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Straightforward power processing is one of the many application fields of the recently discovered linear variable inductor, the LVI. A brief description of the operation principle and of the construction of an LVI is followed by a presentation of the simplest power processing cell utilizing this new component. The new cell operates in the continuous conduction mode only and features a number of desirable...
In the past few years there has been a need to improve the density of power conversion systems. This need is met by increasing the operating frequency of power converters from hundreds of kilohertz to tens of megahertz. The development of higher frequency power converters has been limited by the control integrated circuits, magnetics, capacitors , and an anticipated lower conversion efficiency.
The SPICE PLUS simulation program offers circuit designers full capability for simulating magnetic cores used in power supplies and in other power design circuits. This paper is an overview of the model, its capabilities, and application. The magnetic model defines both major and minor hysteresis loops, which are derived from the dynamic relationship between magnetic flux density and magnetic field...
Magnetic amplifiers post regulators are often used in multiple output power supplies to achieve independent regulation of the additional outputs. This paper describes a method of constructing saturable reactor regulators which eliminates the square loop requirements and allows the use of magnetically soft materials. The resulting structure is tolerant of small gaps which allows construction using...
In view of the increased use of higher frequencies for switching power supply, a new amorphous saturable core for a high frequency magnetic amplifier has been developed. Its core loss is about one half of that for a conventional amorphous saturable core, and one third of that for an 80 Ni permalloy core with a high rectangular ratio. The newly developed amorphous saturable core has been actually operated...
New two-bobbin design alternatives to the integration of transformer and inductive functions on single core structures are presented for conventional switchmode power converter circuits, including discussions of the practical design methods followed in the integration processes. Illustrations of application of these methods include buck and boost-derived circuits with integrated magnetics, and how...
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