Multi-output switching power supply having an improved secondary

Details Multi-output switching power supply having an improved secondary Multi-output switching power supply having an improved secondary

1993-03-25

1995-06-13

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

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

363 89, 363127, H02M 3335

Patent

active

054249325

ABSTRACT:
A switching power supply wherein high speed switching and high output voltages are obtained by utilizing an auxiliary power supply and a synchronizing signal having a sawtooth shaped waveform, whereby delay time in a control signal to an FET switch is substantially reduced. The switching power supply comprises a secondary output circuit which is supplied with a square waveform voltage and utilizes an FET switch which controls the width of pulses chopped from the square waveform voltage and causes the output circuit to produce a direct current output voltage having a set value. The control signal to the FET switch is produced by a control circuit which is independently powered by the auxiliary power supply and supplied with the synchronizing signal.

REFERENCES:
patent: 4347559 (1982-08-01), Sturgeon
patent: 4609982 (1986-09-01), Gohda
patent: 4945465 (1990-07-01), Marinus et al.
patent: 5038266 (1991-08-01), Callen et al.
patent: 5162663 (1992-11-01), Combs et al.
patent: 5289359 (1994-02-01), Ziermann

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