Title :
Primary-controlled high-PF flyback converters deliver constant dc output current
Author :
Adragna, Claudio
Author_Institution :
STMicroelectron., Agrate Brianza, Italy
fDate :
Aug. 30 2011-Sept. 1 2011
Abstract :
This paper describes a control method of high-power-factor flyback converters for regulating their dc output current using only quantities available on the primary side. The purpose is to achieve opto-less constant-current regulation in isolated offline drivers of LED lamps for bulb replacement where a power factor >; 0.9 is required.
Keywords :
LED lamps; constant current sources; power convertors; power factor correction; LED lamps; bulb replacement; constant dc output current; constant-current regulation; dc output current regulation; high-power-factor flyback converters; isolated offline drivers; primary control; primary side; Demagnetization; Reactive power; Resistors; Switches; Topology; Voltage control; Converter control; Lighting; Power factor correction;
Conference_Titel :
Power Electronics and Applications (EPE 2011), Proceedings of the 2011-14th European Conference on
Conference_Location :
Birmingham
Print_ISBN :
978-1-61284-167-0
Electronic_ISBN :
978-90-75815-15-3
