LED Backlight를 위한 다채널 전류평형 단일스위치 LED 구동회로

황상수; 한상규

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황상수 (삼성전기)
한상규 (국민대)

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이 논문의 연구 히스토리 (2)

2016

LED Backlight를 위한 다채널 전류평형 단일스위치 LED 구동회로

황상수 , 한상규 전력전자학회논문지 2016.08 학술저널

2014

3D TV를 위한 다채널 전류평형 단일스위치 LED 구동회로

황상수 , 류동균 , 최흥균 외 2명 전력전자학회 학술대회 논문집 2014.07 학술대회자료

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We propose a multi-channel current-balancing single switch light-emitting diode (LED) driver for a 3D TV. Conventional LED drivers require non-isolated DC/DC converters as many as the number of LED channels, whereas the proposed LED driver needs only one power switch and several balancing capacitors instead of expensive non-isolated DC/DC converters. Therefore, the proposed driver features a simple structure with low cost and high efficiency. In particular, because its power switch can be turned off under the zero-current switching condition, the proposed driver has desirable advantages, such as improved electromagnetic interference characteristics and high efficiency. Moreover, it only uses a small number of DC blocking capacitors with no additional active devices for the current balancing of multi-channel LEDs. Therefore, the proposed driver exhibits high reliability and cost effectiveness. To confirm the validity of the proposed driver, we perform a theoretical analysis and present design considerations and experimental results obtained from a prototype that is applicable to a 46” LED TV.

#Multi-channel LED driver #Current balancing