Isolated converter with improved current sensing

The invention relates to an isolated converter (100) for providing a current supply to an LED load, comprising: a galvanic isolation stage (101); a sensing circuit (103) on a primary side of the isolation stage (101), which is magnetically coupled to a secondary side of the isolation stage (101); wh...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Netzer, Harald, Stark, Stefan
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The invention relates to an isolated converter (100) for providing a current supply to an LED load, comprising: a galvanic isolation stage (101); a sensing circuit (103) on a primary side of the isolation stage (101), which is magnetically coupled to a secondary side of the isolation stage (101); wherein the sensing circuit (103) is configured to receive a feedback signal that is proportional to a secondary side current; and a control unit (105) configured to determine an output current of the converter (100) based on the feedback signal; wherein at least one electrical characteristic of the sensing circuit (103) and/or the control unit (105) is adjustable to convert the feedback signal from a first ratio to a second ratio to the secondary side current.