Electric power conversion systems – Current conversion – Including automatic or integral protection means
Reexamination Certificate
2008-05-27
2008-05-27
Sterrett, Jeffrey L. (Department: 2838)
Electric power conversion systems
Current conversion
Including automatic or integral protection means
C361S018000, C361S090000
Reexamination Certificate
active
11114208
ABSTRACT:
The switched mode power supply comprises an inductor, a switching transistor, a controller circuit coupled to the switching transistor, a rectifying means and a feedback regulation loop for providing a stabilised output voltage. It comprises further a protection circuit coupled to an output or input of a comparator of the controller circuit for providing an overvoltage protection in case of a failure of the regulation loop. The protection circuit comprises in particular an integrating circuit and a comparating circuit. In a preferred embodiment, an output of the protection circuit is coupled to a sense input of the controller circuit, for switching off the controller circuit immediately in case of a failure. In another aspect of the invention, the protection circuit comprises further a second comparator coupled to the first comparating circuit for the surveillance of the input voltage of the switched mode power supply, and for the detection of a short circuit of the inductor or the rectifying means.
REFERENCES:
patent: 4847720 (1989-07-01), Dezonno
patent: 4890210 (1989-12-01), Myers
patent: 5091816 (1992-02-01), Juntenen
patent: 5617013 (1997-04-01), Cozzi
patent: 5625279 (1997-04-01), Rice et al.
patent: 6055167 (2000-04-01), Shamkovich et al.
patent: 7120000 (2006-10-01), Pidutti et al.
patent: 7164591 (2007-01-01), Soldano
patent: 0 582 813 (1994-02-01), None
patent: 0 806 833 (1997-11-01), None
patent: WO 96/28878 (1996-09-01), None
Unitrode Corporation, UC3854 Datasheet, High ower Factor Preregulator, Unitrode, Jun. 1998, pp. 1-9.
Search Report dated Nov. 12, 2004.
Grellmann Harald
Lopez Daniel
Louvel Jean-Paul
Behm Harry
Levy Robert B.
Sterrett Jeffrey L.
Villabon Jorge Tony
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