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:
Dec. 23, 2014
Filed:
Mar. 28, 2012
Harald Josef Gunther Radermacher, Aachen, DE;
Pieter Gerrit Blanken, Nuenen, NL;
Yifeng Qiu, Eindhoven, NL;
Haimin Tao, Eindhoven, NL;
Ronald Van Langevelde, Waalre, NL;
Ralph Kurt, Eindhoven, NL;
Harald Josef Gunther Radermacher, Aachen, DE;
Pieter Gerrit Blanken, Nuenen, NL;
Yifeng Qiu, Eindhoven, NL;
Haimin Tao, Eindhoven, NL;
Ronald Van Langevelde, Waalre, NL;
Ralph Kurt, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
Driver device and a corresponding driving method for driving a load, in particular an LED assembly comprising one or more LEDs. To provide a better performance, better cost-efficiency, improved power factor and reduced losses, a driver device () is provided comprising a rectifier unit () for rectifying a received AC supply voltage (V), load terminals () for providing a drive voltage (V) and/or a drive current (I) for driving said load, a capacitive storage unit () coupled between said rectifier unit and said load terminals for storing electrical energy provided by said rectifier unit and providing electrical energy to said load, and a bridge switching unit () coupled between said rectifier unit and said load for switching said capacitive storage unit into a load current path from said rectifier unit to said load terminals with a desired polarity and for switching said capacitive storage unit out of said load current path.