High-performance light emitting diode backlight driving system for large-screen liquid crystal display
SCIE
SCOPUS
- Title
- High-performance light emitting diode backlight driving system for large-screen liquid crystal display
- Authors
- Lee, JJ; Kwon, BH
- Date Issued
- 2007-11
- Publisher
- INST ENGINEERING TECHNOLOGY-IET
- Abstract
- A high-performance light emitting diode backlight driving system is proposed for large-screen liquid crystal display. The proposed system consists of a boost converter for power factor correction (PFC) and an active-clamp converter for dc-dc power conversion. With coupled inductors and simple passive components, the proposed PFC circuit minimises the switching losses by reducing the reverse-recovery current. The active-clamp converter operates under zero-voltage switching for the power switches and its output rectifier is composed of a current doubler and a synchronous rectifier for reducing conduction loss. The proposed backlight driving system is analysed and its design consideration is discussed in detail. Experimental results for a 300 W (3.3 V/90 A) prototype at a constant switching frequency of 100 kHz are presented to verify the analysis and the performance of the proposed system.
- Keywords
- CONVERTER; SNUBBER; DESIGN
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23067
- DOI
- 10.1049/iet-epa:20060509
- ISSN
- 1751-8660
- Article Type
- Article
- Citation
- IET ELECTRIC POWER APPLICATIONS, vol. 1, no. 6, page. 946 - 955, 2007-11
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