SWITCHING POWER SUPPLY DEVICE AND CONTROL DEVICE THEREOF

The present invention discloses a switching power supply device which can accurately regulate an average current of an LED into a target average current, and a control method thereof. The switching power supply device includes: a switch for regulating LED currents; and a control unit varying a refer...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	LIM, BAEK MIN, KIM, JU YEONG, KWON, OK HWAN, MOK, JIN WON, KIM, JI HWAN
Format:	Patent
Sprache:	eng ; kor
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The present invention discloses a switching power supply device which can accurately regulate an average current of an LED into a target average current, and a control method thereof. The switching power supply device includes: a switch for regulating LED currents; and a control unit varying a reference voltage used to turn on and off the switch by using a drain source voltage of the switch, a monitoring voltage corresponding to the LED currents, and a target voltage corresponding to the target average current, and controlling the switch by using the reference voltage. 본 발명은 엘이디의 평균전류를 목표한 평균전류로 정확히 레귤레이션할 수 있는 스위칭 전원 장치 및 그 제어 장치를 개시한다. 상기 스위칭 전원 장치는, 엘이디 전류를 레귤레이션하기 위한 스위치; 및 상기 스위치의 드레인 소스 전압, 상기 엘이디 전류에 대응하는 모니터링 전압 및 목표한 평균전류에 대응하는 목표전압을 이용하여 상기 스위치의 턴오프에 이용되는 기준전압을 가변하고, 상기 기준전압을 이용하여 상기 스위치를 제어하는 제어부;를 포함한다.