Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1993-08-25
1995-09-05
Sterrett, Jeffrey L.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 16, 363 21, H02M 3335
Patent
active
054484650
ABSTRACT:
A switching power supply supplies a regulated output voltage and suppresses spike voltage and spike current generated by a switching action of transformers, and suppresses switching frequency drift due to load variation. Output stability of multi-output design is improved and recovery of rectifying diodes by a current resonance are suppressed. A reduction of noise interference to electronic equipments and power loss in the switching power supply itself results. A series connection of a primary winding of a first transformer and a first switching means, which repeats an on/off action is connected across a d-c power source. A series connection of a second switching means, which repeats an on/off action alternately with the first switching means, and a first capacitor is connected in parallel with the primary winding of the first transformer. A series connection of a primary winding of the second transformer and a second capacitor is connected in parallel with the second switching means. Regulated d-c outputs are taken out from each secondary winding of the transformers through rectifiers/filters. A control circuit supplies on/off signals, which on/off-ratios are varied according to one of the regulated d-c outputs, to the first and the second switching means.
REFERENCES:
patent: 4353112 (1982-10-01), Rietveld et al.
patent: 4959764 (1990-09-01), Bassett
patent: 5057986 (1991-10-01), Henze et al.
patent: 5111372 (1992-05-01), Kameyama et al.
patent: 5126931 (1992-06-01), Jitaru
patent: 5146394 (1992-09-01), Ishii et al.
patent: 5173846 (1992-12-01), Smith
patent: 5267133 (1993-11-01), Motomura et al.
patent: 5383106 (1995-01-01), Yoshida et al.
K. Yoshida, T. Ishii, N. Nagagata, "Zero Voltage Switching Approach For Flyback Converter", IEEE INTELEC, No. 15-3, pp. 324-329, (Oct. 1992).
Ishii Takuya
Nagagata Nobuyoshi
Yoshida Koji
Matsushita Electric - Industrial Co., Ltd.
Sterrett Jeffrey L.
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