Patent · US Active

Circuit arrangement for operating light sources

US9686827B2 · kind B2 · utility

0Cited by

3References

4Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Markus Heckmann · Munich, DE
Joachim Mühlschlegel · Drolshagen, DE
Thomas Pollischansky · Stadtbergen, DE
Harald Schmitt · Hersbruck, DE

Key dates

Filing date	Nov 5, 2014
Grant date	Jun 20, 2017
Priority date	—
Expiry date	Nov 5, 2034

Classification

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

Abstract

A circuit arrangement for operating light sources includes input terminals for a power supply system voltage, a first rectifying circuit, a boost converter having output terminals, a half-bridge arrangement having two switches, which is connected to the output terminals of the boost converter, an inductance, the first terminal of which is coupled to the centre point of the half-bridge, and a second rectifying circuit, the first input terminal of which is coupled to the second terminal of the inductance and the second input of which is coupled to one of the output terminals of the boost converter. The output terminals of the second rectifying circuit are coupled to the inputs of a current-compensated inductor. At least one light source is connected to the output terminals of the current-compensated inductor, and the output terminals of the current-compensated inductor are coupled to an output terminal of the boost converter via filter capacitors.

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