Switching power supply

Details Switching power supply Switching power supply

2008-03-04

2008-03-04

Patel, Rajnikant B. (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S016000, C363S098000

Reexamination Certificate

active

11255007

ABSTRACT:
A switching power supply includes a first series circuit formed by connecting first and second switching elements in series at both ends of a direct-current power source, a second series circuit formed by connecting a resonant capacitor, a resonant reactor, and a primary winding of a transformer in series at both ends of the switching element, a rectifying-smoothing circuit configured to rectify and smooth a voltage generated on a secondary winding of the transformer, and a control circuit configured to turn the first and second switching elements and on and off alternately based on an output voltage from the rectifying-smoothing circuit. Here, the control circuit sets an on-period of the second switching element to a predetermined time period longer than a half value of a cycle of a resonant current attributable to the resonant reactor and the resonant capacitor, and controls an on-period of the first switching element based on the output voltage from the rectifying-smoothing circuit.

REFERENCES:
patent: 5430633 (1995-07-01), Smith
patent: 5808879 (1998-09-01), Liu et al.
patent: 6788556 (2004-09-01), Hosotani et al.
patent: 2006/0098464 (2006-05-01), Osaka et al.
patent: 2003-9525 (2003-01-01), None
U.S. Appl. No. 11/610,626, filed Dec. 14, 2006, Kyono.
U.S. Appl. No. 11/621,284, filed Jan. 9, 2007, Kyono.
U.S. Appl. No. 11/417,153, filed May 4, 2006, Kyono.

Affiliated with

Also associated with

Rating

Switching power supply does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switching power supply, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching power supply will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3915749