Full-fluxed, single-ended dc converter

Details Full-fluxed, single-ended dc converter Full-fluxed, single-ended dc converter

H - Electricity

02

M

321/27

H02M 3/335 (2006.01)

Patent

CA 1293020

FULL-FLUXED, SINGLE-ENDED DC CONVERTER Abstract of the Disclosure A full-fluxed, single-ended, DC converter is disclosed. The converter includes a transformer having primary and secondary windings magnetically coupled and wound about a common core. A regulation switch is connected in series with the primary winding and allows the primary current to be interruptedin a time-controlled fashion, causing the desired output characteristics to be achieved. The series combination of a storage capacitor and reset switch are provided in parallel with the regulation switch to initiate bidirectional magnetizing current flow in the primary winding and, hence, bidirectional flux excursions in the transformer core. As a result, power transfer characteristics are improved. In the preferred embodiment, the regulation and reset switches arecomplementary field effect transistors (FETs) whose sources and gates are tied together allowing their gates to be coupled to a single bipolar drive signal. The resulting configuration allows full-fluxed operation to be achieved in a simple manner ensuring complementary operation of the switches.

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