High power converter architecture

摘要

The power converter is an integration of three topologies which include a forward converter topology, a flyback converter topology, and a resonant circuit topology. The combination of these three topologies functions to transfer energy using three different modes. A first mode, or forward mode, is a forward energy transfer that forwards energy from the input supply to the output load in a manner similar to a forward converter. A second mode, or flyback mode, stores and releases energy in a manner similar to a flyback converter. A third mode, or resonant mode, stores and releases energy from the resonant tank using a resonant circuit and a secondary side forward-type converter topologies.

主权项

1. A power converter circuit comprising:
a. a transformer having a primary winding coupled to an input supply voltage and a secondary winding; b. an output circuit coupled to the secondary winding; c. a primary switch coupled in series to the primary winding; d. a resonant circuit coupled in parallel to the primary winding, wherein the resonant circuit comprises an auxiliary switch and a resonant tank; and e. a controller coupled to the primary switch, wherein the power converter circuit is configured to forward energy from the input supply voltage to the output circuit when the primary switch is ON, to store energy from leakage inductance, magnetizing inductance, and parasitic capacitances as resonant energy in the resonant tank, and to deliver the stored resonant energy to the output circuit.