Constant frequency zero-voltage-switching multi-resonant convert

Details Constant frequency zero-voltage-switching multi-resonant convert Constant frequency zero-voltage-switching multi-resonant convert

1989-05-05

1990-06-05

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323224, 323271, G05F 146

Patent

active

049317164

ABSTRACT:
A zero-voltage multi-resonant converter that operates at constant frequency. In the zero-voltage multi-resonant converter, the resonant circuit is formed in a .pi.-network with resonant capacitors connected in parallel with the switches. In practicing the present invention, certain rules are applied to derive a CF ZVS-MRC from a PWM converter. In particular, one resonant capacitor is placed in parallel with the active switch, which may be either uni-directional or bi-directional, the rectifying switch is replaced by another active switch, which may also be uni-directional or bi-directional, another resonant capacitor is placed in parallel with the other active switch, and an inductor is inserted in the loop containing the two switches. This loop can also contain voltage sources and filter or blocking capacitors.

REFERENCES:
patent: 4720668 (1988-01-01), Lee et al.
patent: 4727308 (1988-02-01), Huljak et al.
patent: 4833584 (1989-05-01), Divan

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