Design and implementation of a digitalized power supply for large scale LCD TV

Wei Hsin Liao*, Yi Hwa Liu, Shun Chung Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The main purpose of this paper is to research and implement a digitalized power supply for large scale liquid crystal display (LCD) TV. The whole system configuration can be divided into three major parts. An interleaved continuous conduction mode (CCM) power factor corrector (PFC) in front stage is employed as pre-regulator for improving the input power factor and reducing the total harmonic distortion. A half-bridge LLC resonant converter with zero voltage switching (ZVS) capability is utilized as the DC/DC conversion stage. Finally, the dsPIC30F2020 from Microchip corp. is used as the digital variable frequency controller of LLC series resonant converter. The advantages of the digital controller include components cost reduction and more flexible design. Digital power stage also provides intelligent adaptability and flexibility to satisfy any complex power requirement with the straightforward ability to monitor, process and adapt to system conditions. Experimental results will be given to validate the correctness of the proposed system and the measured efficiency of the whole system achieved 82%.

Original languageEnglish
Title of host publicationProceedings - INDIN 2010
Subtitle of host publication8th IEEE International Conference on Industrial Informatics
Pages786-791
Number of pages6
DOIs
StatePublished - 2010
Externally publishedYes
Event8th IEEE International Conference on Industrial Informatics, INDIN 2010 - Osaka, Japan
Duration: 13 07 201016 07 2010

Publication series

NameIEEE International Conference on Industrial Informatics (INDIN)
ISSN (Print)1935-4576

Conference

Conference8th IEEE International Conference on Industrial Informatics, INDIN 2010
Country/TerritoryJapan
CityOsaka
Period13/07/1016/07/10

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