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:
Mar. 08, 2016
Filed:
Feb. 08, 2013
Koninklijke Philips N.v., Eindhoven, NL;
Bing Lai, Shanghai, CN;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A driver circuit () for operating at least one load, such as a LED unit () is provided, comprising a switching controller () configured to at least control a switching device () between the discharging and charging mode of a storage inductor, in dependence on the inductor current (I) and to control a duty cycle of the switching operation in dependence on at least one compensation signal, the compensation signal corresponding to either the input (V) voltage or the output voltage (V), so that in case of a variation of the input (V) or output voltage (V), the average output current, provided to the load, is maintained substantially constant.