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. 21, 2019
Filed:
May. 14, 2012
Robertus Leonardus Tousain, Eindhoven, NL;
Redouane Eddeane, Utrecht, NL;
Dennis Johannes Antonius Claessens, Eindhoven, NL;
Philip Louis Zulma Vael, Temse, BE;
Jack Jiang, Shanghai, CN;
Robertus Leonardus Tousain, Eindhoven, NL;
Redouane Eddeane, Utrecht, NL;
Dennis Johannes Antonius Claessens, Eindhoven, NL;
Philip Louis Zulma Vael, Temse, BE;
Jack Jiang, Shanghai, CN;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
A LED retrofit driver circuit () is provided, comprising at least an input () for receiving an operating voltage from a power supply (), an output () for connection to one or more LED units (), a power converter () connected with said input () and said output () and configured to provide a lamp current () at said output () during operation in at least a first and a second operating state. To provide a versatile circuit (), allowing operation with a variety of power supplies and under various load conditions, in said first operating state, the power converter () is adapted to switch between a high current generating mode (), in which the power converter () is configured to draw current pulses from said power supply () to provide a first average input current (), and an OFF mode () in which no current is drawn from said power supply (). In said second operating state, said power converter () is adapted at least to operate in a low current generating mode (), in which the power converter () is configured to draw a current from said power supply () to provide a second average input current () which is lower than said first average input current ().