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:
May. 17, 2011
Filed:
Nov. 18, 2008
Timothy Chen, Aurora, OH (US);
James K. Skully, Willoughby, OH (US);
Timothy Chen, Aurora, OH (US);
James K. Skully, Willoughby, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A single-converter circuit-based LED driver circuit () with isolated multi-channel outputs is disclosed. The circuit () includes an IC control circuit (), a plurality of isolated output channels () each having an output current sensing and conditioning circuit (), and an output current regulation circuit (). The output current regulation circuit () includes a voltage-sensing transformer winding (T) that senses an output voltage level across a secondary side of the circuit (), and a peak output current sensing component () that senses output currents from the isolated output channels and determines which channel has a highest current output. Additionally, the circuit () facilitates providing output current regulation when detected output voltage is below a predetermined threshold, and providing output current regulation when the detected output voltage is above the predetermined threshold.