Verfahren und Schaltung zum Schutz von Leds von Transienten Strömen

Details

Veröffentlichungs-Nr.

EP3370479

Aktenzeichen

EP17158632

Anmeldetag

1. März 2017

Veröffentlichung

2. Oktober 2019

Erteilung

2. Oktober 2019

Rechtsraum

EP

IPC

H05B33/08

Abstract

A driver device for semiconductor light sources comprises an output current path and an output with a first node and a second node. A controllable first switch on said output current path is coupled to one of said nodes, and an output capacitance is coupled to said output and to said first switch so that closing said first switch enables a discharging current to flow from said output capacitance through semiconductor light sources coupled between said first and second nodes. A control circuit is coupled to a control input of said first switch and configured to selectively open and close it. Said control circuit is configured to implement a closing sequence in closing said first switch, said closing sequence consisting of a series of closing pulses that become longer towards the end of the closing sequence.

Anmelder

Firma

Helvar Oy Ab

Land

🇫🇮 Finnland

Fachgebiete