Driver circuit for LED vehicle lamp

A vehicle lamp driver circuit includes a first LED string and a second LED string in series with a control switch having a feedback circuit for maintaining constant current regulation to control the sum of the current in each LED string and reduce switching noise. When there is reduced input voltage...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Johnsen, Andrew O, Madhani, Vipin
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL BASIC ELECTRIC ELEMENTS ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY PERFORMING OPERATIONS SEMICONDUCTOR DEVICES TRANSPORTING VEHICLES IN GENERAL
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A vehicle lamp driver circuit includes a first LED string and a second LED string in series with a control switch having a feedback circuit for maintaining constant current regulation to control the sum of the current in each LED string and reduce switching noise. When there is reduced input voltage, operation of the LED strings is provided by switching circuits that short-out one LED in each LED string.