LED DRIVER HAVING SELF-ADJUSTING FEED-FORWARD CONTROL

Disclosed is a driver (1) for at least one LED (5). The driver (1) comprises a switched-mode power supply, SMPS, (27, 102, 103) configured to supply the at least one LED (5); a closed-loop control (2) for regulating a controlled variable (28) supplied to the at least one LED (5) in accordance with a...

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Bibliographische Detailangaben
Hauptverfasser:	Schertler, Markus, Dimic, Nikola
Format:	Patent
Sprache:	eng ; fre ; ger
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:	Disclosed is a driver (1) for at least one LED (5). The driver (1) comprises a switched-mode power supply, SMPS, (27, 102, 103) configured to supply the at least one LED (5); a closed-loop control (2) for regulating a controlled variable (28) supplied to the at least one LED (5) in accordance with a reference variable (21); and a feed-forward control (3) for adjusting a control variable (24) of the closed-loop control (2) in dependence of a frequency component of a control error (22) of the closed-loop control (2) and a frequency component (29) of a DC link/bus voltage (113) of the SMPS (27, 102, 103). This avoids an adjustment of a feed-forward (FEFO) gain at a design stage, which is cumbersome and prone to inaccuracies.