Stable Boost Circuit of Electroluminescent Lamp Driver

TANG Li-fang; LI Li; YANG Yu-jun; FANG Jian; ZHANG Bo

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Stable Boost Circuit of Electroluminescent Lamp Driver

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- Stable Boost Circuit of Electroluminescent Lamp Driver
- Chinese Journal of Liquid Crystals and Displays Vol. 27, Issue 5, Pages: 666-670(2012)
- 作者机构：
  
  电子科技大学集成电路设计中心, 四川成都 610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN43
- Received：06 June 2012，
  
  Revised：10 July 2012，
  
  Published：15 October 2012
- 稿件说明：
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唐莉芳, 黎俐, 杨毓俊, 方健, 张波. 用于场致发光灯稳定驱动的Boost电路[J]. 液晶与显示, 2012,(5): 666-670

TANG Li-fang, LI Li, YANG Yu-jun, FANG Jian, ZHANG Bo. Stable Boost Circuit of Electroluminescent Lamp Driver[J]. , 2012,(5): 666-670
唐莉芳, 黎俐, 杨毓俊, 方健, 张波. 用于场致发光灯稳定驱动的Boost电路[J]. 液晶与显示, 2012,(5): 666-670 DOI：

TANG Li-fang, LI Li, YANG Yu-jun, FANG Jian, ZHANG Bo. Stable Boost Circuit of Electroluminescent Lamp Driver[J]. , 2012,(5): 666-670 DOI：

摘要

稳定性是开关电源设计的技术指标之一。电压拓扑中影响稳定性的因素主要由误差放大器引入

电流拓扑相对于电压拓扑虽有不少改进

但也给电路稳定性带来了新的影响因素

特别是次谐波振荡问题。为使输出电压稳定

满足EL灯的使用要求

文中提出了一种稳定的用于EL灯驱动的Boost电路

该设计用带使能控制的电流比较器代替误差放大器

提高了电路的稳定性。文中详细分析了电路的工作过程

给出了电路的仿真结果。该电路响应时间为60

基准电流源为4.3

负载调整率为6%

电路稳定输出范围70~100 V

适用于19.4 cm

~38.7 cm

(3 in

~6 in

)的EL灯。该电路结构简单、稳定性好、响应快、功耗低、易于集成。

Abstract

Stability is an index to measure the quality of Switching Power Supply.The main factor that influences the stability of voltage-mode is caused by error amplifier. Compared to voltage-mode

current-mode improves a lot but introduces new factors

especially the sub-harmonic oscillation. This paper designed a Boost circuit which can insure the stability of output voltage and meet the requirements of EL lamp. A current comparator with enable signal is used in this paper to instead of error amplifier.Specific analysis and simulation results of the circuit are available in this paper. The circuit can achieve a response time about 25

a reference current source about 4.3

a load regulation rate about 6%

an output voltage from 70 V to 100 V

and this circuit can be applied to 19.4 cm

~38.7 cm

(3 in

~6 in

) EL Lamp. Above all

the circuit can act quickly

operate stably and be integrated conveniently.

关键词

Keywords

references

郑喜凤,朴燕,刘维亚.电致发光显示屏原理、结构及驱动电路 [J]. 液晶与显示, 2000,15(2):114-115.

陈佳果,徐德鸿.影响开关电源稳定性的若干因素 [J]. 电源世界, 2008,(7):21-24.

王创社,乐开端,谭玉山,等.开关电源两种控制模式的分析与比较 [J]. 电力电子技术,1998,(3): 78-19.

Guo Y N,Cheng W B,Kang S M,et al.Stability criterion and parameter perturbation chaos control in boost circuit //2009 4th IEEE Conference on Industrial Electronics and Application, Xi'an, China: IEEE Conference Publications,2009:2886-2890.

Hiran Y.A MOS current-mode boost DC-DC converter with the cuty-ratio-independent frequency characteristics //IEEE Asian Solid-State Circuits Conference, Jeju: IEEE Conference Publicootions, 2011:46-52.

黄林秀,欧雪春,周泽坤,等.一种新型高精度斜坡补偿电路 [J]. 微电子学, 2011,41(3):393-396.

Bryan K,由一.开关电源中的电流模式控制 [J]. 电源技术应用, 2010,13(3):55-56.

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胡嗣云.EL的特性及驱动电路研究 [J]. 国外电子元器件,2003,(5):27-28.

Buti B, Nagy I, Ohsaki H, et al.Novel approach in stability analysis presented in controlled boost converter //Power Conversion Conference, Nagoya:IEEE Conference Publications,2007:581-587.

Roberto G,Josep F,Luis M,et al.Self-oscillating boost converter with output filter for Ideal load regulation //1996 IEEE International Symposium on Circuits and Systems, Spain:IEEE Conference Publication, 1996:529-532.

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