Proceedings ArticleDOI
Issues related to 1–10 MHz transformer design
A.F. Goldberg,John G. Kassakian,Martin F. Schlecht +2 more
- pp 379-386
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TLDR
In this article, an analysis of skin and proximity effects in the conductors and measurements of permeability and hysteresis loss in the magnetic material are combined in a computer assisted study of the relationships between size, efficiency, and frequency.Citations
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Proceedings ArticleDOI
New architectures for radio-frequency DC/DC power conversion
TL;DR: In this paper, the authors proposed new architectures for switched-mode DC/DC power conversion, which enable dramatic increases in switching frequency to be realized while preserving features critical in practice, including regulation of the output across a wide load range and high light-load efficiency.
Journal ArticleDOI
AC resistance of planar power inductors and the quasidistributed gap technique
Jiankun Hu,Charles R. Sullivan +1 more
TL;DR: In this paper, a model for low-AC-resistance planar or foil-wound inductors constructed using a quasidistributed gap comprising multiple small gaps that approximate a distributed gap is presented.
Journal ArticleDOI
New Architectures for Radio-Frequency DC–DC Power Conversion
TL;DR: In this article, the authors proposed two new architectures for switched-mode dc-dc power conversion, which enable dramatic increases in switching frequency to be realized while preserving features critical in practice, including regulation of the output across a wide load range and high light-load efficiency.
Journal ArticleDOI
High-Density Nanocrystalline Core Transformer for High-Power High-Frequency Resonant Converter
TL;DR: In this article, a high-density transformer using nanocrystalline core for a 30 kW, 200 kHz resonant converter is developed, and the important parasitic models are also developed considering litz wire effects.
Journal ArticleDOI
Determination of the Magnetic Permeability, Electrical Conductivity, and Thickness of Ferrite Metallic Plates Using a Multifrequency Electromagnetic Sensing System
TL;DR: An inverse method was developed which can, in principle, reconstruct arbitrary permeability, conductivity, thickness, and lift-off with a multifrequency electromagnetic sensor from inductance spectroscopic measurements and shows for the first time that the inductanceSpectra can be inverted in practice to determine the key values with a relative error of less than 5% during the thermal processing of metallic plates.
References
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Proceedings ArticleDOI
Zero-voltage switching technique in DC/DC converters
Kwang-Hwa Liu,Fred C. Lee +1 more
TL;DR: In this article, a novel resonant switch operating under the principle of zerovoltage switching is presented, which eliminates the switching loss and dv/dt noise due to discharging of MOSFET's junction capacitances and the reverse recovery of diodes, and enables the converters to operate at yet higher frequencies.
Journal ArticleDOI
Dimensional Effects Resulting from a High Dielectric Constant Found in a Ferromagnetic Ferrite
Proceedings ArticleDOI
A high frequency, low volume, point-of-load power supply for distributed power systems
L.F. Casey,Martin F. Schlecht +1 more
TL;DR: In this article, a resonant version of the dc-dc forward converter is presented, which can be used for very low volume, point-of-load conversion in distributed power systems.
Proceedings ArticleDOI
The application of power MOSFETs at 10MHz
A.F. Goldberg,John G. Kassakian +1 more
TL;DR: In this paper, the design and performance of a 10MHz dc/dc converter is discussed and the behavior of the power MOSFET at this frequency, and the integration of device parasitics into the circuit are described.
Journal ArticleDOI
Magnetic properties of ion beam sputtered Co-Zr and Co-Zr-Re amorphous films
TL;DR: In this paper, the optimum deposition conditions of amorphous Co-Zr films fabricated by ion beam sputtering and their magnetic properties are investigated, and it is shown that the resistivity of the films increases monotonically with Zr content or as the substrate temperature decreases from +300 °C to -130 °C.