Patent · US Active

Arrangement and method for operating an arrangement

US9591705B2 · kind B2 · utility

1Cited by

2References

8Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Norbert Hafner · Linz, AT
Ulrich Frei · Regensburg, DE
Stefan Grötsch · Regensburg, DE
Rainer Huber · Piding, DE

Key dates

Filing date	Jan 7, 2014
Grant date	Mar 7, 2017
Priority date	—
Expiry date	Jan 7, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method is set up to operate an arrangement that has N radiation-emitting semiconductor chips arranged in an electric series circuit. The arrangement includes multiple switching elements, wherein to each of the semiconductor chips one of the switching elements is connected electrically in parallel. The arrangement includes a controller for the mutually independent activation of the switching elements. The arrangement includes a constant current circuit for energizing the series circuit. When switching off, the respective semiconductor chip associated with a switching element is bridged electrically by the switching element. A protective module of the arrangement is set up to reduce or to prevent current peaks when one or more of the semiconductor chips is/are switched off.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.