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:
Apr. 25, 2017
Filed:
Oct. 08, 2013
Philips Lighting Holding B.v., Eindhoven, NL;
Andrew Ulrich Rutgers, Eindhoven, NL;
Reinhold Elferich, Aachen, DE;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
The present invention relates to a driver device () for driving a load (), comprising input terminals () for connecting the driver device () to a voltage supply () and for receiving an input voltage (V) from the voltage supply (), at least one output terminal for connecting the driver device () to the load (), an electromagnetic converter unit () for converting a drive voltage to an output voltage (V) for powering the load (), two controllable switches () connected to the input terminals () for providing a variable voltage as the drive voltage to the electromagnetic converter unit (), and a control unit () for controlling a first of the controllable switches () on the basis of an electrical signal (V) measured at a member of the electromagnetic converter unit () and a threshold level () and for controlling a second of the controllable switches () on the basis of a control parameter (, t) set to a value that the on-times of the controllable switches () have independent durations.