输出能力可调的高压浮栅驱动芯片设计

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1、万方数据东南大学工程硕士学位论文万方数据AbstractThepowerinsulatedgatebipolartramistorsOGBTs)asswitchingdevicesalewidelyusedinthepulsewidthmodulation口W呐motordrivesystemThegatedrivecircuitnmstprovidesufficientdri、,-ingcurrerlttochargeanddischarge吐写gatecapacitancesofallIGBT,s0dr酗I塔abttilyisalliⅡIp

2、orta址indexfordaiverICs．Thedesignofdrivingcapabili珥needstoconsideritseffectsonswitchingcharacteristicsofthepowersemiconductor．BecamelargerarivingCUl're,lllcanlealizehigherswitchingspeectlowerswitcl[1inglosses,butresultsinmoleelecn

3、omagneticinterferencescallsedbylargercurrenla

4、ndvoltagespiesatthesametime，soa蛔considerationofanoutputdrivecircuitdesignind晰echipsisthefundamentaltrade-offbetweenswitchingnoisesandswitchinglosses．Theswitchingcharacted如csofanpowerIGBTdevicearefllstlyintrtxtucedinthisthesis,andtheeffeclsofparasiticcatxlcilances011s咖hing醴瞰a

5、c鼋e：riS峨arefocusedOILThegatedm'ecircuitIequirememiD曲】dingiaealdrivingvoltageandcutreDtwayeformsandtheideal州agvoltageandcurrentamplitudeoflowswilchinglossesandlowovelshootsaIeobtained．Secondly,theUaditionalgatedrivecircuitisanalyzedindetail．whiletheconventionalgate出毗rwhichget

6、slow-losseswiUinevitably钱lu鸵highovershoots．ThenthelossesinⅡ】egaledrivecircuJIandcurrent-voltageovershootsgenerationmechanismsaleflll-therdescnt,ed．anditisfoundthatthekeys10compromisebetweens丽tchiaglossesandcurrentandvoltageovershootsalecapableofindepenaentlycorraolledcollect

7、orcurrentlransienldiddtandcollector-emil／ervoltagetransientdvcE／dt．Basedonin也pmdiscussionsofthreekindsofiraegratedgateconlrolcircuits,allimoroveddrivecircuitwithfour-slageadjustablecll涮吐thatintegratedinahigh-voltagefloatinggatedriverc螂isprovidedint1)isthesis，improvingtrade-o

8、ffbetweenswitchinglossesandcurrentandvoltageovershoots．Thepromotedcircuitcallrealizetheindependerlcontrolsofd!fc／dtanddvcB／dt,allowsred．1ionoflossesandovershootssinlultaneottsly．Thefour-stageadjustabledrivescheraethatwholeswitchingprocessesandthenonlineareffects0f低Millel"cap

9、acilanceareconsideredisbasedOilCSMC600VO，5岫SOIprocessfor1ayoutdesignandtape