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:
Nov. 28, 2017
Filed:
Jul. 10, 2014
Osram Gmbh, Munich, DE;
Rene Twardzik, Traunreut, DE;
OSRAM GmbH, Munich, DE;
Abstract
Various embodiments may relate to a load driving circuit and an illumination apparatus including the same. The load driving circuit includes a Single-Ended Primary Inductor Converter (SEPIC) converter adapted to convert an input system voltage into a DC output voltage, and a BUCK converteradapted to regulate a current and provide the regulated current to a load. The load driving circuit further includes a first diode and a second diode which are connected so that the SEPIC converter and the BUCK converter share one switch. According to various embodiments, it is possible to obtain constant current output characteristics and high power factor with a simple circuit structure and a low cost.