7535133 B2 Methods and apparatus for resistance compression networks", Massachusetts Institute Of Technology, May 19, 2009
Current Research and Scholarly Interests
Modern applications are driving demand for power systems with capabilities beyond what is presently achievable. High performance systems, like medical imaging systems and other applications impose challenging specifications on power density and bandwidth that are difficult to achieve with current circuit topologies. Power density can be improved with better semiconductor components and passive elements, and by reducing the energy storage requirements of the system. By dramatically increasing the switching frequency, it is possible to reduce the energy storage requirements and improve bandwidth. I'm interested in the development of system architectures and circuit topologies for dc-ac and dc-dc power conversion that can reach switching frequencies of 10’s to 100’s of MHz. Switching at these frequencies will lead to efficient converters with inductors and transformers having no magnetic material to limit their high frequency performance, and with small-valued capacitors.
At these switching frequencies, all inductors can be air-cored, eliminating core losses, saturation, and extending their operating temperature range. I have been involved in the development of dc-dc converter that archives a significant reduction in peak switch voltage stress, requires small passive components with low energy storage, and provides the capability for extremely rapid startup and shutdown.
Another goal of my work is to implement a value-added strategy in inexpensive printed circuit boards (PCB) by fabricating all passive devices of a power converter (inductors and capacitors) with traces, transforming the PCB into a 3-D resonant structure. This approach will eliminate tuning and component variation while simultaneously maintaining extraordinary levels of performance at reduced cost. Moreover, there a lot of exciting applications for these high frequency circuits.
2024-25 Courses
- Advanced Topics in Power Electronics
EE 254 (Aut) - Circuits I
EE 101A (Win) - Power Electronics
EE 153, EE 253 (Spr) -
Independent Studies (7)
- Directed Reading
INTLPOL 299 (Aut, Sum) - Master's Thesis and Thesis Research
EE 300 (Aut, Win, Spr, Sum) - Special Studies and Reports in Electrical Engineering
EE 191 (Aut, Win, Spr, Sum) - Special Studies and Reports in Electrical Engineering
EE 391 (Aut, Win, Spr, Sum) - Special Studies and Reports in Electrical Engineering (WIM)
EE 191W (Aut, Win, Spr, Sum) - Special Studies or Projects in Electrical Engineering
EE 190 (Aut, Win, Spr, Sum) - Special Studies or Projects in Electrical Engineering
EE 390 (Aut, Win, Spr, Sum)
- Directed Reading
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Prior Year Courses
2023-24 Courses
- Power Electronics
EE 153, EE 253 (Spr) - Resonant Converters
EE 356A (Aut)
2022-23 Courses
- Advanced Topics in Power Electronics
EE 254 (Spr) - An Intro to Making: What is EE
ENGR 40M (Win) - Power Electronics
EE 153, EE 253 (Aut)
2021-22 Courses
- Advanced Topics in Power Electronics
EE 254 (Win) - Magnetics Design in Power Electronics
EE 356B (Spr) - Power Electronics
EE 153, EE 253 (Aut)
- Power Electronics
Stanford Advisees
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Doctoral Dissertation Reader (AC)
Aaron Goldin, Ariana Hofelmann, Xinyi Wen -
Doctoral Dissertation Advisor (AC)
Malachi Hornbuckle, Calvin Lin, James Skelly, Eric Stolt, Zhechi Ye -
Master's Program Advisor
Ethan Brinser, Sophia Du, Viruni Lewwandoowa Liyanage, Jeff McElfresh, Justin Qin, Reuben Rosenberg, Alexander Wessel, Boyu Zhang, akayla hackson -
Doctoral (Program)
Heather Chang, Hong En Chew, Clarissa Daniel, Geneva Ecola, Malachi Hornbuckle, Dillon Jensen, Katherine Liang, Calvin Lin, Eric Stolt, Zhechi Ye
All Publications
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Design of a High-Voltage Low-Ripple Converter With High-Frequency Dickson Multipliers
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
2024
View details for DOI 10.1109/TIE.2024.3413812
View details for Web of Science ID 001271546700001
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Class-φ2 Power Amplifier With Resonant Gate Driver: High-Efficiency Power Amplifier for 50 MHz
IEEE MICROWAVE MAGAZINE
2024; 25 (6): 88-92
View details for DOI 10.1109/MMM.2024.3379028
View details for Web of Science ID 001217098300010
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A Spurious-Free Piezoelectric Resonator Based 3.2 kW DC-DC Converter for EV On-Board Chargers
IEEE TRANSACTIONS ON POWER ELECTRONICS
2024; 39 (2): 2478-2488
View details for DOI 10.1109/TPEL.2023.3334211
View details for Web of Science ID 001132675500077
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Frequency-tuning Matching Network for Load-varying Applications
IEEE. 2024: 1604-1607
View details for DOI 10.1109/APEC48139.2024.10509046
View details for Web of Science ID 001227525001112
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A Stacked Piezoelectric Converter Using a Segmented IDT Lithium Niobate Resonator
IEEE OPEN JOURNAL OF POWER ELECTRONICS
2024; 5: 286-294
View details for DOI 10.1109/OJPEL.2024.3365029
View details for Web of Science ID 001179543000001
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Nonlinear Losses and Material Limits of Piezoelectric Resonators for DC-DC Converters
IEEE. 2024: 1560-1565
View details for DOI 10.1109/APEC48139.2024.10509514
View details for Web of Science ID 001227525001106
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1 kW 6.78 MHz Push-Pull Φ<sub>2</sub> Amplifier for Induction Heating
IEEE. 2024: 595-599
View details for DOI 10.1109/APEC48139.2024.10509059
View details for Web of Science ID 001227525000093
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Comparison of GaN and Si Devices in a 50 MHz Class Φ<sub>2</sub> Converter
IEEE. 2024: 1790-1793
View details for DOI 10.1109/APEC48139.2024.10509319
View details for Web of Science ID 001227525001141
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Near Spurious-Free Thickness Shear Mode Lithium Niobate Resonator for Piezoelectric Power Conversion.
IEEE transactions on ultrasonics, ferroelectrics, and frequency control
2023; PP
Abstract
Piezoelectric power converters, where acoustic resonators replace the inductors as energy storage elements, promise much higher power density and higher efficiency compared to conventional circuits. Recently, lithium niobate (LiNbO3) piezoelectric resonators have been integrated within power converter circuits, showing good conversion efficiency, thanks to their high quality factor (Q) and electromechanical coupling (kt2). However, the converter output power range is limited by large spurious modes near resonance. This work reports a near-spurious-free LiNbO3 thickness shear (TS) resonator, demonstrating high Q of 3500 and kt2 of 45% at 5.94 MHz, with a fractional suppressed region of 35%. First, we identify the best LiNbO3 crystal orientation for efficient TS resonators. Then, we propose a novel acoustic design without busbars for spurious suppression, which is extensively simulated, fabricated, and characterized. Further analysis is done to identify existing spurious modes in our proposed design, specifically the effect of dicing on our TS resonator design. Upon optimization, LiNbO3 TS resonators could potentially empower a new design space for low-loss and compact power converters.
View details for DOI 10.1109/TUFFC.2023.3303123
View details for PubMedID 37549088
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A Novel High-Efficiency Three-Phase Multilevel PV Inverter With Reduced DC-Link Capacitance
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
2023; 70 (5): 4751-4761
View details for DOI 10.1109/TIE.2022.3187581
View details for Web of Science ID 000917915200043
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A Low-Ripple High-Frequency High-Voltage Power Supply for Ion Pumps
IEEE. 2023: 2074-2079
View details for DOI 10.1109/APEC43580.2023.10131645
View details for Web of Science ID 001012113602031
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Wideband PPT Class Phi(2) Inverter Using Phase-Switched Impedance Modulation and Reactance Compensation
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
2022; 69 (6): 5724-5734
View details for DOI 10.1109/TIE.2021.3090710
View details for Web of Science ID 000752059600036
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Real-time Selective Harmonic Minimization Using a Hybrid Analog/Digital Computing Method
IEEE TRANSACTIONS ON POWER ELECTRONICS
2022; 37 (5): 5078-5088
View details for DOI 10.1109/TPEL.2021.3126678
View details for Web of Science ID 000745538400024
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A Simple Method to Combine the Output Power From Multiple Class-E Power Amplifiers
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
2022; 10 (2): 2245-2253
View details for DOI 10.1109/JESTPE.2020.3011658
View details for Web of Science ID 000777346600080
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Class DE Switch-Mode Power Amplifier Using GaN Power HEMTs
IEEE MICROWAVE MAGAZINE
2022; 23 (3): 72-79
View details for DOI 10.1109/MMM.2021.3132111
View details for Web of Science ID 000750318400010
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Frequency-Selective MHz Power Amplifier for Dielectric Barrier Discharge Plasma Generation
IEEE OPEN JOURNAL OF POWER ELECTRONICS
2022; 3: 846-855
View details for DOI 10.1109/OJPEL.2022.3220533
View details for Web of Science ID 000886623400003
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Near-Spurious-Free Lithium Niobate Resonator for Piezoelectric Power Conversion with Q of 3500 and k(t)(2) of 45%
IEEE. 2022
View details for DOI 10.1109/IUS54386.2022.9958319
View details for Web of Science ID 000896080400378
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Forward-Zero Cycle Closed-Loop Control of Piezoelectric Resonator DC-DC Converters
IEEE. 2022
View details for DOI 10.1109/COMPEL53829.2022.9829965
View details for Web of Science ID 000860291900018
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1 kW MHz Wideband Class E Power Amplifier
IEEE OPEN JOURNAL OF POWER ELECTRONICS
2022; 3: 84-92
View details for DOI 10.1109/OJPEL.2022.3146835
View details for Web of Science ID 000761216300001
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Plasma-fixated nitrogen as fertilizer for turf grass
RSC ADVANCES
2021; 11 (60): 37886-37895
View details for DOI 10.1039/d1ra07074f
View details for Web of Science ID 000721892900001
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Plasma-fixated nitrogen as fertilizer for turf grass.
RSC advances
2021; 11 (60): 37886-37895
Abstract
We investigated the use of plasma-fixated nitrogen, which produces nitrates (NO3 -) in water, as a possible nitrogen fertilizer for recreational turf such as rye grass and bent grass. Experiments were carried out to study the effects of nitrate concentration on growth, the further effects of adding phosphorous (P) and potassium (K) to the plasma nitrated solution to make an N-P-K complete fertilizer, and to compare the efficacy of plasma-fixated nitrogen to sodium nitrate (NaNO3) and potassium nitrate (KNO3). The results indicate that the growth and biomass of the plants were strongly dependent on the concentration of the plasma-fixated nitrogen. Adding P-K to the plasma-fixated nitrogen improved grass growth. Grass that was supplied plasma-fixated nitrogen had improved growth compared to those supplied with equal amounts of NaNO3 and KNO3. This work highlights the potential use of plasma-fixated nitrogen as a fertilizer source for commonly used turf grass.
View details for DOI 10.1039/d1ra07074f
View details for PubMedID 35498073
View details for PubMedCentralID PMC9043919
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Origins of Soft-Switching C-oss Losses in SiC Power MOSFETs and Diodes for Resonant Converter Applications
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
2021; 9 (4): 4082-4095
View details for DOI 10.1109/JESTPE.2020.3034345
View details for Web of Science ID 000679548500026
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Decentralized Carrier Phase Shifting for Optimal Harmonic Minimization in Asymmetric Parallel-Connected Inverters
IEEE TRANSACTIONS ON POWER ELECTRONICS
2021; 36 (5): 5915–25
View details for DOI 10.1109/TPEL.2020.3030009
View details for Web of Science ID 000613453900088
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Small- and Large-Signal Dynamic Output Capacitance and Energy Loss in GaN-on-Si Power HEMTs
IEEE TRANSACTIONS ON ELECTRON DEVICES
2021; 68 (4): 1819–26
View details for DOI 10.1109/TED.2021.3063062
View details for Web of Science ID 000633331000065
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6.78-MHz Wireless Power Transfer With Self-Resonant Coils at 95% DC-DC Efficiency
IEEE TRANSACTIONS ON POWER ELECTRONICS
2021; 36 (3): 2456–60
View details for DOI 10.1109/TPEL.2020.3014042
View details for Web of Science ID 000583807100002
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A High Frequency Resonant Gate Driver for SiC MOSFETs
IEEE. 2021
View details for DOI 10.1109/COMPEL52922.2021.9645982
View details for Web of Science ID 000803067800038
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Wideband Class Phi(2) Power Amplifier for HF Applications
IEEE. 2021: 725-728
View details for DOI 10.1109/IMS19712.2021.9574850
View details for Web of Science ID 000852934400193
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Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance
IEEE OPEN JOURNAL OF POWER ELECTRONICS
2021; 2: 582-590
View details for DOI 10.1109/OJPEL.2021.3128509
View details for Web of Science ID 000725789000001
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Piezoelectric Resonator Second Harmonic Cancellation in Class Phi(2) Inverters
IEEE. 2021
View details for DOI 10.1109/COMPEL52922.2021.9646078
View details for Web of Science ID 000803067800107
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1 kW MHz Wideband Class E Power Amplifier
IEEE. 2021
View details for DOI 10.1109/COMPEL52922.2021.9645990
View details for Web of Science ID 000803067800045
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Class E Power Amplifier with Piezoelectric Resonator Output Branch
IEEE. 2021
View details for DOI 10.1109/COMPEL52922.2021.9645966
View details for Web of Science ID 000803067800028
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Reverse Recovery Testing of Small-Signal Schottky Diodes
IEEE. 2021: 5611-5615
View details for DOI 10.1109/ECCE47101.2021.9595177
View details for Web of Science ID 000805434405125
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Real-time Selective Harmonic Minimization using Hybrid Analog/Digital Computing
IEEE. 2021: 1041-1046
View details for DOI 10.1109/APEC42165.2021.9487342
View details for Web of Science ID 000689551700160
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1.7 kW 6.78 MHz Wireless Power Transfer with Air-Core Coils at 95.7% DC-DC Efficiency
IEEE. 2021
View details for DOI 10.1109/WPTC51349.2021.9458037
View details for Web of Science ID 000693412400023
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Time and voltage domain load models for appliance-level grid edge simulation and control
ELECTRIC POWER SYSTEMS RESEARCH
2021; 190
View details for DOI 10.1016/j.epsr.2020.106750
View details for Web of Science ID 000594663300015
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Push-Pull Class Phi(2) RF Power Amplifier
IEEE TRANSACTIONS ON POWER ELECTRONICS
2020; 35 (10): 10515–31
View details for DOI 10.1109/TPEL.2020.2981312
View details for Web of Science ID 000545474200049
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Effect of Class 2 Ceramic Capacitor Variations on Switched-Capacitor and Resonant Switched-Capacitor Converters
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
2020; 8 (3): 2268–75
View details for DOI 10.1109/JESTPE.2019.2951807
View details for Web of Science ID 000554968300024
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A Method to Eliminate Discrete Inductors in a Class-E Inverter Used in Wireless Power Transfer Applications
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
2020; 8 (3): 2167–78
View details for DOI 10.1109/JESTPE.2019.2949234
View details for Web of Science ID 000554968300016
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High-Frequency Bidirectional Resonant Converter for High Conversion Ratio and Variable Load Operation
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2020: 1983–93
View details for DOI 10.1109/JESTPE.2019.2935732
View details for Web of Science ID 000554968300003
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Design and Fabrication of Three-Dimensional Printed Air-Core Transformers for High-Frequency Power Applications
IEEE TRANSACTIONS ON POWER ELECTRONICS
2020; 35 (8): 8472–89
View details for DOI 10.1109/TPEL.2020.2963976
View details for Web of Science ID 000530303600065
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Lightweight High Voltage Generator for Untethered Electroadhesive Perching of Micro Air Vehicles
IEEE ROBOTICS AND AUTOMATION LETTERS
2020; 5 (3): 4485–92
View details for DOI 10.1109/LRA.2020.3001520
View details for Web of Science ID 000542879400005
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Cascode GaN/SiC: A Wide-Bandgap Heterogenous Power Device for High-Frequency Applications
IEEE TRANSACTIONS ON POWER ELECTRONICS
2020; 35 (6): 6340–49
View details for DOI 10.1109/TPEL.2019.2954322
View details for Web of Science ID 000554997600071
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On the Optimization of a Class-E Power Amplifier With GaN HEMTs at Megahertz Operation
IEEE TRANSACTIONS ON POWER ELECTRONICS
2020; 35 (4): 4009–23
View details for DOI 10.1109/TPEL.2019.2939549
View details for Web of Science ID 000507948300056
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Single-Turn Air-Core Coils for High-Frequency Inductive Wireless Power Transfer
IEEE TRANSACTIONS ON POWER ELECTRONICS
2020; 35 (3): 2917–32
View details for DOI 10.1109/TPEL.2019.2932178
View details for Web of Science ID 000507286000059
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A Hybrid Cockcroft-Walton/Dickson Multiplier for High Voltage Generation
IEEE TRANSACTIONS ON POWER ELECTRONICS
2020; 35 (3): 2714–23
View details for DOI 10.1109/TPEL.2019.2929167
View details for Web of Science ID 000507286000043
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A Multiresonant Gate Driver for High-Frequency Resonant Converters
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
2020; 67 (2): 1405–14
View details for DOI 10.1109/TIE.2019.2899557
View details for Web of Science ID 000490873600053
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Demonstration of GaN Impact Ionization Avalanche Transit-Time (IMPATT) Diode
IEEE. 2020
View details for Web of Science ID 000615719100031
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Low-Ripple High-Voltage DC Generation Using a Serially Segmented Multiphase Voltage Multiplier
IEEE. 2020: 962-968
View details for Web of Science ID 000645593601051
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The Impact of Multi-MHz Switching Frequencies on Dynamic On-Resistance in GaN-on-Si HEMTs
IEEE OPEN JOURNAL OF POWER ELECTRONICS
2020; 1: 210-215
View details for DOI 10.1109/OJPEL.2020.3005879
View details for Web of Science ID 000669560800020
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Modular ON/OFF and Phase-Shifting for High-Speed Radio Frequency Power Modulation
IEEE OPEN JOURNAL OF POWER ELECTRONICS
2020; 1: 393-406
View details for DOI 10.1109/OJPEL.2020.3024030
View details for Web of Science ID 000669560800034
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1 kW, Multi-MHz Wireless Charging for Electric Transportation
IEEE. 2020: 795-801
View details for Web of Science ID 000659968200117
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Design and Optimization of 6.78 MHz Wireless Power Transfer with Self-Resonant Coils
IEEE. 2020: 379-383
View details for Web of Science ID 000659968200058
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Inductorless Soft Switching DC-DC Converter with an Optimized Piezoelectric Resonator
IEEE. 2020: 2272–78
View details for Web of Science ID 000617737902064
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A physical investigation of large-signal dynamic output capacitance and energy loss in GaN-on-Si power HEMTs at high-frequency applications
IEEE. 2020: 189-194
View details for Web of Science ID 000645593600029
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On the Techniques to Utilize SiC Power Devices in High- and Very High-Frequency Power Converters
IEEE TRANSACTIONS ON POWER ELECTRONICS
2019; 34 (12): 12181–92
View details for DOI 10.1109/TPEL.2019.2904591
View details for Web of Science ID 000485747300053
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Output Capacitance Loss Characterization of Silicon Carbide Schottky Diodes
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
2019; 7 (2): 865–78
View details for DOI 10.1109/JESTPE.2019.2904290
View details for Web of Science ID 000466921500021
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Implementing an Impedance Compression Network to Compensate for Misalignments in a Wireless Power Transfer System
IEEE TRANSACTIONS ON POWER ELECTRONICS
2019; 34 (5): 4173–84
View details for DOI 10.1109/TPEL.2018.2862414
View details for Web of Science ID 000464911900019
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Cascode GaN/SiC Power Device for MHz Switching
IEEE. 2019: 2780–85
View details for Web of Science ID 000475931102148
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Miniature High-Voltage DC-DC Power Converters for Space and Micro-Robotic Applications
IEEE. 2019: 2007–14
View details for Web of Science ID 000520543702061
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Gate Drive for Very Fast Resonant Conversion using SiC Switch
IEEE. 2019: 6647–54
View details for Web of Science ID 000520543707006
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An Investigation into the Causes of C-OSS Losses in GaN-on-Si HEMTs
IEEE. 2019
View details for Web of Science ID 000493056900055
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3-D Printed Air-Core Toroidal Transformer for High-Frequency Power Conversion
IEEE. 2019
View details for Web of Science ID 000493056900068
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A Compact 45 V-to-54 kV Modular DC-DC Converter
IEEE. 2019
View details for Web of Science ID 000493056900007
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On the Optimal Input Voltage of a Class-E Power Amplifier with GaN HEMTs at MHz Frequency Operation
IEEE. 2019
View details for Web of Science ID 000493056900032
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MRI Compatible DC Modulator for an Envelope Tracking Transmitter
IEEE. 2019
View details for Web of Science ID 000493056900062
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Low Loss Gate Driving''Techniques of the Cascode GaN/SiC Power Device at High Frequencies
IEEE. 2019
View details for Web of Science ID 000493056900096
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Compact Fast-Switching DC and Resonant RF Drivers for a Dual-Mode Imaging and HIFU 2D CMUT Array
IEEE. 2019: 1951–54
View details for Web of Science ID 000510220100500
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Empirical Circuit Model for Output Capacitance Losses in Silicon Carbide Power Devices
IEEE. 2019: 998–1003
View details for Web of Science ID 000475931101022
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Duty Cycle and Frequency Modulations in Class-E DC-DC Converters for a Wide Range of Input and Output Voltages
IEEE TRANSACTIONS ON POWER ELECTRONICS
2018; 33 (12): 10524–38
View details for DOI 10.1109/TPEL.2018.2809666
View details for Web of Science ID 000445355900046
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C-OSS Losses in 600 V GaN Power Semiconductors in Soft-Switched, High- and Very-High-Frequency Power Converters
IEEE TRANSACTIONS ON POWER ELECTRONICS
2018; 33 (12): 10748–63
View details for DOI 10.1109/TPEL.2018.2800533
View details for Web of Science ID 000445355900066
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A Wide-Input-Range High-Efficiency Step-Down Power Factor Correction Converter Using a Variable Frequency Multiplier Technique
IEEE TRANSACTIONS ON POWER ELECTRONICS
2018; 33 (11): 9399–9411
View details for DOI 10.1109/TPEL.2018.2796582
View details for Web of Science ID 000442337500029
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An Integrated RF Power Delivery and Plasma Micro-Thruster System for Nano-Satellites
FRONTIERS IN PHYSICS
2018; 6
View details for DOI 10.3389/fphy.2018.00115
View details for Web of Science ID 000447153600001
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Design of a Class-DE Rectifier with Shunt Inductance and Nonlinear Capacitance for High-Voltage Conversion
IEEE TRANSACTIONS ON POWER ELECTRONICS
2018; 33 (3): 2282–94
View details for DOI 10.1109/TPEL.2017.2693271
View details for Web of Science ID 000417819300037
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Designing a 40.68 MHz power-combining resonant inverter with eGaN FETs for plasma generation
IEEE. 2018: 1322–27
View details for Web of Science ID 000455187601103
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Design of a GaN-Based Wireless Power Transfer System at 13.56 MHz to Replace Conventional Wired Connection in a Vehicle
IEEE. 2018: 3848–54
View details for Web of Science ID 000449328903127
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FPGA-based Dynamic Duty Cycle and Frequency Controller for a Class-E-2 DC-DC Converter
IEEE. 2018: 282–88
View details for Web of Science ID 000449328900036
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Substrate Bias Effect on E-Mode GaN-on-Si HEMT COSS Losses
IEEE. 2018: 130–33
View details for Web of Science ID 000455147700024
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Estimating the Reliability of Series-Connected Schottky Diodes for High-Frequency Rectification
IEEE. 2018
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Considerations for Active Power Device Selection in High- and Very-High-Frequency Power Converters
IEEE. 2018
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Design of a 13.56 MHz dc-to-dc resonant converter using an impedance compression network to mitigate misalignments in a wireless power transfer system
IEEE. 2018
View details for Web of Science ID 000455139800129
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A Study on Off-State Losses in Silicon-Carbide Schottky Diodes
IEEE. 2018
View details for Web of Science ID 000455139800133
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Design of a GaN-Based, Inductor-less, Wireless Power Transfer System at 40.68 MHz
IEEE. 2018
View details for Web of Science ID 000455139800041
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High-Frequency Bidirectional Resonant Converter for High Conversion Ratio and Variable Load Operation
IEEE. 2018
View details for Web of Science ID 000455139800046
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Effect of Class 2 Ceramic Capacitance Variations on Switched Capacitor and Resonant Switched Capacitor Converters
IEEE. 2018
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60 V-to-35 kV Input-Parallel Output-Series DC-DC Converter Using Multi-Level Class-DE Rectifiers
IEEE. 2018: 2235–41
View details for Web of Science ID 000434981902062
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C-OSS Losses in Silicon Superjunction MOSFETs across Constructions and Generations
IEEE. 2018: 136–39
View details for Web of Science ID 000467075700033
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COSS Measurements for Superjunction MOSFETs: Limitations and Opportunities
IEEE Transactions on Electron Devices
2018: 1-7
View details for DOI 10.1109/TED.2018.2880952
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Active Power Device Selection in High- and Very-High-Frequency Power Converters
IEEE Transactions on Power Electronics
2018: 1
View details for DOI 10.1109/TPEL.2018.2874420
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High-Frequency Resonant Converter with Synchronous Rectification for High Conversion Ratio and Variable Load Operation
IEEE. 2018: 632–38
View details for Web of Science ID 000449328900092
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A Wide Input Range Isolated Stacked Resonant Switched-Capacitor dc-dc Converter for High Conversion Ratios
IEEE. 2018
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Vacuum Testing of a Miniaturized Switch Mode Amplifier Powering an Electrothermal Plasma Micro-Thruster
FRONTIERS IN PHYSICS
2017; 5
View details for DOI 10.3389/fphy.2017.00036
View details for Web of Science ID 000409039400001
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Low-Mass RF Power Inverter for CubeSat Applications Using 3-D Printed Inductors
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
2017; 5 (2): 880-890
View details for DOI 10.1109/JESTPE.2016.2644644
View details for Web of Science ID 000400896000026
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Universal Line Input Power Factor Preregulator Using VFX Technique
IEEE. 2017: 1810–15
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Evaluation of GaN Transistor Losses at MHz Frequencies in Soft Switching Converters
IEEE. 2017
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The "Smart Dim Fuse": A New Approach to Load Control as a Distributed Energy Resource
IEEE. 2017
View details for Web of Science ID 000426864800088
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High-frequency, High-power Resonant Inverter with eGaN FET for Wireless Power Transfer
IEEE Transactions on Power Electronics
2017
View details for DOI 10.1109/TPEL.2017.2740293
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Structurally supportive RF power inverter for a CubeSat electrothermal plasma micro-thruster with PCB inductors
IEEE. 2017: 2141-2145
View details for Web of Science ID 000403242802041
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A Portable Electrostatic Precipitator to Reduce Respiratory Death in Rural Environments
IEEE. 2017
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Isolated Resonant DC-DC Converters with a Loosely Coupled Transformer
IEEE. 2017
View details for Web of Science ID 000426864800017
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A compact RF power inverter with reduced EMI for a CubeSat electrothermal micro-thruster
IEEE. 2017
View details for Web of Science ID 000426864800063
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Design of Very-High-Frequency Synchronous Resonant DC-DC Converter for Variable Load Operation
IEEE. 2017: 3447–54
View details for Web of Science ID 000426847403109
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A Multi-resonant Gate Driver for Very-High-Frequency (VHF) Resonant Converters
IEEE. 2017
View details for Web of Science ID 000426864800082
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A Unified Model for High-Power, Air-Core Toroidal PCB Inductors
IEEE. 2017
View details for Web of Science ID 000426864800125
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Output Capacitance Losses in 600 V GaN Power Semiconductors with Large Voltage Swings at High- and Very-High-Frequencies
IEEE. 2017: 352–59
View details for Web of Science ID 000426933900060
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Implementing an impedance compression network to correct misalignment in a wireless power transfer system
IEEE. 2017
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Power Loss of GaN Transistor Reverse Diodes in a High Frequency High Voltage Resonant Rectifier
IEEE. 2017: 1942–45
View details for Web of Science ID 000403242802009
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3-D-Printed Air-Core Inductors for High-Frequency Power Converters
IEEE TRANSACTIONS ON POWER ELECTRONICS
2016; 31 (1): 52-64
View details for DOI 10.1109/TPEL.2015.2441005
View details for Web of Science ID 000361908600008
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Low mass RF power inverter for cubesat plasma thruster using 3D printed inductors
IEEE. 2016
View details for Web of Science ID 000389467400093
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Resonant Bi-Polar DC Pulse Power Supply for Electroporation Applications
IEEE. 2016
View details for DOI 10.1109/COMPEL.2016.7556758
View details for Web of Science ID 000389467400103
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A Design Methodology for Class-D Resonant Rectifier with Parallel LC Tank
IEEE. 2016
View details for Web of Science ID 000389467400096
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Evaluation of a 900 V SiC MOSFET in a 13.56 MHz 2 kW resonant inverter for wireless power transfer
IEEE. 2016
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Comparison of SiC and eGaN devices in a 6.78 MHz 2.2 kW resonant inverter for wireless power transfer
IEEE. 2016
View details for Web of Science ID 000400778402013
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13.56 MHz High Density DC-DC Converter With PCB Inductors
IEEE TRANSACTIONS ON POWER ELECTRONICS
2015; 30 (8): 4291-4301
View details for DOI 10.1109/TPEL.2014.2357398
View details for Web of Science ID 000353128500025
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27.12MHz GaN Resonant Power Converter with PCB Embedded Resonant Air Core Inductors and Capacitors
IEEE. 2015: 4251–56
View details for Web of Science ID 000378882904083
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27.12 MHz Isolated High Voltage Gain Multi-Level Resonant DC-DC Converter
IEEE. 2015: 5074-5080
View details for Web of Science ID 000378882905057
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13.56 MHz 1.3 kW Resonant Converter with GaN FET for Wireless Power Transfer
IEEE. 2015
View details for Web of Science ID 000380542500072
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27.12MHz GaN Bi-directional Resonant Power Converter
IEEE. 2015
View details for Web of Science ID 000380547800005
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Performance evaluation of diodes in 27.12 MHz Class-D resonant rectifiers under high voltage and high slew rate conditions
IEEE 15th Workshop on Control and Modeling for Power Electronics (COMPEL)
IEEE. 2014
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3D Printed Air Core Inductors for High Frequency Power Converters
IEEE. 2014: 971–79
View details for Web of Science ID 000411444300137
- A 13.56 MHz High Density dc-dc Converter with PCB Inductors 2013
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13.56 MHz High Density dc-dc Converter with PCB Inductors
IEEE. 2013: 633–40
View details for Web of Science ID 000324988600100
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27.12 MHz Large Voltage Gain Resonant Converter with Low Voltage Stress
IEEE. 2013: 1820–27
View details for Web of Science ID 000345216902017
- 27.12 MHz large voltage gain resonant converter with low voltage stress 2013
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High-Frequency Resonant SEPIC Converter With Wide Input and Output Voltage Ranges
IEEE TRANSACTIONS ON POWER ELECTRONICS
2012; 27 (1): 189-200
View details for DOI 10.1109/TPEL.2011.2149543
View details for Web of Science ID 000298048700005
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A Very High Frequency DC-DC Converter Based on a Class Phi(2) Resonant Inverter
IEEE TRANSACTIONS ON POWER ELECTRONICS
2011; 26 (10): 2980-2992
View details for DOI 10.1109/TPEL.2011.2108669
View details for Web of Science ID 000296982100025
- A Very High Frequency dc-dc Converter Based on a Class 2 Resonant Inverter IEEE Transactions on Power Electronics 2011; 26 (10): 2980-2992
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A 500 W Push-pull Dc-dc Power Converter with a 30 MHz Switching Frequency
IEEE. 2010: 654-661
View details for DOI 10.1109/APEC.2010.5433602
View details for Web of Science ID 000278142300103
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Very-High-Frequency Resonant Boost Converters
IEEE TRANSACTIONS ON POWER ELECTRONICS
2009; 24 (5-6): 1654-1665
View details for DOI 10.1109/TPEL.2009.2016098
View details for Web of Science ID 000267036200053
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A high-bandwidth high-power inverter
IEEE. 2009: 5415-5423
View details for Web of Science ID 000275384102132
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A high-frequency resonant inverter topology with low-voltage stress
IEEE TRANSACTIONS ON POWER ELECTRONICS
2008; 23 (4): 1759-1771
View details for DOI 10.1109/TPEL.2008.924616
View details for Web of Science ID 000258118000017
- A High-Frequency Resonant Inverter Topology With Low-Voltage Stress IEEE Transactions on Power Electronics 2008; 23 (4): 1759-1771
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High Frequency Resonant SEPIC Converter with Wide Input and Output Voltage Ranges
IEEE. 2008: 1397-+
View details for DOI 10.1109/PESC.2008.4592131
View details for Web of Science ID 000260398500223
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A Very High Frequency dc-dc Converter Based on a Class Phi(2) Resonant Inverter
IEEE. 2008: 1657-1666
View details for DOI 10.1109/PESC.2008.4592179
View details for Web of Science ID 000260398501033
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A high-frequency resonant inverter topology with low voltage stress
IEEE, ELECTRON DEVICES SOC & RELIABILITY GROUP. 2007: 2705-2717
View details for DOI 10.1109/PESC.2007.4342446
View details for Web of Science ID 000252375205014
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Resistance compression networks for radio-frequency power conversion
IEEE TRANSACTIONS ON POWER ELECTRONICS
2007; 22 (1): 41-53
View details for DOI 10.1109/TPEL.2006.886601
View details for Web of Science ID 000244302700005
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Very high frequency resonant boost converters
IEEE, ELECTRON DEVICES SOC & RELIABILITY GROUP. 2007: 2718-2724
View details for DOI 10.1109/PESC.2007.4342447
View details for Web of Science ID 000252375205015
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New architectures for radio-frequency DC-DC power conversion
IEEE TRANSACTIONS ON POWER ELECTRONICS
2006; 21 (2): 380-393
View details for DOI 10.1109/TPEL.2005.869740
View details for Web of Science ID 000236288200011
- Design Considerations for Very High Frequency dc-dc Converters 2006
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Design considerations for very high frequency dc-dc converters
IEEE. 2006: 741-751
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- New Architectures for Radio-Frequency dc-dc Power Conversion IEEE Transactions on Power Electronics 2006; 21 (2): 380-393
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Resistance compression networks for resonant power conversion
IEEE. 2005: 1282-1292
View details for DOI 10.1109/PESC.2005.1581795
View details for Web of Science ID 000237036501048
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Performance improvement of alternators with switched-mode rectifiers
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2004: 561-568
View details for DOI 10.1109/TEC.2004.832072
View details for Web of Science ID 000223498000013
- Performance improvement of alternators with Switched-Mode Rectifers IEEE Transactions on Energy Conversion. 2004; 19 (3): 561-568
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New architectures for radio-frequency dc/dc power conversion
IEEE. 2004: 4074-4084
View details for DOI 10.1109/PESC.2004.1355197
View details for Web of Science ID 000224587600672
- New Architectures for Radio-Frequency dc-dc Power Conversion 2004
- Performance improvement of alternators with switched-mode rectifiers 2003
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Performance improvement of alternators with switched-mode rectifiers
IEEE. 2003: 1984-1991
View details for Web of Science ID 000184497900311
- A Very High Frequency dc-dc Converter Based on a Class 2 Resonant Inverter
- A high-frequency resonant inverter topology with low voltage stress