Switching power supply circuit

Details Switching power supply circuit Switching power supply circuit

2006-09-19

2006-09-19

Riley, Shawn (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

Reexamination Certificate

active

07110268

ABSTRACT:
The present invention provides a power supply circuit performing constant voltage control by switching frequency control and achieving minimization of a necessary control range of the switching frequency control and implementation of a configuration ready for a wide range. A switching power supply circuit includes a switching circuit, a switching driving unit, an insulating converter transformer, a primary side series resonance circuit, a secondary side series resonance circuit, a secondary side DC output voltage production unit, a constant voltage control circuit, and a composite coupling coefficient setting mechanism.

REFERENCES:
patent: 6483721 (2002-11-01), Terashi
patent: 6654259 (2003-11-01), Koshita et al.
patent: 2003-235259 (2003-08-01), None

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