Series resonant power converter

Details Series resonant power converter Series resonant power converter

1991-01-16

1991-12-24

Beha, Jr., William H.

Electric power conversion systems

Current conversion

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

363 79, 363 98, H02M 3337

Patent

active

050758365

ABSTRACT:
A series resonant power converter in which a resonant copacitor is commonly used in a series resonant circuit and a parallel resonant circuit, whereby a capacitance of the resonant capacitor can be considerably decreased as compared with that of a tank circuit according to a prior art, so that an energy handled by the resonant capacitor can be decreased, which results in decreasing a size of the resonant circuit and also decreasing a power loss. The converter includes means for detecting and computing a voltage applied across a main switch means in its OFF-state and a control circuit for driving the main switch means to its ON-state when the detected and computed value of the voltage drops to a minimum voltage required to sustain oscillation of the series resonant circuit. The minimum voltage is computed by a detecting circuit for detecting an input voltage, a detecting circuit for detecting a voltage of a second resonant circuit and a detecting circuit for detecting a DC output voltage converted to a primary side of a main transformer.

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MC 14538B, Motorola, pp. 7-498, 1978.
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"Linear and Interface Integrated Circuits", Series E, Motorola, pp. 1-6, 1-7, 4-98 thru 4-117, 1985.
PAL 16R8 Family, Monolithic M.M.I. Memories, pp. 5-26 to 5-28, 5-48, 1988.

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