如何正确读懂英飞凌的IGBT.pdf

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1、InfineondatasheetunderstandingIFXAIMZhouYizhengInfineondatasheetunderstandingCurrentparametersCurrentparametersVoltageparametersVoltageparametersSwitchingparametersSwitchingparametersDiodeparametersDiodeparametersThermalparametersThermalparametersModuleparametersModuleparameters

2、ForinternaluseonlyPage2Currentparameters!Nominalcurrent(I)CnomSpecifiedasdatacode:FF450R17ME3Nominalcurrentisspecifiedat80℃,25℃valueisalsogivenasreferenceT=T−(V@T*I*R)cjmaxcesat,maxjmaxCnomthjcCalculatedvaluewillbehigherthandatasheetvalue,allnominalcurrentistakenasintegerThisval

3、uejustrepresentsIGBTDCbehavior,canbeareferenceofForinternaluseonlychoosingIGBT,butnotyardstick.Page3Currentparameters!Pulsecurrent(II)CRMRBSOAIisdefinedasrepetitiveturnonpulsecurrentCRMIisdefinedasmaximumturnoffcurrentRBSOAIRBSOAICRMIVVCCEGE1msisjusttestcondition,realpulsewidthi

4、sdependonthermalForinternaluseonlyPage4Currentparameters!Shortcircuitcurrent(I)SCVCEVCEICICVGEVGEIscIShortbeforeSwitchOnIscIIShortafterSwitchOnTheshortcircuitcurrentvalueisatypicalvalue.Inapplications,theshortcircuittimeshouldnotexceed10us.ForinternaluseonlyPage5Currentparameter

5、s!Shortcircuitcondition:VGE¬V:gatevoltage(15V)GEISC¬V:DCbusvoltageCC¬T:shortcircuitstarttemperaturetvjSCInfineontestshortcircuitatmaximumoperationTForinternaluseonlyjPage6Voltageparameters!Blockingvoltage(V)CESVspecifiedatT=25℃.HigherT,higherblockingvoltageCESjjChiplevelModulele

6、velDuetostrayinductanceinsidemodule∆V=di/dt*LδViseasiesttobeexceedduringCESRBSOAturnoff,duetoexternalandinternalstrayinductanceVcannotbeviolatedatanycondition,otherwiseIGBTwouldCESForinternaluseonlybreakthoughPage7Voltageparameters!Saturationvoltage(V)CEsatVisspecifiedatnominalc

7、urrent,bothT=25℃and125℃aregivenCEsatjInfineonIGBTareallpositivetemperaturecoefficientGoodforparallelingVvalueistotallyatchipCEsatlevel,excludingleadresistanceForinternaluseonlyPage8VoltageparametersVincreasewithIincreasingCEsatCVincreasewithVdecreasingCEsatGEVisnotrecommendedtou

8、setoosmall,ThisincreasesIGBTbothGEForinternalus