二极体测试简介-CARLppt课件

二極體測試簡介,J.F.YANGDATE:MAY/24,Next,1,討論主題,物理特性簡介應用簡介介紹各項參數測試方法,Prev,Next,2,PNJUNCTIONWITHNOEXTERNALBIAS,物理特性-無偏壓,Back,3,PNJUNCTIONWITHREVERSEEXTERNALBIAS,物理特性-逆向偏壓,Back,Prev,4,PNJUNCTIONWITHFORWARDEXTERNALBIAS,物理特性-順向偏壓,Back,Prev,5,應用簡介100VSchottkyApplications,高頻開關式電源供應器Freewheelingdiodes極性保護裝置電池充電器監視器AC/DC轉換器DC/DC轉換器,Back,6,電壓穩定器電壓基準器,應用簡介ZenerDiode,Back,Prev,7,應用簡介TVS,DC電源供應保護器AC電源供應保護器電子線路過電壓保護EMI限制繼電器及接觸器反電動勢保護基本應用線路Go,Back,Prev,8,參數項目(1),RCTESTCLIPCONTACTCHECKSOPD.U.T.OPEN/SHORTPOLARITYIRREVERSELEAKAGECURRENTVFFORWARDVOLTAGEVRREVERSEVOLTAGEDVF熱效應順向電壓差測試,Back,9,參數項目(2),VCCLAMPINGVOLTAGE，TVSPRODUCTTRRRVERSERECOVERYTIMEVFDSKYSURGESURGECURRENTZZT/ZZKDYNAMICIMPEDANCE,Prev,10,RC,測試方法:KelvinContact,I=500maR=V/IPW=4+0.3+4ms,CRA,CRK,Back,11,SOP,測試方法:類似VF測試方法,V3.00V=OpenPW=6.3+0.3+6.3ms,IF=100ma,V,Back,12,IR,逆向漏電流測試,SOP判定後,從陽極加上負電壓少數電子從陰極流向陽極PW=4+IRPW+4ms,+HV,IR,-HV,Back,13,IRCURVE,-V,-I,定電壓測試逆向漏電流,Prev,14,VF,順向電壓測試,PW=4+VFPW+4ms,IF,VF,Back,15,VFCURVE,+I,+V,Prev,16,VR,逆向崩潰電壓測試,從陽極加上負定電流,電流值達到設定值時記錄二極體兩端電壓PW=4+VRPW+4ms,+HV,IZ,-HV,VR,Back,17,VRCURVE,-V,-I,定電流測試逆向崩潰電壓,Prev,18,DVF,熱效應順向電壓差測試,IF大電流,加熱用,10AIM小電流測量VF,10mAPW=4+VFPW+4ms,IF,VF,IM,Back,19,DVFTIMING,IM,IF(Heating),IM,PW:IM=2msIF=75msDVF=/VF1-VF2/,400usReadVF2,1.0msReadVF1,Prev,20,VC,CLAMPINGVOLTAGE,從陽極加上負定電流,電流值達到設定值時記錄二極體兩端電壓PW=4+VCPW+4ms,+HV,IZ,-HV,VR,Back,21,VCCURVE(1)SQUAREWAVE,PW:IP=0.3msVC=VPeak,VCURVE,IPCURVE,Prev,Next,400W,600W,1500W,500W0.55j,0.80j,2.10j,7.00j,Energy=KVcIt,1.0mS,SQUAREWAVE:K=1,22,VCCURVE(2)EXP.WAVE(10 x1000),PW:DEPENDINGONWAVEVC=VPeak,IPCURVE,10us,IP,1000us,Prev,Energy=KVcIt,Exp.Wave:K=1.4,23,TRRRG1CURCUIT,REVERSERECOVERYTIME,IF=500maIR=1.00AIrr=0.25IR,Back,24,TRRWAVEFORM,REVERSERECOVERYTIME,IR,TRR,Irr=0.25IR,0V,Prev,25,VFDWAVEFORM,V,I,VFD效應曲線,正常VF曲線,Back,26,VFDTESTTIMING,100us,400usVFD1,4ms,4ms,600usVFD2,VFD=/VFD1-VFD2/,Prev,27,SKYSURGE,從陽極加上負定電流,電流值達到設定值時記錄二極體兩端電壓,+HV,IZ,-HV,VR,Back,28,SkySurge,TESTTIMING,1000us,2us,10TIMES,Prev,29,ZZT/ZZK,+HV,IZ+Iac,-HV,VZ,Back,1.崩潰動態阻抗(ZZT)測試:在測試的IZ電流上再疊加一AC電流(1KHz,IAC(RMS)=10%xIZ)計算出動態阻抗ZZT.,1.2.崩潰轉折點動態阻抗(ZZK)測試:在所設定IZK電流條件下,疊加一AC電流(1KHz,IAC(RMS)=10%xIZK)計算出動態阻抗ZZK.,30,ZZk,ZZtCURVE,Prev,-V,-I,Iz+iac,Iz+iac,ZZK,ZZt,0.250mA+0.025mA,DC,AC1KHz,31,Iac1kHz,Idc,IZ+Iac,D.U.T.,VZ+Vac,LowPassFilter,Iac,Rectify,HighPassFilter,Vac(RMS),VacIac,=,ZZk,TESTFLOW,Prev,32,DATASHEET,33,WEI-MINTESTER,BF610CBS610VF600CFR600,TVS600CVC6