Single ended forward DC-to-DC converter providing enhanced resetting for synchronous rectification
October 11, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesOptimal resetting of the transformer's core in single ended forward converters Single ended forward converter with resonant commutation of magnetizing current Full-fluxed, single-ended DC converter High frequency switched mode resonant commutation power supply DC-DC converter Fixed frequency single ended forward converter switching at zero voltage Pulse width modulated DC/DC converter with reduced ripple current coponent stress and zero voltage switching capability Zero-voltage switching power converter with ripple current cancellation Power converter possessing zero-voltage switching and output isolation Fixed frequency converter switching at zero voltage InventorsAssigneeApplicationNo. 730684 filed on 10/11/1996US Classes:363/21.06, Having synchronous rectifier363/16Having transistorized inverterExaminersPrimary: Wong, Peter S.Assistant: Jardieu, Derek J. Attorney, Agent or FirmForeign Patent References
International ClassH02M 003/335AbstractA single ended forward DC-to-DC converter includes a transformer having a primary winding electrically connected to a primary switch and a secondary winding electrically connected to a secondary switch and a clamping capacitor. The clamping capacitor stores the magnetization energy from the secondary winding when the primary switch is turned off, thus causing the transformer core to be reset during the period that the primary switch remains off. The converter can use mosfets as the primary and secondary switches, such that a change in the voltage at the secondary winding of the transformer, due to the turning off of the primary switch, results in an automatic turning on of the secondary switch. The combination of the clamping capacitor and the mosfet switches increases the simplicity of the DC-to-DC converter while eliminating undesirable characteristics such as dead time and voltage stresses on the switches. The DC-to-DC converter of the present invention can be used to carry out synchronous rectification and zero voltage switching.Other References
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