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Browse Conference Publications > Industrial Electronics, 2006 ... Help

Design and Analysis of a Piezoelectric Transformer-Based Half-Bridge Resonant Inverter for CCFL Backlight Modules

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3 Author(s)
Yu-Kang Lo ; Dept. of Electron. Eng., NTUST, Taipei ; Chang-Hua Lin ; Kai-Jun Pai

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

Published in:
Industrial Electronics, 2006 IEEE International Symposium on  (Volume:2 )

Date of Conference: 9-13 July 2006

Page(s):
892 - 896
E-ISBN :
1-4244-0497-5
Print ISBN:
1-4244-0496-7
INSPEC Accession Number:
9132018
Conference Location :
Montreal, Que.
Digital Object Identifier :
10.1109/ISIE.2006.295753
Product Type:
Conference Publications

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