PMOS

Simple PMOS Transistor

Block Screenshot

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

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