低功耗无片外电容LDO集成电路的分析与设计

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1、AbstractAbstractPowerisanindispensablepartofanyequipmentsandsystems.Andpowermanagementisimportantforportableelectronicdevicesinordertoenhancethesystemqualityandincreasethebatteryruntime.Low-Dropoutregulators(LDO)arewidelyusedeitheraloneinmanyintegrat

2、edpowermanagementcircuits,whiletheycanprovidewidebandandreliableregulatedlownoisesupplyvoltagefornoise-sensitiveanalogandRFloads.MostofconventionalLDOsusealargecapacitor,whichcannotbeimplementedonchip.Therefore,output-capacitorlessLDOsareneededforSoC

3、applications.Inordertoextendthesystemruntime,thelowpowerconsumptionhasbeenanimportantaimofscientificresearchers.Solowpowerconsumptionofoutput-capacitorlessLDObecomeoneofthehotspotofcurrentresearch.Inthispaper,thedevelopmentofthefuture,thebasicstructu

4、reandperformanceparametersareintroducedfirstly.Then,variousfactorswhichinfluencethestabilityoftransientresponse,andcomparetheOCL-LDOfindtheoptimalmethodofOCL-LDOareanalyzed.Whileaninstantaneouscurrent-boostingvoltagebufferisinsertedtoimprovethetransi

5、entresponses.ThestabilityandtransientresponsesoftheLDOregulatorarepresented,andithasbeenimplementedandfabricatedinSMIC0.18-mCMOSprocess.Themeasuredresultsshownthattheoutputvoltagecanbestableat1.8Vwhenitssupplyvoltagerangedfrom1.9Vto3.2V,thedropoutvo

6、ltageisjust35mV,andthequiescentcurrentisonly1.4A.Keywords:low-dropoutregulator;Output-capacitorlessLDO;UltralowpowerII万方数据目录目录摘要.........................................................................................................................

7、...........IAbstract...............................................................................................................................II第一章绪论................................................................................................

8、.........................1§1.1研究背景及意义.................................................................................................1§1.2国内外研究现状及发展方向.............................................................................2§1.3本文主要工作及内容安排......