HIGH-BANDWIDTH ANALOG-CONTROLLED DC BREAKER ON DC/DC CONVERTER WITH GALVANIC ISOLATION

摘要

A galvanic isolator circuit and method provide for galvanically isolating and current limiting a power source from a load. A direct current (DC) input voltage (“v_in”) and an input current (“i_in”) are received. A full-bridge rectifier is soft switched to synthesize a first alternating voltage waveform that magnetically couples through a transformer to induce a second alternating voltage waveform with galvanic isolation from the first alternating voltage waveform, preventing potentially-faulted load from a source. The second alternating voltage waveform is rectified to produce a direct current (DC) output voltage (“v_o”) having output current (“i_o”) through more than one drive transistor. The more than one drive transistor is current limited to reduce or prevent brown-out, black-out, or protective race conditions in the non-faulted portions of DC power generation systems and DC distribution electrical power systems.