【正文】 and high reliability. As the quality of power LED improves and the cost of power LED reduces, its application field has gradually turned from signal lighting and display lighting to general room lighting. Along with the development of power LED, the research of its driving IC has also been greatly accelerated. This article unifies the characteristic of LED and the existing driving circuit39。該驅(qū)動電路配有線性調(diào)光功能，可根據(jù)需要，對外部部件 參數(shù) 進行修改，達到調(diào)光的功能，并可根據(jù)外部電路的變化，驅(qū)動不同功率的路燈，實現(xiàn)了驅(qū)動電路的多功能性，使用簡單、方便。隨著大功率照明 LED 性能的提高及生產(chǎn)成本的降低，其應(yīng)用領(lǐng)域正由屏幕背光源以及一些對亮度要求不高的景觀照明領(lǐng)域向普通白光照明領(lǐng)域擴展。與此同時，與功率型 LED 配套的驅(qū)動集成電路的研發(fā)也由于功率 型 LED 逐漸得到廣泛的應(yīng)用而 迅速的發(fā)展。 目前， 大功率 LED照明技術(shù)日趨成熟， 大功率 LED光源功效已經(jīng)達到100lm/W 以上，這使得城市 路燈 照明節(jié)能改造成為可能。s analytical study, summarizes that uses constant current drive type drive high efficiency LED is the most ideal way. According to the existing data of high efficiency LED Street light39。s multipurpose, the use has been simple and convenient. At present， the high efficiency LED lighting techniques are day by day mature, highpower LED light source has reached the efficacy of 100lm / W or more, which makes energysaving city street lighting possible. LED street lamps, especially highpower LED street lamps, is the rapid speed of the impact of the traditional street market. And relatively highpower LED street lighting applications, as the drive circuit is also mushroomed germination. Keywords High Efficiency LED； Street Light ； Driving Power xx 大學(xué)學(xué)士學(xué)位論文 III 目錄 摘要 …… ....................................................................................................................... I Abstract ........................................................................................................................ II 第 1 章 緒論 ................................................................................................................ 1 課題背景 ........................................................................................................... 1 照明技術(shù)的發(fā)展與 LED 新光源 ..................................................................... 1 照明技術(shù)的發(fā)展 ........................................................................................ 1 半導(dǎo)體照明技術(shù)的發(fā)展 ............................................................................ 2 大功率照明 LED 的主要性能 .................................................................. 3 大功率 LED 照明技術(shù)發(fā)展情況 ..................................................................... 4 國外大功率 LED 照明技術(shù)發(fā)展情況 ...................................................... 4 國內(nèi)大功率 LED 照明技術(shù)發(fā)展情況 ...................................................... 5 大功率 LED 照明發(fā)展趨勢 ...................................................................... 5 論文研究內(nèi)容 ................................................................................................... 7 第 2 章 大功率 LED 光電特性及控制方式 .............................................................. 9 大功率 LED 的特性 ......................................................................................... 9 大功率 LED 伏安特性 .............................................................................. 9 大功率 LED 光電特性 ............................................................................ 10 大功率 LED 色溫與光效特性 ................................................................ 10 大功率 LED 驅(qū)動電源設(shè)計原則 ....................................................................11 基于大功率 LED 特性的設(shè)計原則 .........................................................11 基于電源效率的設(shè)計原則 ...................................................................... 12 大功率 LED 驅(qū)動控制電路的分類 ............................................................... 13 簡單驅(qū)動電路 .......................................................................................... 13 恒壓驅(qū)動電路 .......................................................................................... 14 恒流驅(qū)動電路 .......................................................................................... 15 PWM 調(diào)制驅(qū)動控制電路 ........................................................................ 15 本章小結(jié) ......................................................................................................... 17 第 3 章 控制驅(qū)動芯片的設(shè)計選型 .......................................................................... 18 常用大功率 LED 的恒流驅(qū)動芯片 ............................................................... 18 芯片的選定 ..................................................................................................... 18 單芯片構(gòu)成的驅(qū)動電源 .......................................................................... 18 多芯片構(gòu)成的驅(qū)動電源 .......................................................................... 19 芯片的選擇 .............................................................................................. 19 PT4107 恒流驅(qū)動控制芯片介紹 .................................................................... 19 PT4107 基本性能 ..................................................................................... 20 xx 大學(xué)學(xué)士學(xué)位論文 IV PT4107 管腳配置 ..................................................................................... 20 PT4107 工作參數(shù) ..................................................................................... 21 本章小結(jié) ......................................................................................................... 21 第 4 章 基于 PT4107 大功率 LED 驅(qū)動電源的設(shè)計 ............................................. 22 驅(qū)動電路總體設(shè)計 ......................................................................................... 22 系統(tǒng)構(gòu)成 .................................................................................................. 22 整流模塊 .................................................................................................. 22 驅(qū)動控制模塊 .......................................................................................... 23 簡單并聯(lián)形式驅(qū)動電路 ..................................................................