一種寬輸入范圍的大功率LED驅(qū)動電路的研究與設(shè)計.pdf

1、天津大學(xué)碩士學(xué)位論文一種寬輸入范圍的大功率LED驅(qū)動電路的研究與設(shè)計姓名：李飛申請學(xué)位級別：碩士專業(yè)：微電子學(xué)與固體電子學(xué)指導(dǎo)教師：肖謐201006ABSTRACTHighpowerLEDhaVetheadVantageofthehighlightef詫ctandhighcunentexceptthecommonLEDcharacteriSticsofenergysaVing，10nglifespan，enVironmentalprot

2、ectionandhighreliabili夠1tmakes“GreenLighting”applytoStreetlamp，行咖entlightingandcarlampmorewiderTheincreaseoftheLEDpowerhaVehi曲errequirementforthedriVecurrentofthedriVerchip鋤dthestabilityoftheoutputcurrentAtypeofwideinpu『

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4、zFurthernlore，thechiphassoR—startcircuit，dimmingcircuitandsix夠pessafeguard向nctionsThefirSt，thisthesiselaboratedtheli曲tingcharacterSofh逕hpowerLEDandabroadcurrentresearchsituation，鋤danalysedtlleo巧ofm粕ykindsofDC—DCconverter

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6、histhesisanalyzesinparticularmainsubcircuits，suchasbandgapcircuit，LDegulationcircuit，soR—startcircuitthatmakeuseofDAcontrolmode，dimmingcircuit卸dosccircuitandoperatingfrequencyregulationcircuitWhat’smore，thesimulationresu

7、ltswereshowedafbereVeUsubcircuitThelast，thisthesisshowsandanaIysesthesimuIationresultsandthelayoutdesignofthe、VholechipsystemThewholechipsystemwassimulatedinspectreWheninputVoltagewas8V，outputmaximalcurrcntwas1A，andoutpu