Forward-flyback converter with active-clamp circuit

Details Forward-flyback converter with active-clamp circuit Forward-flyback converter with active-clamp circuit

2011-08-30

2011-08-30

Vu, Bao Q (Department: 2838)

Electric power conversion systems

Current conversion

Including automatic or integral protection means

C363S021020, C363S021010, C363S021040, C363S021090

Reexamination Certificate

active

08009448

ABSTRACT:
The present invention discloses a forward-flyback converter with active-clamp circuit. The secondary side of the proposed converter is of center-tapped configuration to integrate a forward circuit and a flyback circuit. The flyback sub-circuit operating continuous conduction mode is employed to directly transfer the reset energy of the transformer to the output load. The forward sub-circuit operating discontinuous conduction mode can correspondingly adjust the duty ratio with the output load change. Under the heavy load condition, the mechanism of active-clamp flyback sub-circuit can provide sufficient resonant current to facilitate the parasitic capacitance of the switches to be discharged to zero. Under the light load condition, the time interval in which the resonant current turns from negative into positive is prolonged to ensure zero voltage switching function. Meanwhile, the flyback sub-circuit wherein the rectifier diode is reverse biased is inactive in order to further reduce the power losses.

REFERENCES:
patent: 5598324 (1997-01-01), Imamura et al.
patent: 6069803 (2000-05-01), Cross
patent: 6366474 (2002-04-01), Gucyski
patent: 6496392 (2002-12-01), Odell
patent: 7649757 (2010-01-01), Lin
patent: 7920391 (2011-04-01), Vinciarelli
patent: 2004/0085050 (2004-05-01), Jinno
patent: 2004/0179377 (2004-09-01), Tamura
patent: 2008/0084723 (2008-04-01), Balakrishnan et al.
patent: 2009/0268489 (2009-10-01), Lin et al.

Affiliated with

Also associated with

Rating

Forward-flyback converter with active-clamp circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Forward-flyback converter with active-clamp circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Forward-flyback converter with active-clamp circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2646113