STEP-DOWN CONVERTER FOR A LIGHT-EMITTING DIODE

The present invention relates to a step-down converter (101) for a light-emitting diode (110), comprising a first switch (201, 205, 291) and a second switch (202, 206, 292) which is connected in series with the first switch (201, 205, 291) between a supply voltage connection (211) and earth (215). T...

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Bibliographische Detailangaben
Hauptverfasser:	SACCAVINI, Lukas, LOCHMANN, Frank
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY
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Beschreibung
Zusammenfassung:	The present invention relates to a step-down converter (101) for a light-emitting diode (110), comprising a first switch (201, 205, 291) and a second switch (202, 206, 292) which is connected in series with the first switch (201, 205, 291) between a supply voltage connection (211) and earth (215). The step-down converter (101) also comprises a storage choke (212) which is connected in series with the first switch (201, 205, 291) between the supply voltage connection (211) and an output connection (213, 219). The step-down converter (101) also comprises the output connection (213, 219) which is designed to output a load current (702) to the light-emitting diode (110) on the basis of a choke current (701) through the storage choke (212). The step-down converter (101) also comprises a controller which is designed to operate the first switch (201, 205, 291) and the second switch (202, 206, 292) in the conductive state alternately and periodically depending on a dimming signal.