dynamic analysis of charge pump

dynamic analysis of charge pump

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时间:2019-07-31

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1、IEEEJOURNALOFSOLID-STATECIRCUITS,VOL.32,NO.8,AUGUST19971231ADynamicAnalysisoftheDicksonChargePumpCircuitToruTanzawaandTomoharuTanakaAbstractÐDynamicsoftheDicksonchargepumpcircuithaveinsteadystateisderivedasafunctionoftheoutputvoltage.beenanalyzed.Thea

2、nalyticalresultsenabletheestimationoftheNext,thetotalchargeconsumedbythechargepumpduringrisetimeoftheoutputvoltageandthatofthepowerconsumptionboostingisobtainedbytwodifferentmethods;byusingtheduringboosting.Byusingthisanalysis,theoptimumnumberchargest

3、oredineachcapacitorandbyusingthesumofofstagestominimizetherisetimehasbeenestimatedas1.4Nmin,whereNministheminimumvalueofthenumberofstagesthechargeconsumedbythechargepumpinonecycletime.necessaryforagivenparametersetofasupplyvoltage,thresholdThen,combin

4、ingthesetotalchargeestimationsderivedbythevoltagesoftransferdiodes,andaboostedvoltage.Moreover,twomethods,arecurrenceformulafortheoutputvoltageistheself-loadcapacitanceofthechargepump,whichshouldbederived.Asaresult,therisetimeandcurrentconsumptionchar

5、gedupatthesametimeastheoutputloadcapacitanceofachargepumpwithanarbitrarynumberofstagescanbeofthechargepump,hasbeenestimatedasaboutone-thirdofthetotalchargepumpcapacitance.Asaresult,theequivalentcalculatedfromtheinitialcondition.Theloadcapacitanceofcir

6、cuitofthechargepumphasbeenmodified.Theanalyticalthechargepumpitselfisestimatedandtheequivalentcircuitresultshavebeeningoodagreementwiththesimulationresultsofthechargepumpismodified.InSectionIII,theaccuraterisebytheiterationmethod,typicallywithin10%forth

7、erisetimetimeandcurrentconsumptionarecomputedbytheiterationandwithin2%forthepowerconsumption.Incaseofachargemethod.InSectionIV,inordertoverifythedynamicanalysis,pumpwithMOStransfertransistors,theanalyticalresultoftherisetimehasagreedwiththeSPICEsimula

8、tionwithin10%.itsresultsarecomparedwiththeiterationmethodandtheSPICEsimulation.InSectionV,itisshownthatthereareaIndexTermsÐChargepumpcircuit,equivalentcircuit,opti-numberofstagestominimizetherisetimeundertheconditionmumnumberofstages,powercons

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