Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2008-07-22
2008-07-22
Sterrett, Jeffrey L (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S021040, C363S021120
Reexamination Certificate
active
07403402
ABSTRACT:
A technique for extending the operating range of a flyforward converter to low input voltages. In one aspect, power converter includes a positive input supply rail and a negative input supply rail. A power converter input voltage is to be applied between the positive and negative input supply rails. A flyback energy transfer element having a flyback input winding and a forward energy transfer element having a forward input winding are also included. The flyback and forward input windings are coupled between the positive and negative input supply rails. Voltage control circuitry coupled to the forward energy transfer element is also included to reduce a voltage across the forward input winding, substantially to zero, when the power converter input voltage falls below a first threshold value.
REFERENCES:
patent: 3602801 (1971-08-01), Williamson
patent: 4866495 (1989-09-01), Kinzer
patent: 5684680 (1997-11-01), Tahhan et al.
patent: 5831838 (1998-11-01), Illingworth
patent: 5844787 (1998-12-01), Fraidlin et al.
patent: 2003/0103362 (2003-06-01), Gan et al.
patent: 3136024 (1983-03-01), None
patent: 05253196 (2005-07-01), None
Park, J. N. et al., “A Dual Mode Forward/Flyback Converter,”IEEE, 1982, pp. 3-13.
Taylor, B. E., “The Single Hexfet® Fly-Forward Converter—A Novel Topology for Intrinsically Simple Switching Supplies,” PCI, Jun. 1986, pp. 9-17.
Chen, W. et al., “Comparisons Between Fly-Forward Converter and Flyback and Forward Converters,”Journal of Nanjing University of Aeronautics and Astronautics, vol. 29, No. 4, Aug. 1997.
Chen, W. et al., “Theoretical Analysis and Experimental Verification of Fly-Forward Converter with LCD Magnetic Resetting,”Journal of Nanjing University of Aeronautics and Astronautics, vol. 29, No. 3, Jun. 1997.
Sebastian, J. et al., “A Complete Study of the Double Forward-Flyback Converter,”IEEE, 1988, pp. 142-149.
“Switching Technologies,” Sierracin/Power Systems, Chatsworth, CA.
Park, J. N. et al., “A Dual Mode Forward/Flyback Converter,”IEEE, 1982, pp. 3-13.
Taylor, B. E., “The single Hexfet® Fly-Forward Converter - A Novel Topology for Intrinsically Simple Switching Supplies,” PCI, Jun 1986, pp. 9-17.
Chen, W. et al., “Comparisons Between Fly-Forward Converter and Flyback and Forward Converters,”Journal of Nanjing University of Aeronautics and Astronautics, vol. 29, No. 4, August 1997.
Chen, W. et al., “Theoretical Analysis and Experimental Verification of Fly-Forward Converter with LCD Magnetic Resetting,”Journal of Nanjing University of Aeronautics and Astronautics, vol. 29, No. 3, Jun. 1997.
Sebastian, J. et al., “A Complete Study of the Double Forward-Flyback Converter,” IEEE, 1988, pp. 142-149.
“Switching Technologies,” Sierracin/Power Systems, Chatsworth, CA. 1983.
Cuadra Jason E.
Hester Richard L.
Odell Arthur B.
Blakely , Sokoloff, Taylor & Zafman LLP
Power Integrations, Inc.
Sterrett Jeffrey L
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