Publications
Publications
“The Invisible Circuit: Non-Idealities in Circuit Elements and System Components”, APEC 16 Seminar Manual
In this seminar we discuss the material characteristics, behavioral characteristics, and electronic sub-elements that are part of circuit elements and system components that cause the elements or components to perform differently than an ideal, pure, or perfect element or component would be expected to perform.
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“Optimal Switch Timing, Parts 1 and 2” January and February 2016 Issues of How2Power.com online magazine
These articles describe the issues and solutions related to achieving optimal switch timing for reducing conduction and switching losses in soft switching power converters.
“Leakage Inductance: Friend or Foe, Parts 1, 2, and 3” October, November, and December 2015 issues of How2Power.com online magazine
These articles help the reader to better understand what leakage inductance is, what the problems caused by leakage inductance are and how to avoid them, and how leakage inductance can be used to great benefit.
http://www.how2power.com/pdf_view.php?url=/newsletters/1510/articles/H2PToday1510_design_TechnicalWitts.pdf
“From Control to Gate: Gate Drive Circuits and Techniques”, APEC 13 Seminar Manual
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In this seminar we discuss gate interface issues, gate drive circuits for isolated, non-isolated, and high side gate drive circuits, advanced gate drive circuits for optimal timing of soft switching converters, powering gate drivers, and the unique problems of gate drives for synchronous rectifiers and both enhancement mode and depletion mode wide bandgap semiconductors.
“Soft Switching Circuits and Techniques”, APEC 11 Seminar Manual
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Operational principles of circuits used to reduce and eliminate switching losses are revealed with detailed descriptions of the most compelling soft switching circuits.
“Solid State Lighting for Residential Applications”, APEC 10
“Practical Soft Switching Power Converters”, APEC 08 Seminar Manual
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“High Efficiency Power Supply Design” Professional Advancement Course Manual, Power Systems World, October 2006, Long Beach, CA
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Topology selection and design decisions that effect efficiency are discussed as well as the loss mechanisms that contribute to inefficiency.
“Topology Selection by the Numbers, Parts 1, 2, and 3”, Power Electronics Technology Magazine, March 2006 through May 2006.
https://www.researchgate.net/publication/294144788_Topology_selection_by_the_numbers_-_Part_one
ieeexplore.ieee.org/document/7038001
https://ieeexplore.ieee.org/document/8507937
“High Efficiency Power Supply Design”, APEC 06 Seminar Manual.
https://powelinno.com/products-2/
“Power Conversion Synthesis, Parts 1 through 4: Near Zero Emissions”, Power Electronics Technology, March 2003 through June 2003
“EMC Enhanced Power Supply Design”, APEC 2003 Seminar Manual, February 2003, Power Systems World 2003, and APEC 2005 and 2010 Seminar Manuals.
https://powelinno.com/products-2/
“Zero Voltage Switching Converter”, Design Idea, Electronic Design Magazine, April 1997
“New Simple Resonant Transition Topologies for High Frequency Multi-Phase Parallel PWM Converters”, Proceedings of High Frequency Power Conversion Conference, May 1993
New simple soft switching circuit topologies that lend themselves to multi-phase parallel operation are revealed.
“A Simple Clamped ZVS PWM Converter”, Proceedings of IEEE APEC, March 1993
https://ieeexplore.ieee.org/document/290749
Practical soft switching flyback and flybuck power converters are revealed.
“Improved Multi-Phase Coupled Inductor Topologies”, “Negative Output Impedance Converters for Improved Load Regulation”, and “Active Inrush Current and Current Slope Limiting”, Proceedings of High Frequency Power Conversion Conference, May 1992
Negative output impedance converters that generate increased output voltage with increasing load to compensate for resistance losses in post filters and down stream cables are revealed. A new inrush current limiting circuit that requires no current sensing resistor is revealed.
“A Duty Cycle Extension Technique For Single-Ended Forward Converters”, Proceedings of IEEE Applied Power Electronics Conference, February 1992
https://ieeexplore.ieee.org/document/228431
The use of a non-dissipative LCD clamp is used to achieve duty cycles well above 50% in single ended forward converters to reduce conduction losses is revealed.
“An Active Resonant Snubber for High Frequency PWM Converters”, Proceedings of IEEE Power Electronics Specialists Conference, June 1990