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. 11, 2016
Filed:
Apr. 25, 2014
Tridonic Gmbh & Co. KG, Dornbirn, AT;
Thomas Küng, Nidfurn, CH;
Tridonic GmbH & Co KG, Dornbirn, AT;
Abstract
The invention relates to an operating circuit for an LED series, having: a converter, particularly a DC-DC converter, having a controllable switch (S) and an inductor (L) for converting an input voltage (Vin) fed to the operating circuit into a supply voltage for the LED series; —a control unit (SR) for driving the switch (S); —a secondary-side inductor (L) coupled to the inductor (LBUCK); —an envelope curve demodulator () for detecting the envelope curve of the voltage (V'LED) present at the secondary-side inductor (L); and—a compensating circuit () for compensating an error caused by the envelope curve demodulator () relating to the detection of the envelope curve.