The Research on the Application of the Piezoelectric Transformer in Cold-Cathode Fluorescent Lamp Driver

HUANG Yi-hua; YANG Zhi; CHEN Zhi-rui; SONG Jun-jiang

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The Research on the Application of the Piezoelectric Transformer in Cold-Cathode Fluorescent Lamp Driver

更新时间：2025-07-16

- The Research on the Application of the Piezoelectric Transformer in Cold-Cathode Fluorescent Lamp Driver
- Acta Electronica Sinica Vol. 34, Issue 5, Pages: 800-803(2006)
- 作者机构：
  
  中山大学电子与通信工程系,广东,广州,510275
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN722.1
- Published：2006
- 稿件说明：
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HUANG Yi-hua, YANG Zhi, CHEN Zhi-rui, et al. The Research on the Application of the Piezoelectric Transformer in Cold-Cathode Fluorescent Lamp Driver[J]. Acta Electronica Sinica, 2006, 34(5): 800-803.
DOI：

HUANG Yi-hua, YANG Zhi, CHEN Zhi-rui, et al. The Research on the Application of the Piezoelectric Transformer in Cold-Cathode Fluorescent Lamp Driver[J]. Acta Electronica Sinica, 2006, 34(5): 800-803. DOI：

摘要

电磁式变压器用于冷阴极管驱动器时易被击穿

电磁干扰严重

功率损耗较大

难以使驱动器实现平面化和轻量化.利用压电变压器替代电磁式变压器

并合理选择及设计半桥型逆变器作为压电变压器的输入级、

电路作为输出级电路

并采用频率跟踪技术控制压电变压器的工作频率

则可以使冷阴极管驱动器的整体性能得到大幅提高.

Abstract

When the electro-magnetic transformer is used in the cold cathode fluorescent lamp (CCFL)driver

the transformer is very easy to be broken

the EMI and the power lose is very serious

and the weight and volume is hard to be minimized.If the electro-magnetic transformer is replaced with the piezoelectric transformer (PT)in the CCFL driver

and using the Half-Bridge inverter as the input stage using

the LC circuit as the output stage of the PT

and to trace the frequency of the PT

the performance of the CCFL driver can be improved.

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