Half-bridge isolation stage topologies

Details Half-bridge isolation stage topologies Half-bridge isolation stage topologies

2005-08-09

2005-08-09

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

Including automatic or integral protection means

Reexamination Certificate

active

06927987

ABSTRACT:
Half-bridge isolation stage topologies are provided in power converters, dividing an input voltage between capacitors. Primary transformer windings are periodically switched across respective capacitors. In current-fed implementations, the current flow through the primary windings is constrained as by an inductive element. In some implementations, a capacitor, primary winding and switch are connected in series in different orders in each of plural legs across the input. Current feed circuitry includes a current constraining component connecting nodes within each of respective legs. The switches of the isolation stage may be turned on with a fixed duty cycle, and a secondary circuit may comprise synchronous rectifiers.

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