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전해 커패시터를 제거하고 디밍이 가능한 고수명 단일단 PFC DCM 플라이백 컨버터
진달래(Dal-Rae Jin),김춘택(Choon-Taek Kim),채민철(Min-Cheol Chae),나재두(Jae-Du La),김영석(Young-Seok Kim) 대한전기학회 2013 전기학회논문지 Vol.62 No.11
Light emitting diode(LED) lighting has been applied various industry fields because of its high efficiency, low power consumption, long life time, and environment friendly characteristics. Generally, LED lighting needs a driver to maintain constant current. Most popular driver is the switching converter. In the converter, there are several electrolytic capacitors. However the lifespan of the electrolytic capacitor is much shorter than LED. Therefore the lifespan of LED lighting with electrolytic capacitor is decreased. Also, LED lighting needs dimming control because of various needs and energy saving. This paper presents the dimmable single-stage PFC DCM flyback converter without electrolytic capacitor and parallel LC resonant filter for reducing 120[㎐] ripple on the output. The type 2 controller is used to maintain constant current and the analog dimming control is used. The proposed converter is verified through simulation and experimental works.