资源描述：
《Physics-Based_Model_SiC_JFET_USC_2009》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、APhysics-BasedModelforaSiCJFETAccountingforElectric-Field-DependentMobilityE.Platania§,Z.Chen,F.Chimento§,A.Grekov,R.Fu,L.Lu,A.Raciti§,J.Hudgins*,A.Mantooth†,D.Sheridan‡,J.Casady‡,E.SantiUniversityofSouthCarolina,DIEES-ARIELUniversityofCatania§,UniversityofNebraska*,UniversityofArkansas†,SemiSouthL
2、aboratories,Inc.‡Abstract—InthisworkaphysicalmodelforaSiCJunctionField·a~2Xhighersaturationvelocity.EffectTransistor(JFET)ispresented.ThenovelfeatureofthemodelisthatthemobilitydependenceonbothtemperatureandAhighbreakdownelectricfieldallowsthedesignofSiCelectricfieldistakenintoaccount.Thisisparticul
3、arlyimportantpowerdeviceswiththinnerandhigher-dopedvoltage-blockingforhigh-currentpowerdevices,wherethemaximumconductionregionsand,asaconsequence,aloweron-stateresistanceforacurrentislimitedbydriftvelocitysaturationinthechannel.Thegivenbreakdownvoltageisachievable.Thelargebandgapofmodelequationsare
4、describedindetail,emphasizingtheSiCresultsinlowerleakagecurrentsthansilicon,inamuchdifferencesintroducedbythefield-dependentmobilitymodel.higheroperatingtemperatureandhigherradiationhardness.ThemodelisthenimplementedinPspice.BothstaticandThehighthermalconductivityallowsdissipatedheattobedynamicsimu
5、lationresultsaregiven.Theresultsarevalidatedmorequicklyextractedfromthedeviceavoidingtheneedtowithexperimentalresultsunderstaticconditionsandunderhavebulkyandexpensivecoolingsystemsinmostresistiveandinductiveswitchingconditions.applications.This,inturn,translatesintohighcostsavingsinmasscriticalapp
6、lications.Finally,thesaturatedelectronKeywords-SiliconCarbide,JFET,physicsbasedmodel,field-velocityofSiC,whichdeterminesthemaximumcurrentdependentmobility.densityofthedevice,istwicethatofSilicon.I.INTRODUCTIONAlthoughSiCpresentsallofthesebenefits,itscommercialSiliconcarbide(SiC)wasconsideredmorepro
7、misingthanimpacthasbeenseverelylimitedbythefollowingfactors[1]:silicon(Si)duringtheearlydaysofsemiconductortechnology·lackofavailabilityofhighqualitySiCwafersand[1-3].Butbythe1960s,theCzochralskitechniquefo
