Verbesserter Überlastschutz für einen lichtemittierenden Diodentreiber

Details

Veröffentlichungs-Nr.

EP2816872

Aktenzeichen

EP13172676

Anmeldetag

19. Juni 2013

Veröffentlichung

18. November 2020

Erteilung

18. November 2020

Rechtsraum

EP

IPC

H05B45/3725H05B45/56

Abstract

According to an example embodiment, a driver apparatus for driving one or more light emitting diodes is provided. The driver apparatus comprises a power converter portion for converting operating power supplied to the driver apparatus into a driving current for light emitting diodes, the power converter portion comprising one or more power converter stages, a control portion for issuing control signals to control the power converter portion, a current monitoring portion for providing a current measurement signal indicative of a current in a certain power converter stage of the power converter portion, and a temperature monitoring portion for providing a temperature measurement signal indicative of ambient temperature of the driver apparatus, wherein the control portion is configured to issue, in response to the current measurement signal indicating a current exceeding a threshold value, one or more control signals for limiting the output power of said certain power converter stage and to set the threshold value based on the temperature measurement signal. Moreover, a computer program for controlling operation of the driver apparatus is provided.

Anmelder

Firma

Helvar Oy Ab

Land

🇫🇮 Finnland

Fachgebiete