Title:
ARRANGEMENT AND METHOD FOR OPERATING AN ARRANGEMENT
Document Type and Number:
WIPO Patent Application WO/2014/114486
Kind Code:
A3
Abstract:
The invention relates to at least one embodiment of a method which is set up to operate an arrangement (1). The arrangement (1) has N radiation-emitting semiconductor chips (2). The semiconductor chips (2) are arranged in an electric series circuit. The arrangement (1) comprises multiple switching elements (3), wherein to each of the semiconductor chips (2) one of the switching elements (3) is connected electrically in parallel. The arrangement (1) includes an activation unit (4) for the mutually independent activation of the switching elements (3). The arrangement (1) comprises a constant current circuit (5) for energizing the series circuit. When switching off, the respective semiconductor chip (2) associated with a switching element (3) is bridged electrically by the switching element (3). A protective module (6) of the arrangement (1) is set up to reduce or to prevent current peaks when one or more of the semiconductor chips (2) is/are switched off.
Inventors:
HÄFNER NORBERT (DE)
FREI ULRICH (DE)
GRÖTSCH STEFAN (DE)
HUBER RAINER (DE)
FREI ULRICH (DE)
GRÖTSCH STEFAN (DE)
HUBER RAINER (DE)
Application Number:
PCT/EP2014/050141
Publication Date:
September 18, 2014
Filing Date:
January 07, 2014
Export Citation:
Assignee:
OSRAM OPTO SEMICONDUCTORS GMBH (DE)
International Classes:
H05B44/00
Domestic Patent References:
| WO2005101916A1 | 2005-10-27 | |||
| WO2010055456A1 | 2010-05-20 | |||
| WO2009013676A2 | 2009-01-29 |
Foreign References:
| DE102009025752A1 | 2010-12-09 | |||
| US20110273102A1 | 2011-11-10 | |||
| US20120243562A1 | 2012-09-27 | |||
| US20070262724A1 | 2007-11-15 |
Other References:
W D HOWELL: "App Note 11: An overview of the electronic drive techniques for intensity control and colour mixing of low voltage light sources such as LEDs and LEPs", 31 May 2002 (2002-05-31), pages 1 - 9, XP055114996, Retrieved from the Internet [retrieved on 20140423]
Attorney, Agent or Firm:
EPPING HERMANN FISCHER PATENTANWALTSGESELLSCHAFT MBH (München, DE)
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