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    ղ    Ϊҳ
    Ʒ
    > IGBTɢ >

    IGBTӢע-ƽ̨¶밲ȫ

    Դhttp://www.nelsondesignllc.com/
    IGBT
    ģ
    IGBTIGBTֺFWDֹIGBTԴڲIGBTͷܣFWDоƬǸԷĵĺϼƼΪIGBT巢ⷢĿɷΪ̬ͽݽɱӢע-ƽ̨
    IGBTһ뿪Ҫڣ

    1IGBTڵͨʱб͵ѹ-Vcesat
    2IGBTڿʱпܺ-EonEoff

    IGBTĵĸԴӢע-ƽ̨VcesatɵͨӢע-ƽ̨EonEoffɿӢע-ƽ̨
    ͨ + = IGBT

    FWDҲӢע-ƽ̨Ϊ

    1ͨʱͨѹVf
    2ڷָĹзָܺģErec

    VfɵͨӢע-ƽ̨ErecɿӢע-ƽ̨
    ͨ + = FWD
    VcesatEonEoffVfErecIGBT/FWDоƬļIGBT/FWDоƬͬӢע-ƽ̨Ӣע-ƽ̨VcesatӢע-ƽ̨EonӢע-ƽ̨Ӣע-ƽ̨EoffVfErecҲͬ
    IGBTĿɷΪ̬ĺͶ̬о̬İ̬ͨĺͶ̬Ӣע-ƽ̨Ӣע-ƽ̨̬ģģͨĺ͹ضڹضʱӢע-ƽ̨ĵԼӢע-ƽ̨ѹӢע-ƽ̨Ӣע-ƽ̨˻СԺԲ˼㾲̬ĵʱԲǶ̬ƽ˵ľ̬һָ̬ͨӢע-ƽ̨

    IGBTӢע-ƽ̨-IGBTͨģ
    IGBTͨڱ״̬Ӣע-ƽ̨IGBT伫ѹԼڱ͵ѹVcesatӢע-ƽ̨
    IGBTָ̬ͨIGBTͨڵͨѹVcesat
    VcesatIcĹϵͼĽԷʾ
    Vcesat = Vt0 + Rce * Ic
    IGBTĵͨģ
    Pcond = d * Vcesat * IcdΪIGBTĵͨռձ
    IGBT͵ѹĴСӢע-ƽ̨ͨĵIcоƬĽTjżѹVgeй
    Ӣע-ƽ̨IGBT͵ѹֵVcesatӢע-ƽ̨
    ӢIGBTµı͵ѹֵ
    1Tj=25Ӣע-ƽ̨Ӣע-ƽ̨2Tj=125ΪIc,nom(ıƵ)VGE=+15VӢע-ƽ̨
    IGBT-IGBTģ
    IGBT֮ԴڿܺӢע-ƽ̨Ϊڿͨ͹ضϵ˲Ӣע-ƽ̨͵ѹص
    ſƵʵеıҲñȽϴİͨĺ͹ضڸͨضʱģͨӵؽ͵ѹٶʱַõͬʱ迼ʵʵο֮IJ
    VceӽEonEoffɽƵؿIcVceȣ
    Eon = EON * IC/IC,NOM * Vce /
    Eoff = EOFF * IC/IC,NOM * Vce /
    IGBTĿģ
    PSW = Fsw * (Eon + Eoff)Ӣע-ƽ̨fSWΪƵӢע-ƽ̨
    IGBTܺĵĴС뿪ʱĵIcӢע-ƽ̨ѹVceоƬĽ£Tjй
    IGBTܺĵֵEonӢע-ƽ̨Ӣע-ƽ̨Eoff
    ӢIGBTµĿֵܺ
    1Tj=252Tj=125ΪIC,NOM(ıƵ)Ӣע-ƽ̨
    IGBT-FWDģ
    ָFWDĹͨתΪϵ˲ΪͨٻָΪ״̬
    VrӽErecɽƵؿIfVrȣ
    Erec = EREC * If /IF,NOM * Vr/
    FWDĿģ
    Prec = fSW * ErecfSWΪƵ
    FWDָܺĵĴСͨʱĵIf仯dif/dtѹVrоƬĽ£Tjй
    Ӣע-ƽ̨IGBTָܺĵֵERECӢע-ƽ̨
    ӢIGBTӢע-ƽ̨µķֵָܺ
    1Tj=252Tj=125ΪIF,NOMӢע-ƽ̨ıƵӢע-ƽ̨
    IGBT-С᣺
    IGBT:
    ͨģ

    1IGBTоƬй
    2йأIGBTռձȳTj߶
    3йأVgeӶС

    ģ

    1IGBTоƬй
    2빤йأ뿪ƵӢע-ƽ̨Ӣע-ƽ̨ѹTj߶
    3йأRgӢע-ƽ̨żضϵѹӶС

    FWD:
    ͨģ

    1FWDоƬй
    2빤йأFWDռձȳӢע-ƽ̨

    ģ

    1FWDоƬй
    2빤йأ뿪ƵѹTj߶

    ϵͳܵģ
    IGBTܵPTrΪ̬ͨ뿪֮ܵPDΪ̬ͨĺͿ֮Ӣע-ƽ̨ԱƵΪӢע-ƽ̨ϵͳܵPtotΪ6IGBT6֮Ӣע-ƽ̨
    ֤: ҸͼƬ
       Ϻ˵ӿƼ޹˾
       ϵˣС
       ߣ021-58979561
       ҵѯqq447495955
       ҵѯqq1852433657
       ҵѯqq513845646
       ֧qq313548578
       Ⱥ376450741
       ҵѯ:  ҷϢ
       ҵѯ:  ҷϢ
       ҵѯ:  ҷϢ
       ֧:  ҷϢ
       ý:  ҷϢ

    Ӣע-ƽ̨