Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2005-04-12
2005-04-12
Riley, Shawn (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S021080
Reexamination Certificate
active
06879499
ABSTRACT:
A DC-DC converter includes an ON-timing delay circuit in which, when an ON signal is output from a power switch driving circuit in a control IC to a power switch, the ON timing of the power switch is delayed by hindering the start of the ON operation of the power switch. An early turnoff circuit is provided in which, during delay of the ON timing of the power switch, a commutating synchronous rectifier has an ON and OFF switching operation that is inverse with respect to that of the power switch. A delay eliminating circuit is provided which promptly stops the delay operation of the ON-timing delay circuit when detecting the turnoff of the commutating synchronous rectifier which is caused by a drop in the gate of a commutating synchronous rectifier. When the delay operation of the ON-timing delay circuit continues after the turnoff the commutating synchronous rectifier, a loss caused by the continuation of the delay operation occurs. The problem can be prevented by the delay eliminating circuit.
REFERENCES:
patent: 5726869 (1998-03-01), Yamashita et al.
patent: 5742491 (1998-04-01), Bowman et al.
patent: 04-127869 (1992-04-01), None
patent: 10-174431 (1998-06-01), None
patent: 11-206118 (1999-07-01), None
patent: 2000-260639 (2000-09-01), None
patent: 2000-262051 (2000-09-01), None
patent: 2002-247848 (2002-08-01), None
patent: 2002-247849 (2002-08-01), None
Keating & Bennett LLP
Murata Manufacturing Co. Ltd.
Riley Shawn
LandOfFree
DC-DC converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with DC-DC converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC-DC converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3426842