Electric power conversion systems – Current conversion – Having plural converters for single conversion
Reexamination Certificate
2005-02-08
2005-02-08
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Current conversion
Having plural converters for single conversion
C363S067000, C363S071000
Reexamination Certificate
active
06853568
ABSTRACT:
The present invention proposes a new structure for a high input VRM. This structure is similar to a simple buck converter and can simplify the 48V input VRM design. In this present invention, the interleaved voltage regulator is provided. The interleaved voltage regulator includes an integrated magnetic device for performing both transformer and output choke filter function, a first switch, a second switch, a third switch, and a fourth switch, wherein the integrated magnetic device includes a transformer having a first primary winding, a second primary winding, a first secondary winding, and a second secondary winding, a first choke filter having one end coupled to a first terminal of the first secondary winding, and a second choke filter having one end coupled to a first terminal of the second secondary winding, and the other end of the second choke filter coupled to the other end of the first choke filter to form the output terminal of the isolated voltage regulator. The first switch, the second switch, the first choke filter, and the first secondary winding form a synchronous rectifier circuit. The third switch, the fourth switch, the second choke filter, and the second secondary winding form another synchronous rectifier circuit.
REFERENCES:
patent: 6191964 (2001-02-01), Boylan et al.
patent: 6351396 (2002-02-01), Jacobs
patent: 6373732 (2002-04-01), Patel et al.
patent: 6535400 (2003-03-01), Bridge
patent: 6574124 (2003-06-01), Lin et al.
patent: 6711035 (2004-03-01), Tomioka
patent: 6760235 (2004-07-01), Lin et al.
Huang Guisong
Ke Zhongwei
Li Wenhua
Zhang Alpha J.
Berhane Adolf
Delta Electronics , Inc.
Webb Ziesenheim & Logsdon Orkin & Hanson, P.C.
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