The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2002
Filed:
Nov. 20, 2000
Jinrong Qian, Croton-on-Hudson, NY (US);
Da Feng Weng, Yorktown Heights, NY (US);
Abstract
An switching converter, having a transformer having primary, secondary and auxiliary windings, an actively controlled switch, a capacitor and a first passive switch in series across the primary, the auxiliary winding of the transformer and a second passive switch being connected in series to the node between the capacitor and first passive switch, with the active switch being connected to a side of the primary winding opposite the first passive switch. The method energizes a transformer core with the primary winding and discharges a capacitor during an ON state; and clamps a voltage across the active switch with the capacitor, and transfers magnetizing energy to the secondary winding during an OFF state, to efficiently transfer energy corresponding to a switching transient to the load while limiting maximum active switch voltage.