Multiple output flyback converter having improved cross-regulati

Details Multiple output flyback converter having improved cross-regulati Multiple output flyback converter having improved cross-regulati

1998-11-16

2000-06-20

Berhane, Adolf Deneke

Electric power conversion systems

Current conversion

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

363 56, 363 95, H02M 3335

Patent

active

060785098

ABSTRACT:
For use with a flyback converter having a modulator for providing a main switch control signal thereto and main and cross-regulated output circuits, the cross-regulated output circuit subject to ringing and resulting voltage excursion, a voltage excursion controller and a method of operating the same. In one embodiment, the controller includes: (1) a delay circuit, coupled to the modulator, that generates a delay signal based on the main switch control signal and (2) an auxiliary switch, associated with the cross-regulated output circuit, that receives the delay signal and opens to isolate at least a portion of the ringing within said cross-regulated output circuit.

REFERENCES:
patent: 4870555 (1989-09-01), White
patent: 5173847 (1992-12-01), Suzuki
patent: 5206800 (1993-04-01), Smith
patent: 5235502 (1993-08-01), Vinciarelli et al.
patent: 5519599 (1996-05-01), Shinada et al.
patent: 5742491 (1998-04-01), Bowman et al.

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