LED驅(qū)動(dòng)電源的設(shè)計(jì)畢業(yè)論文.doc

本科畢業(yè)論文（設(shè)計(jì)）論文題目：LED驅(qū)動(dòng)電源的設(shè)計(jì)學(xué)生姓名：所在院系：所學(xué)專業(yè)：應(yīng)用電子技術(shù)教育指導(dǎo)老師：完成時(shí)間：LED驅(qū)動(dòng)電源的設(shè)計(jì)摘要對(duì)于一般照明而言，人們更需要白色的光源。作為一種新型的光源，LED具有無污染、長(zhǎng)壽命、耐震動(dòng)和抗沖擊的鮮明特點(diǎn)。雖然白光LED的發(fā)光效率正在逐步提高，但是與LED燈配套的驅(qū)動(dòng)器性能不佳，故障率高，成了LED推廣應(yīng)用的瓶頸。本文介紹了一種照明用LED高效驅(qū)動(dòng)電源的設(shè)計(jì)方法。本設(shè)計(jì)的紅、綠、藍(lán)三色各自采用單獨(dú)的驅(qū)動(dòng)電路，通過脈寬調(diào)制方式來調(diào)節(jié)LED燈的亮度，便于實(shí)現(xiàn)顏色的多樣化；采用開關(guān)電源供電方式，輸入電壓范圍廣、抗干擾性好、驅(qū)動(dòng)效率高，保證了該驅(qū)動(dòng)板在不同場(chǎng)合、不同區(qū)域內(nèi)都能正常使用。關(guān)鍵詞：LED，電源，驅(qū)動(dòng)ThedesignofLEDdrivespowerABSTRACTForgenerallighting,peopleneedmorewhitelightsources.Asanewlightsource,LEDwithpollution-free,long-life,vibrationandshockresistanttothedistinctcharacteristics.Atpresent,theluminousefficiencywhiteLEDisgraduallyimproving,thecommercializationofthedevicehasreachedtheleveloftheincandescentlamp,butthefactshouldnotbeoverlookedthattheLEDlightsandsupportingthedriverdidnotkeepupwithatimelymanner,thedrivecircuitpoorperformance,faultRateishighandpromotetheuseofLEDbecomethebottleneck,therearemanytechnicalissuesneedtostudyandsolve.ThispaperintroducesahighlyefficientlightingwithLEDdrivethepower.Red,greenandbluecolourofthedesignuseseparatedrivecircuitrespectively,throughthePWMmodetoadjustthebrightnessLEDlightstofacilitaterealizationofthediversityofcolorsusedtoswitchpowersupply,inputvoltagerangewidely,anti-Interferenceofthegood,high-efficiencydrivetoensurethatthedriveplateondifferentoccasionsindifferentregions,isnormallyavailable.KeyWords：LED，Power，Driver目錄1緒論.11.1課題研究的背景.11.2課題研究的方案.12系統(tǒng)硬件電路設(shè)計(jì).22.1系統(tǒng)框圖及工作原理簡(jiǎn)介.22.2系統(tǒng)所用主要芯片介紹.32.2.1PIC16F684功能介紹.32.2.2L6562D功能介紹.92.2.3HV9922功能介紹.102.3系統(tǒng)硬件電路設(shè)計(jì).112.3.1AC-DC變換電路.112.3.2DC-DC變換電路.122.3.3微控制器及外圍電路.122.3.4四路驅(qū)動(dòng)電路.142.3.5輸出過流保護(hù)電路.