Light emitting diode circuit with accurate current monitoring of two or more different LED strings

Light emitting diode circuit with accurate current monitoring of two or more different LED strings

This disclosure is directed to a light emitting diode (LED) circuit for driving two or more different LED strings, which may be controlled in a complimentary fashion. The LED circuit includes current monitoring capabilities that are configured to monitor current through the two or more different LED...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Milanesi, Paolo, Fragiacomo, Fabio
Format: Patent
Sprache:eng
Schlagworte:
ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
PERFORMING OPERATIONS
TRANSPORTING
VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:This disclosure is directed to a light emitting diode (LED) circuit for driving two or more different LED strings, which may be controlled in a complimentary fashion. The LED circuit includes current monitoring capabilities that are configured to monitor current through the two or more different LED strings. The circuit is designed in a way that can reduce or eliminate excessive sensing pins that are otherwise needed for the current monitoring. According to this disclosure, for example, very accurate current monitoring can be achieved by using two or more sensing resistors while only using two sensing pins for the current monitoring through two or more different LED strings.