Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2006-11-29
2010-06-08
Patel, Rajnikant B (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S097000, C323S285000
Reexamination Certificate
active
07733672
ABSTRACT:
A control system that controls a switching circuit having a switching element and an inductive element coupled to an output of the switching element. The control system includes a switching control circuit that controls the switching element to operate the switching circuit in a first conduction mode of operation, such as a boundary conduction mode (BCM), in which current in the inductive element is maintained at a non-zero level during a first time period within each switching cycle. A conduction mode control circuit is configured for switching the switching circuit into a second conduction mode of operation, such as a discontinuous conduction mode (DCM), in which current in the inductive element is maintained at a non-zero level during a second time period within each switching cycle. The first time period differs from the second time period.
REFERENCES:
patent: 6728117 (2004-04-01), Schemmann et al.
patent: 7045992 (2006-05-01), Silva et al.
patent: 7132765 (2006-11-01), Premont et al.
patent: 7288924 (2007-10-01), Trandafir et al.
Linear Technology Corporation
McDermott Will & Emery LLP
Patel Rajnikant B
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