Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2006-02-28
2006-02-28
Han, Jessica (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S021100, C363S021180, C363S131000
Reexamination Certificate
active
07006363
ABSTRACT:
A DC-DC converter circuit for stabilizing the output voltage of the secondary side by correcting the input voltage by using a simple circuit, where no state measurement circuit is necessary at the secondary side. The circuit includes a transformer; a switching circuit including a main switching element which is connected to the primary winding of the transformer in series and has a control terminal for controlling the main switching element, wherein the main switching element is PWM-controlled so as to stabilize an output voltage of the secondary side; a driving circuit for generating PWM driving pulses; and a correction circuit for outputting a voltage whose level is in inverse proportion to an input voltage of the DC-DC converter circuit. An output of the driving circuit is connected to the control terminal of the main switching element and to the correction circuit.
REFERENCES:
patent: 4017782 (1977-04-01), Wheeler
patent: 5430405 (1995-07-01), Cohen
patent: 5742494 (1998-04-01), Brakus et al.
patent: 5946201 (1999-08-01), Kim
patent: 41 05 463 (1992-08-01), None
patent: 11-252908 (1999-09-01), None
Han Jessica
Nixon & Vanderhye PC
Shindengen Electric Manufacturing Co., LTD
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