Control apparatus for limiting voltage on a core reset capacitor

Details Control apparatus for limiting voltage on a core reset capacitor Control apparatus for limiting voltage on a core reset capacitor

1992-12-15

1994-11-08

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363 21, 363 79, 363 97, H02M 3335

Patent

active

053632893

ABSTRACT:
A power converter circuit requiting the periodic reset of a core of the power transformer includes a control circuit operative to alter a response of the converters voltage regulation feedback control to limit and/or control the power switch duty cycle to regulate a voltage of the reset capacitor whenever the reset capacitor sustains a voltage above a preset threshold.

REFERENCES:
patent: 4441146 (1984-04-01), Vinciarelli
patent: 4760512 (1988-07-01), Loftus
patent: 4809148 (1989-02-01), Barn
patent: 5019957 (1991-05-01), Wilkinson
patent: 5066900 (1991-11-01), Bassett
patent: 5099406 (1992-03-01), Harada et al.
patent: 5126931 (1992-06-01), Jitaru
patent: 5206800 (1993-04-01), Smith
"Zero Voltage PWM, Double Ended Converter" by, I. D. Jitaru HFPC--Proceedings, May 1992, pp. 394-405.
"Constant Frequency, Forward Converter With Resonant Transistion", I. Jitaru, HFPC '91 Proceedings, pp. 282-292, Jun. 1991.

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