Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2007-02-06
2007-02-06
Vu, Bao Q. (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S021040, C363S021060, C363S131000
Reexamination Certificate
active
11233542
ABSTRACT:
In one embodiment, an apparatus includes a transformer having a primary winding and a secondary winding and a switching circuit to facilitate a periodic application of an input voltage to the primary winding. The switching circuit includes an active switch and a capacitor commonly coupled to the primary winding. In one embodiment, the apparatus further includes a synchronous rectification circuit coupled to the secondary winding to generate a rectified signal, an output filter coupled to the synchronous rectification circuit to provide an output voltage in response to the rectified signal, and a control circuit coupled to the output filter to receive the output voltage and coupled in a switching control relationship with the active switch and the synchronous rectification circuit.
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“SC4901 COMBI-SYNC Secondary Side Synchronous Rectifier and Regulator,” Semtech Corporation, Power Management Products Division, www.semtech.com, Revision Jan. 2004, pp. 1-18.
Schwabe Williamson & Wyatt P.C.
Vu Bao Q.
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