二极体测试简介CARL

二極體測試簡介J.F.YANGDATE:MAY/24Next1討論主題物理特征簡介應用簡介介紹各項參數測試措施PrevNext2PNJUNCTIONWITHNOEXTERNALBIAS物理特征-無偏壓Back3PNJUNCTIONWITHREVERSEEXTERNALBIAS物理特征-逆向偏壓BackPrev4PNJUNCTIONWITHFORWARDEXTERNALBIAS物理特征-順向偏壓BackPrev5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Back6電壓穩定器電壓基準器應用簡介ZenerDiodeBackPrev7應用簡介TVSDC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GoBackPrev8參數項目(1)RC–TESTCLIPCONTACTCHECKSOP–D.U.T.OPEN/SHORTPOLARITYIR–REVERSELEAKAGECURRENTVF–FORWARDVOLTAGEVR–REVERSEVOLTAGEDVF–熱效應順向電壓差測試Back9參數項目(2)VC–CLAMPINGVOLTAGE，TVSPRODUCTTRR

–RVERSERECOVERYTIMEVFD–SKYSURGE

–SURGECURRENTZZT/ZZK

–DYNAMICIMPEDANCEPrev10RC測試措施:KelvinContactI=500maR=V/IPW=4+0.3+4msCRACRKBack11SOP測試措施:類似VF測試措施V<0.20V=ShortV>3.00V=OpenPW=6.3+0.3+6.3msIF=100maVBack12IR

逆向漏電流測試SOP鉴定後,從陽極加上負電壓少數電子從陰極流向陽極PW=4+IRPW+4ms+HVIR-HVBack13IR

CURVE-V-I定電壓測試逆向漏電流Prev14VF順向電壓測試PW=4+VFPW+4msIFVFBack15VF

CURVE+I+VPrev16VR

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+HVIZ-HVVRBack17VR

CURVE-V-I定電流測試逆向崩潰電壓Prev18DVF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+4msIFVFIMBack19DVF

TIMING

IMIF(Heating)IMPW:IM=2msIF=75msDVF=/VF1-VF2/400usReadVF21.0msReadVF1Prev20VC

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+HVIZ-HVVRBack21VCCURVE(1)

SQUAREWAVEPW:IP=0.3msVC=VPeakVCURVEIPCURVEPrevNext400W,600W,1500W,500W0.55j,0.80j,2.10j,7.00jEnergy=KVcIt@1.0mSSQUAREWAVE:K=122VCCURVE(2)

EXP.WAVE(10x1000)PW:DEPENDINGONWAVEVC=VPeakIPCURVE10us½IP1000usPrevEnergy=KVcItExp.Wave:K=1.423TRR

RG1CURCUIT

REVERSERECOVERYTIMEIF=500maIR=1.00AIrr=0.25IRBack24TRR

WAVEFORM

REVERSERECOVERYTIMEIRTRRIrr=0.25IR0VPrev25VFD

WAVEFORM

VIVFD效應曲線正常VF曲線Back26VFD

TESTTIMING

100us400usVFD14ms4ms600usVFD2VFD=/VFD1-VFD2/Prev27SKYSURGE

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+HVIZ-HVVRBack28SkySurge

TESTTIMING1000us2us10TIMESPrev29ZZT/ZZK

+HVIZ+Iac-HVVZBack1.

崩潰動態阻抗

(ZZT)測試:

在測試旳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.30ZZk,ZZt

CURVEPrev-V-IIz+iacIz+iacZZKZZt0.250mA+0.025mADCAC1KHz31Iac1kHzIdcIZ+IacD.U.T.VZ+VacLowPassFilterIacRectifyHighPassFilterVac(RMS)VacIac=ZZkTESTFLOWPrev32DATASHEET33WEI-MINTESTERBF610C

BS610

VF600C

FR600

TVS600C

VC600C

ZT600H

PC610

34TTK