Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2005-09-20
2009-06-30
Han, Jessica (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S021020, C363S056080, C363S056110
Reexamination Certificate
active
07554820
ABSTRACT:
A series resonant Dc-DC converter powers an audio amplifier as a load. The series resonant DC-DC converter may include a power input stage, a switching stage, a series resonant stage, a transformer stage and a power output stage. The series resonant DC-DC converter further may include a clamping stage and a leakage inductance canceling stage. The clamping stage may operate to clamp an excess voltage generated at least by a leakage inductance and a parasitic capacitance. The leakage inductance canceling stage may operate to generate a voltage drop corresponding to a voltage drop generated by the leakage inductance. The generated voltage drop may be subject to clamping. The clamping stage may operate under all load conditions without any influence of the leakage inductance. As a result, the series resonant converter may achieve improved load regulation.
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Brinks Hofer Gilson & Lione
Han Jessica
Harman International Industries Incorporated
Pham Emily
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