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PMOS

Simple PMOS Transistor

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Description

The PMOS model is a simple model of a p-channel metal-oxide semiconductor FET. It differs slightly from the device used in the SPICE simulator. For more details please care for H. Spiro.

The model does not consider capacitances. A small fixed drain-source resistance is included (to avoid numerical difficulties).

Some typical parameter sets are:

W [m] L[m] Beta [1/V²] Vt [V] K2 K5 DW [m] DL [m]
50.e-6 8.e-6 .0085 -.15 .41 .839 -3.8e-6 -4.0e-6
20.e-6 6.e-6 .0105 -1.0 .41 .839 -2.5e-6 -2.1e-6
30.e-6 5.e-6 .0059 -.3 .98 1.01 0 -3.9e-6
30.e-6 5.e-6 .0152 -.69 .104 1.1 -.8e-6 -.4e-6
30.e-6 5.e-6 .0163 -.69 .104 1.1 -.8e-6 -.4e-6
30.e-6 5.e-6 .0182 -.69 .086 1.06 -.1e-6 -.6e-6
20.e-6 6.e-6 .0074 -1. .4 .59 0 0

Parameters

  • Width [m]

    W

    Properties : Type 'vec' of size 1.

  • Length [m]

    L

    Properties : Type 'vec' of size 1.

  • Transconductance parameter [A/(V*V)]

    Beta

    Properties : Type 'vec' of size 1.

  • Zero bias threshold voltage [V]

    Vt

    Properties : Type 'vec' of size 1.

  • Bulk threshold parameter

    K2

    Properties : Type 'vec' of size 1.

  • Reduction of pinch-off region

    K5

    Properties : Type 'vec' of size 1.

  • Narrowing of channel [m]

    dW

    Properties : Type 'vec' of size 1.

  • Shortening of channel [m]

    dL

    Properties : Type 'vec' of size 1.

  • Drain-Source-Resistance [Ohm]

    RDS

    Properties : Type 'vec' of size 1.

Default properties

  • Inputs :

    • Modelica variable name : 'G'

      Implicit variable.

  • Outputs :

    • Modelica variable name : 'D'

      Implicit variable.

    • Modelica variable name : 'B'

      Implicit variable.

    • Modelica variable name : 'S'

      Implicit variable.

  • Parameters :

    • Modelica parameter name : 'W'

      Default value : 0.00005

      Is a state variable : no.

    • Modelica parameter name : 'L'

      Default value : 0.000006

      Is a state variable : no.

    • Modelica parameter name : 'Beta'

      Default value : 0.0000105

      Is a state variable : no.

    • Modelica parameter name : 'Vt'

      Default value : -1

      Is a state variable : no.

    • Modelica parameter name : 'K2'

      Default value : 0.41

      Is a state variable : no.

    • Modelica parameter name : 'K5'

      Default value : 0.839

      Is a state variable : no.

    • Modelica parameter name : 'dW'

      Default value : -0.0000025

      Is a state variable : no.

    • Modelica parameter name : 'dL'

      Default value : -0.0000021

      Is a state variable : no.

    • Modelica parameter name : 'RDS'

      Default value : 10000000

      Is a state variable : no.

  • File name of the model : PMOS

Interfacing function

  • SCI/modules/scicos_blocks/macros/Electrical/PMOS.sci

Modelica model

  • SCI/modules/scicos_blocks/macros/Electrical/PMOS.mo

See also

  • NMOS — Simple NMOS Transistor
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Last updated:
Mon Jun 17 17:53:26 CEST 2024