發(fā)布時(shí)間：2018-06-16 04:18

  本文選題：電致發(fā)光片 + 驅(qū)動(dòng)電路�。� 參考：《電子科技大學(xué)》2014年碩士論文

【摘要】：電致發(fā)光片是一種冷光源,具有驅(qū)動(dòng)電壓高、電流小、功耗小等特點(diǎn)。近年來,能源危機(jī)成為廣泛關(guān)注的焦點(diǎn),節(jié)能減排也成為新世紀(jì)的重要口號(hào),世界各國都大力發(fā)展節(jié)能設(shè)備。作為新一代的照明顯示設(shè)備,電致發(fā)光片的應(yīng)用受到越來越多的關(guān)注,電致發(fā)光片驅(qū)動(dòng)電路的設(shè)計(jì)也成為電力電子領(lǐng)域內(nèi)的重要課題。本課題來源于國家重大科技02專項(xiàng),流片采用電子科大與上華公司合作開發(fā)的BCD工藝平臺(tái),成功開發(fā)出一款用于驅(qū)動(dòng)電致發(fā)光片的芯片。傳統(tǒng)的電致發(fā)光片驅(qū)動(dòng)電路采用變壓器以及一些分立器件構(gòu)成,因此導(dǎo)致它占用體積過大,重量比較重,成本較高,本文設(shè)計(jì)的電致發(fā)光片驅(qū)動(dòng)電路采用集成電路的設(shè)計(jì)方法,將大部分外圍器件集成在芯片內(nèi)部,因此應(yīng)用電路的面積較小,成本也比較低。該驅(qū)動(dòng)芯片的參數(shù)和指標(biāo)包括:穩(wěn)定輸出電壓100V以上;輸出頻率可調(diào);工作電壓范圍3~5V;雙端輸出信號(hào)可直接驅(qū)動(dòng)電致發(fā)光片。本文設(shè)計(jì)的電致發(fā)光片驅(qū)動(dòng)電路,采用Boost升壓電路獲得100V以上的直流高電壓,采用H橋電路將直流電壓轉(zhuǎn)換為交流方波。整體電路共有六個(gè)模塊,即Boost升壓電路、基準(zhǔn)電流源電路、振蕩器電路、使能電路、H橋邏輯控制電路、H橋模塊,對(duì)于這六個(gè)模塊,本文作者全部都通過仿真軟件進(jìn)行設(shè)計(jì)驗(yàn)證。目前各個(gè)子電路和整體電路均通過驗(yàn)證,功能全部符和設(shè)計(jì)要求。本文的芯片在版圖設(shè)計(jì)中,將高壓模塊和低壓模塊分開隔離布局,高壓管的耐壓值在100V以上,本文通過一種LDMOS來實(shí)現(xiàn),并在無錫華潤上華公司完成流片。作者及其團(tuán)隊(duì)已經(jīng)完成所有模塊的測試工作,又設(shè)計(jì)了芯片的應(yīng)用系統(tǒng)電路,完成芯片應(yīng)用系統(tǒng)的測試工作。通過結(jié)果可以看出,芯片功能正常,所有參數(shù)都符合設(shè)計(jì)指標(biāo)。目前芯片已經(jīng)通過中國測試研究院的第三方驗(yàn)證,本論文中的所有數(shù)據(jù)均通過第三方認(rèn)證。
[Abstract]:Electroluminescent chip is a cold light source with high driving voltage, low current and low power consumption. In recent years, energy crisis has become the focus of attention, energy saving and emission reduction has become an important slogan in the new century. As a new generation of lighting display devices, the application of electroluminescent devices has attracted more and more attention. The design of electroluminescent device driving circuit has become an important subject in the field of power electronics. This topic comes from the national important science and technology 02 special project, the stream piece uses the BCD craft platform which the electronic science and technology university and the Shanghai China company develops, successfully develops a chip which is used to drive the electroluminescent chip. The traditional electroluminescent chip drive circuit is composed of transformer and some discrete devices, so it takes up too much volume, heavy weight and high cost. The driving circuit of electroluminescent chip designed in this paper adopts the design method of integrated circuit. Most of the peripheral devices are integrated inside the chip, so the area of the application circuit is smaller and the cost is lower. The parameters and specifications of the drive chip include: stable output voltage above 100V, adjustable output frequency, operating voltage range of 3V / 5V, and double end output signal can directly drive the electroluminescent chip. In this paper, the drive circuit of electroluminescent chip is designed. The boost circuit is used to obtain the high DC voltage over 100V, and the H-bridge circuit is used to convert the DC voltage to AC square wave. The whole circuit has six modules, namely boost circuit, reference current source circuit, oscillator circuit, enable circuit and H-bridge logic control circuit. For these six modules, the author of this paper designs and verifies them by simulation software. At present, each sub-circuit and the whole circuit have passed the verification, the function all characters and the design request. In the layout design of the chip, the high voltage module and the low voltage module are separated and the voltage value of the high voltage tube is more than 100 V. in this paper, a kind of LDMOS is used to realize the chip, and the flow sheet is completed in Wuxi China Resources Shanghua Company. The author and his team have completed the testing of all modules, and designed the application system circuit of the chip to complete the testing work of the chip application system. The results show that the chip function is normal, all parameters are in line with the design index. At present, the chip has been verified by the third party of the China Institute of testing, and all the data in this paper are certified by the third party.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM923.01

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