應(yīng)用于降壓型開關(guān)電源的LDO設(shè)計(jì)與研究.pdf

1、西安電子科技大學(xué)碩士學(xué)位論文應(yīng)用于降壓型開關(guān)電源的LDO設(shè)計(jì)與研究姓名：賈寧波申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：軟件工程（微電子）指導(dǎo)教師：楊銀堂徐駿華20100101AbstractAbstractWiththerapiddevelopmentofmobilecommunicationtechnologylowpowerhighefficiencypowermanagementtechnologybecomeaninevitabletrendT

2、hepaperpresentsanewpowermanagementsolutionthatcombineaLDOlinearregulator、析t11abuckDCDCconvertor，thissolutionmakestheuseoflownoise，highstabilityLDOoutputtoprovidinghighqualitypowerforbuckDCDCconvertorWithcombinationofthea

3、bovedesignrequirements，thispaperpresentsasuitablestmctureofaLDOregulatorforswitchingpowersupplyThisstructureusestheLDOoutputtodrivethereferencesource，reducesystemnoiseandpowerconsumptionThroughsystematicanalysisofLDO，the

4、loopwillbemorestableafteradoptingappropriatecompensatorymeasuresInaccordancewithprogramneeds，thisstructuredesignsaoutputstagewhichhavetwokindsofswitchingstageTheoutputcallsupplythepowerfortheinternalcircuits，andalsoCandi

5、rectlydrivetheexternalloadsInadditionthestructureincreaseafunctionalcircuitincludingthecomparatorandlogiccontrolmodulestoensurethereferencesourceworkingperfectlyThispaperusestheBiCMOSmanufacturingprocesswhichcontainshigh

6、speedbipolardevicesandMOSdevice，thisprocessCanmakethecircuitbetterrealizedUsingthesoftwareofHspicetosimulationtheLDOsystemtheresultshowsthatthesystemCanworkperfectlytheperformanceofeachsub—modulecircuitcanmeetthedesignre

7、quirementsTherangeoftheLDOinputvoltageis3“5Vandoperatingtemperaturerangeis25125。CIntheconditionoftheinputvoltage25Vandtemperature25“C，theLDOoutputvoltageis2Bythemaximumoutputcurrentis180mA，andthedropoutvoltageis200mVThis