Extended range switch mode power supply

Details Extended range switch mode power supply Extended range switch mode power supply

1995-12-21

1997-11-04

Nguyen, Matthew V.

Electric power conversion systems

Current conversion

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

H02M 3335

Patent

active

056846800

ABSTRACT:
A push-pull or forward switching power supply is operable over a voltage range of 4.5 to 40 volts at high efficiency. At low voltages a primary winding or pair of windings are activated by a PWM control to regulate the output current. At high voltages, an additional primary winding in series with each of the other winding or windings is also activated by a PWM control.

REFERENCES:
patent: 3778677 (1973-12-01), Kriege
patent: 4223378 (1980-09-01), Koizumi
patent: 4885675 (1989-12-01), Henze et al.
patent: 5140513 (1992-08-01), Yokoyama
patent: 5181160 (1993-01-01), Okamoto et al.
patent: 5295058 (1994-03-01), Mcgreevy
Maresca, T.J., "Regulated DC-to-DC Converter," IEEE Transaction on Magnetics, Mar. 1970.

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