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Patent

Push-pull zero-ripple IM converter system

Gordon E. Bloom
TLDR
In this paper, a unique multi-output isolated buck DC-DC converter system is described, which can be adapted to two or three-bobbin integrated-magnetic embodiments, or in discrete magnetic form.
Abstract: 
A unique multi-output isolated buck DC-DC converter system is disclosed. The converter system has non-pulsating input and output current waveforms. The converter can be adapted to two- or three-bobbin integrated-magnetic embodiments, or in discrete-magnetic form. One embodiment of the converter comprises capacitor means joined at one end to a first common core inductor and joined at its opposite end to a second common core inductor; and switch means having a duty cycle, for alternately joining an output lead to one end of the capacitor means and to the opposite end of the capacitor means, such that a voltage proportional to "VD" is produced at the output lead when a DC voltage "V" is applied across opposite ends of the first and the second common core inductor.

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Citations
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Patent

High efficiency power converter

Martin F. Schlecht
TL;DR: In this article, a power converter nearly losslessly delivers energy and recovers energy from capacitors associated with controlled rectifiers in a secondary winding circuit, each controlled rectifier having a parallel uncontrolled rectifier.
Patent

Direct current converter with integrated transformer windings and output voltage filtering coils on the same magnetic core

Pentti Nieminen, +1 more
TL;DR: Chopper-type direct-current converter comprising a magnetic core (M), which comprises a first and a second side leg (MS 1, MS 2 ), the ends of which are connected to each other with pieces, and a center leg provided with an air gap and connected to the end pieces between the first and second side legs.
Patent

Ripple current reduction circuit

Joseph Marrero, +1 more
TL;DR: In this paper, an improvement is provided for a circuit having a first winding of N 1 turns connected in series with a total inductance of L across a first voltage V 1 and a second steering winding of n 2 turns connecting in series, with the second winding magnetically coupled to the first winding having an inductance L c produced by the first turning.
Patent

DC-To-DC converter with secondary flyback core reset

Ming L. Chen, +1 more
TL;DR: In this article, a secondary flyback core reset (SFCR) scheme for single-ended forward DC-to-DC converters is proposed, where the magnetic flux built up through the primary winding when the main switch was turned on is reset through this secondary fly-back reset circuit when the primary switch is turned off.
Patent

DC to DC transformer-based converter with push pull electronic switching

Philip Rodulfo
TL;DR: In this article, a converter has an assembly with a transformer having primary and secondary windings and two pairs of primary and Secondary choke windings wound around a core, each switching circuit comprises a capacitor, diode and a MOSFET.
References
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Patent

DC-to-DC switching converter with zero input and output current ripple and integrated magnetics circuits

Slobodan Cuk
TL;DR: In this article, an improved dc-to-dc converter is provided comprised of two inductances, an input inductance in series with the input source and an output inductance with the load, and between the two inductance, two storage capacitances in series, alternating switching means alternately connect the junction between the inductance and the first series capacitance to a junction common to the source and load.
Patent

DC-to-DC switching converter

Slobodan Cuk, +1 more
TL;DR: In this paper, a dc-to-dc converter with nonpulsating input and output current uses two inductances, one in series with the input source, the other inseries with the output load.
Patent

High switching frequency converter auxiliary magnetic winding and snubber circuit

George A Gautherin, +1 more
TL;DR: An integrated magnetic assembly for use in the direct current output circuit of a high frequency electronic switching power supply, comprising magnetic core sections for the output transformer and inductor windings and a common magnetic core segment completing the magnetic flux paths for the transformers and inductors, is described in this article.
Patent

Combined transformer and indicator device

John R Cielo, +1 more
TL;DR: The DC-to-DC POWE CONVERTERM as discussed by the authors is a three-legged MAGNETIC STRUCTURE with an air gap in the center-center leg.
Patent

Current-fed, forward converter switching at zero current

Patrizio Vinciarelli
TL;DR: In this paper, a single-ended zero-current switching, forward converter circuit is proposed to convert power from a current source to a voltage load in a succession of energy transfer cycles using a transformer constructed to have an effective leakage inductance L 1e, a capacitor (C) in series with the primary winding of the transformer, a switching device also in series, a unidirectional conducting device connected with the secondary winding in an orientation to conduct when the switching device is conducting, and a controller that selectively closes and opens the switch device to transfer energy from the capacitor via