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:
Nov. 24, 2015
Filed:
Dec. 20, 2011
Yimin Chen, Palatine, IL (US);
Nicholaos Hillas, Willowbrook, IL (US);
Ajay Tripathi, Libertyville, IL (US);
Kaustuva Acharya, Bartlett, IL (US);
Raman Nair Harish Gopala Pillai, Mt Prospect, IL (US);
Yimin Chen, Palatine, IL (US);
Nicholaos Hillas, Willowbrook, IL (US);
Ajay Tripathi, Libertyville, IL (US);
Kaustuva Acharya, Bartlett, IL (US);
Raman Nair Harish Gopala Pillai, Mt Prospect, IL (US);
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A light driver having a primary side driver configured to convert an input from a mains power supply to a primary side output, and a secondary side driver coupled to the primary side driver and configured to rectify and filter the primary side output to provide a driver output current for driving a light load. A microcontroller controls the light driver at start-up so that the secondary side driver is powered-on and the primary side driver is in a non-powered state during a soft-start period, and subsequent to the soft-start period the secondary side driver is set to be in a low output state when powered-on and thereafter set to a state so that driver output current of the secondary side driver increases the light output from the light load from an initial dim level to a nominal dim level without flicker.