Design and analysis of a piezoelectric transformer-based half-bridge resonant inverter for CCFL backlight modules

Yu Kang Lo*, Chang Hua Lin, Kai Jun Pai

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

A half-bridge (HB) resonant inverter for driving a cold cathode fluorescent lamp (CCFL) backlight module with a piezoelectric transformer (PT) is analyzed in this paper. The resonant inductance of the HB inverter is expressed as a function of the load current, the load resistance the PT circuit parameters. Also, the trans-admittance of the PT-CCFL combination network is measured to track the resonant frequency of the PT which may be varied due to the temperature rise. The efficiency of the HB resonant inverter, the output power of the PT and the CCFL driving current are thus remained almost constant. Experiments show that the observed results match the theoretical analyses.

Original languageEnglish
Title of host publicationInternational Symposium on Industrial Electronics 2006, ISIE 2006
Pages892-896
Number of pages5
DOIs
Publication statusPublished - 2006
EventInternational Symposium on Industrial Electronics 2006, ISIE 2006 - Montreal, QC, Canada
Duration: 2006 Jul 92006 Jul 13

Publication series

NameIEEE International Symposium on Industrial Electronics
Volume2

Conference

ConferenceInternational Symposium on Industrial Electronics 2006, ISIE 2006
Country/TerritoryCanada
CityMontreal, QC
Period2006/07/092006/07/13

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering

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