Active clamp zero voltage soft switch high gain booster staggered parallel converter

A soft-switching, high-gain technology, applied in the field of active clamp zero-voltage soft-switching high-gain boost interleaved parallel converters, can solve the problem of complex external circuits, inability to achieve high-gain functions of the converter, and inability to reduce power switching transistors. Voltage stress and other problems, to achieve the effect of less additional components, improved output gain and circuit efficiency, and simple structure
CN100446390CInactive Publication Date: 2008-12-24ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2008-12-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention discloses active clamp zero-voltage soft switch high gain boost staggered parallel converters including two power switch tubes, two clamp switch tubes, two clamp capacitors, two continuing flow diodes and two coupled inductors, in which, each of the two coupled inductors includes three windings, which utilizes the second and third windings of the two coupled inductors to realize high gain output of the converter, utilizes a serial circuit composed of the two clamp switch tubes and two clamp capacitors to absorb and transfer harmlessly the leak energy of the two coupled inductors and realizes turn on of zero voltage of two power switch tubes and zero voltage turn-off of them utilizing the parallel capacitors of the two switch tubes to further realize zero-voltage turn on and off of the two clamp switch tubes.
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Description

technical field

[0001] The invention relates to a DC-DC converter. Specifically, it is an active-clamp zero-voltage soft-switching high-gain step-up interleaved parallel converter. Background technique

[0002] A conventional step-up (Boost) interleaved parallel DC-DC converter includes two inductors, two freewheeling diodes, two power switch tubes, the drain of the first power switch tube and the anode of the first diode and One end of the first inductance is connected, the drain of the second power switch tube is connected with the anode of the second diode and one end of the second inductance, and the other end of the first inductance is connected with the other end of the second inductance. The output voltage gain of this step-up interleaved parallel DC-DC converter is small, the voltage stress of the power switch tube is large, the power switch tube works as a hard switch, the switching loss is large, and the reverse recovery current of the freewheeling diode is large ...

Claims

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