infineon NPT-IGBT控制

infineonNPT-IGBT控制TheReverseBehavioroftheNPT-IGBTinitsOn-State1ReverseStatesoftheIGBTinInverterCircuitsCausesforReverseStatesTheuseoftheIGBTininvertercircuitsdoesnotcomewithoutitsproblems.Duringtheswitchingcyclethesignsofcurrentandvoltageappliedtotheswitchingdevicechangetemporarilycausedbytheinversionofthefluxofenergybetweensupplyandload.TheIGBThasnoprovisionforcarryingnegativevoltages,thereforeitmustbeterminatedwithanantiparalleloraseriesdiode.However,itisnotpossibletocompletelysuppresstransientreversestatesoftheIGBT,whicharecausedbythetransientbehaviorofthediode(whichshowsforwardandreverserecovery)andarealsoduetoparasiticinductancewithinthecircuit.Characterandeffectofthe