A FLYBACK CONVERTER AND LED DRIVER USING THE FLYBACK CONVERTER

A dual-switch flyback converter in which the output current, in operating regions where a constant output current is required, can be regulated from the primary side. The output current is regulated constantly regardless of the input and output voltages by compensating the peak current in the primar...

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Bibliographische Detailangaben
Hauptverfasser:	ZHOU, Yufei, LUO, Henglian, CLAESSENS, Dennis
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	A dual-switch flyback converter in which the output current, in operating regions where a constant output current is required, can be regulated from the primary side. The output current is regulated constantly regardless of the input and output voltages by compensating the peak current in the primary winding with the average current in the clamping diode, or the conduction duration of the clamping diode. L'invention concerne un convertisseur à transfert indirect, à double commutateur, permettant de réguler, à partir du primaire, le courant de sortie dans des régions de fonctionnement requérant un courant de sortie constant. Le courant de sortie est régulé de manière constante indépendamment des tensions d'entrée et de sortie, au moyen de la compensation du courant de crête dans l'enroulement primaire avec le courant moyen dans la diode de blocage, ou la durée de conduction de la diode de blocage.