高精度程控電源的研制.pdf

1、合肥工業(yè)大學碩士學位論文高精度程控電源的研制姓名：蘇艷菊申請學位級別：碩士專業(yè)：測試計量技術(shù)及儀器指導(dǎo)教師：張輝20080601ResearchOilHighPrecisionandProgrammablePowerSupplyABSTRACTThisdissertationintroducestheresearchofhighprecisionandprogrammablepowersupplybasedontheAv灸MCU，Whi

2、chnotonlyaimsattherequirementofpowersupplyusedininstruments，butalsoobservesthedesignprinciplesofgreenpowersupply，inwhichenergysavingandenvironmentprotectionisrequiredTheoutputisO～60V／0“12A，whenitworksattheconstantvoltage

3、modeandisconstantcurrentmoderespectivelyTherippleislessthan5mVThemeritanddemeritofswitchingpowersupplyandlinearpowersupplyiscomparedinthisdissertationOnthisbase，Thecombinedtypevoltage—stabilizingschemeisbroughtforward。It

4、maintainsthedifferentialvoltageofadjustingtransistorinvariable。Sothewasteoftransistoritselfisreduced，theperformancerequirementoftransistorlowered，theconversionefficiencyofpowersupplyisalsoadvancedatthesametime。Thetechnol

5、ogiesofEMIfiltrate，APFC，combinedtypevoltagestabilizingschemeandthirdclassactivefilternetworkareadoptedinthepartofpowercircuitEMIfiltratetechnologyisadopttoleachesthehighfrequencynoisecamefromelectricnetworkActivepowerfac

6、torcorrectiontechnologyisadoptedtoimprovethepowerfactorItmakesaberrantinputcurrenttagstheinputvoltageclosetoidealsinewaveThe，aberrationisresultedbytheexistenceofinputleadingloadThedisturbertowardstheelectromagneticenviro

7、nmentaroundisreducedatthemeantimeThecombinedtypevoltage—stabilizingschemeisadoptedteducethewasteoftransistoritselfandadvancetheconversionefficiencyofpowersupplySecondclassactivefilternetworkisadoptedtoleachestherippleofo

8、utputvoltagefurtherThespecialEDAdesignsoftwareofpowersupply—saberisadoptedtosimulateeachcircuitmoduleofpowerpart。ThisdesignsoftwareisproductbyAmericaSynopsyscorporation，powerfunctionispossessedThissystemisalsoverifiedbyt