UJT FET BJT IG-FET J-FET - ee. mabani1/index_files/Ch5-3.pdf · PDF file2 BJT: Bipolar...

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Transcript of UJT FET BJT IG-FET J-FET - ee. mabani1/index_files/Ch5-3.pdf · PDF file2 BJT: Bipolar...

  • 5-3

    1

    .

    . 66-5

    BJT2

    3

    .

    . BJT

    p n .

    1 Transistor: TRANSfer resISTOR2 BJT: Bipolar Junction Transistor, 3 Discrete

    Transistor

    UJT FET BJT

    IG-FET J-FET

    MES-FET MOS-FET

    HEMT IGBT

    66-5

  • np

    n

    E B C

    npn 68-5

    67-5 . pnp npn .

    .

    1

    ) C( 2 ) B( 3 ) E ( 5 . -

    . B-E B-C 67

    :

    TBE VnvB ei

    ConstIKmV ~/.T

    VB

    BE

    :/2,

    E C 67-5

    68-5 .

    npn

    .

    67-5

    )( !

    1 Collector,

    2 Base,

    3 Emmitter,

    pnp - npn -: BJT 67-5

  • 5-3-1

    : 1

    2

    3

    .

    4

    5 .)69-5 (

    - - CE

    ( .)70-5

    CE BE

    :

    1 CE: Common Emitter2 CB: Common Base3 CC: Common Collector4 Four Pole5 Two Port

    Ii Io.

    Vo

    . ..

    CB

    Vo

    .

    Vi

    CC

    .

    CE

    .

    Vi Vo

    Ii Io.

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    )CC( ) CB( )CE( : 69-5

    CEvBEv

    Ci

    Bi

    CE 70-5

  • :1 Bi BEv CEV

    : 2 Ci CEv BEV BI

    : 3 Ci BEv Bi CEV

    4 BE

    VCE

    (

    . )

    .

    CEv 71-5

    .

    CEv 71-5

    VA ( 72-5

    ).

    1 Input Characteristic

    2 Onput Characteristic3 Transfer Characteristic

    4

    mVvBE 620

    mV600

    mV560

    VvBE 5/0

    Ci

    CEvAV

    A30

    A20

    A10

    0BI

    Ci

    CEvAV

    IB - VBE - 71-5

  • :

    VVBE 5.0 0 BI 0 Ci .

    1

    .

    ) ( 71-5

    ) ( 72-5

    2 .

    V3.02.0 CEv. 72-5

    A10BI V2.0V SatCECEv A1mIC A40BI

    V3.0V SatCECE

    v A4mIC .

    1Cut-off Region 2 Saturation Region

    V_VCE

    0V 0.5V 1.0V 1.5V 2.0VIc(Q1)

    0A

    2.5mA

    5.0mA

    IB = 40uA

    30uA

    20uA

    10uA

    IB = 0uA

    72-5

  • 0 Ci

    ( ) (

    . )

    1.

    ) (

    .

    ) (

    :

    - :maxCECE Vv

    :maxCC Ii

    : max. DCEC Pvi

    1 Active Region

    Ci

    CEv

    maxDP

    maxCI

    maxCEV0

    73-5

  • - . 73-5

    maxVCECEv Ci

    1

    maxV,V,BDV . CEBD BV

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    )5-71(

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    2

    -5 (

    73(.

    1000V10VCEmax: 100A10mAICmax

    500W50mWPDmax 40 : . VVCEmax

    100mAICmax 300 mWPDmax .

    . C25

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    74-5 .

    .

    1 Break-Down Voltage2 SOA: Safe Operating Area

    1

    125

    0

    25

    ND PP /

    ][ CT o

    74-5

  • 500mWPDN C75T

    250mWPDmax .

    pnp npn :

    (1

    ,,npn: 0 ) CECB vii pnp : 0,, CECB vii.

    5-3-2

    - ) (

    . ) 72-5( ) (

    )5-72(

    A

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    veIi TBE 1./

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    11

    1 Forward Mode2 Early Voltage

  • )5-74( .Consti

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    :

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    BAC ( ( :b

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    .

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    1001011.0

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    100

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    01 /0 1

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    T=100C

    T=25C

    T=-50C

    0

    100

    200

    300

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    50

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    100101.0

    - - : 75-5

  • DC 5-3-2-1

    ) 3-1-1-5(

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    BE DC VV .

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    0.5VVBE :

    .

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    DC 72-5

    .)76-5 (

    1000.7VV

    0.8VVBEsat 0.2 VVCEsat .

    VCEsatVBEsat V

    ICIB

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    - - - : DC 76-5

  • CCE( 14-5 I,V ( 77-5 .

    R1 6 :

    -

    (

    ).

    77-5 .

    . 78-5 76-5

    0.7VV 100

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    Ak

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    CECC KVL VR2,,V :

    VmAkVIRVVVIRV CCCCECECCC 35.365.216202

    Q1

    R2

    1k

    R1

    200k

    Vcc

    6V

    +

    -

    14-5 77-5

    .

    I

    I.

    R2

    1k

    E

    E

    E

    Q1

    .

    V

    R1

    200k

    C

    CI.B

    0.7V

    +

    -

    BVcc

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    +

    -

    B

    77-5 78-5

  • CEsatCE V3.35VV

    .

    . 250 15-5

    78-5 :

    AIB 5.26 . :

    mAAII BC 625.65.26250

    VmAkVIRVV CCCCE 625.0625.6162

    CEsatCE VV625.0-V

    76-5 77-5 .

    . 5-79

    : )( IB IC

    mAk

    VV

    R

    VVIVVV CECCCCEsatCE 8.51

    2.06

    2,2.0

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    C

    0.8V

    +

    -

    Vcc

    6V

    +

    -

    ...

    CEsat

    Q1

    B.

    B

    I

    E

    R2

    1k

    V

    C

    E

    I

    V

    R1

    200k

    0.2V

    +

    -BEsat

    77-5 79-5

  • : 80-5 16-5

    R1 = 100k -

    R1 = 500k -

    .

    :

    Q1 .

    81-5 ) 76-5 (

    R1R2: .

    VCC81-5 ( .(

    :

    21

    2121,

    21

    2

    RR

    RRRRRV

    RR

    RV thCCth

    0.7VV 100

    .

    R3

    10k

    Q1

    R41k

    Vcc

    12V

    +

    -

    R1

    R218k

    16-5 80-5

    R3

    10k

    I

    E

    .

    B

    Vth+

    -

    C

    R41k

    Q1

    .

    R41k

    I

    CVcc

    12V

    +

    -

    E

    B

    0.7V

    +

    -

    B

    C

    I

    VB

    Rth

    .

    IVcc

    12V

    +

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    .

    R1

    I

    .

    R3

    10k

    B

    R218k

    .

    E

    V

    I

    Q1

    E

    0.7V

    +

    - B

    C

    - 81-5

  • : R1 = 100k -

    kkkRVV

    kk

    kV thth 3.1518100,83.11218100

    18

    0.5V1.83VVth ( .( KVL

    :

    mAmARR

    VVI

    II

    III

    IRVIRV

    th

    thC

    BC

    CBE

    EBthth

    97.09716251.04)1(

    04

    :

    VIRIRVVIRVIRV CCCCCEECECCC 3.11

    43,043

    CEsatCE VVV .