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:
Jan. 14, 2014
Filed:
Aug. 18, 2011
George Young, Blackrock, IE;
Colin Gillmor, Limerick, IE;
George Young, Blackrock, IE;
Colin Gillmor, Limerick, IE;
Texas InstrumentsIncorporated, Dallas, TX (US);
Abstract
A power converter for delivering power to a load at a regulated voltageincludes a regulating stage receiving an unregulated supplyand having a main transformer. Switchesandare arranged in a half-bridge connect the transformer primaryto the unregulated supplyto drive the load via a rectifying stage connected to the transformer secondary. The on-time of the switch is controlled by a controllerto effect the regulation over a range of values of the unregulated supply. An auxiliary transformerhas a secondary windingconnected in series with the main transformer primaryand a primary winding that is selectively driven via a switch. A comparatordetects a low voltage event within the regulating stage, such as a drop in the intermediate voltage at. The primary windingof the auxiliary transformeris driven during the low voltage event.