Modelica.Electrical.Spice3.Internal.Mosfet

Information

The package Mosfet contains all functions and records that are used for all types of Mosfet transistors in SPICE3.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name	Description
Mosfet	Record for Mosfet parameters
MosfetModelLineParams	Record for Mosfet model line parameters
MosfetModelLine	Type of the transistor
MosfetCalc	Mosfet Variables
mosfetInitEquations	MOSFET initial precalculations
mosfetModelLineInitEquations	Type transscription
getNumberOfElectricalPins	Number of Pins

Modelica.Electrical.Spice3.Internal.Mosfet.Mosfet

Information

This record Mosfet contains parameters that are used for all types of Mosfet transistors in SPICE3.

Extends from Model.Model (Device Temperature).

Modelica definition

record Mosfet "Record for Mosfet parameters"
  extends Model.Model;

  Modelica.SIunits.Length m_len(             start = 1e-4) 
    "L, length of channel region";
  Modelica.SIunits.Length m_width(           start = 1e-4) 
    "W, width of channel region";
  Modelica.SIunits.Area m_drainArea(       start = SpiceConstants.CKTdefaultMosAD) 
    "AD, area of drain diffusion";
  Modelica.SIunits.Area m_sourceArea(      start = SpiceConstants.CKTdefaultMosAS) 
    "AS, area of source diffusion";
  Real m_drainSquares(    start = 1.0) "NRD, length of drain in squares";
  Real m_sourceSquares(   start = 1.0) "NRS, length of source in squares";
  Modelica.SIunits.Length m_drainPerimiter(  start = 0.0) "PD, Drain perimeter";
  Modelica.SIunits.Length m_sourcePerimiter( start = 0.0) 
    "PS, Source perimeter";
  Modelica.SIunits.Voltage m_dICVDS(          start = 0.0) 
    "IC_VDS, Initial D-S voltage";
  Real m_dICVDSIsGiven "IC_VDS, IsGivenValue";
  Modelica.SIunits.Voltage m_dICVGS(          start = 0.0) 
    "IC_VGS, Initial G-S voltage";
  Real m_dICVGSIsGiven "IC_VGS, IsGivenValue";
  Modelica.SIunits.Voltage m_dICVBS(          start = 0.0) 
    "IC_VBS, Initial B-S voltage";
  Real m_dICVBSIsGiven "IC_VBS, IsGivenValue";
  Integer m_off(          start = 0) 
    "Device initially off, non-zero to indicate device is off for dc analysis";
  Integer m_bPMOS(        start = 0) "P type MOSfet model";
  Integer m_nLevel(       start = 1) "MOS model level";

end Mosfet;

Modelica.Electrical.Spice3.Internal.Mosfet.MosfetModelLineParams

Information

This record MosfetModelLineParams contains the model line parameters that are used for all kinds of mosfet transistors in SPICE3.

Modelica definition

record MosfetModelLineParams 
  "Record for Mosfet model line parameters"

   Real m_jctSatCurDensity(           start = 0.0) 
    "JS, Bulk jct. sat. current density, input - use tSatCurDens";
   Modelica.SIunits.Resistance m_sheetResistance(            start = 0.0) 
    "RSH, Sheet resistance";
   Real m_bulkJctPotential(           start = 0.8) 
    "PB, Bulk junction potential, input - use tBulkPot";
   Real m_bulkJctBotGradingCoeff(     start = 0.5) 
    "MJ, Bottom grading coefficient";
   Real m_bulkJctSideGradingCoeff(    start = 0.5) 
    "MJSW, Side grading coefficient";
   Real m_oxideThickness(             start = 1.0e-7) 
    "TOX, Oxide thickness unit: micron";
   Real m_oxideThicknessIsGiven "TOX, IsGiven value";
   Real m_gateSourceOverlapCapFactor( start= 0.0) 
    "CGS0, Gate-source overlap cap";
   Real m_gateDrainOverlapCapFactor( start= 0.0) 
    " CGD0, Gate-drain overlap cap";
   Real m_gateBulkOverlapCapFactor( start= 0.0) "CGB0, Gate-bulk overlap cap";
   Real m_fNcoef(                     start = 0.0) 
    "KF, Flicker noise coefficient";
   Real m_fNexp(                      start = 1.0) "AF, Flicker noise exponent";

end MosfetModelLineParams;

Modelica.Electrical.Spice3.Internal.Mosfet.MosfetModelLine

Information

This record contains only one variable and it provides the information on the transistor type (pmos or nmos).

Modelica definition

record MosfetModelLine "Type of the transistor"

  Integer m_type(   start = 1) "device type : 1 = n,  -1 = p";

end MosfetModelLine;

Modelica.Electrical.Spice3.Internal.Mosfet.MosfetCalc

Information

This record MosfetCalc contains variables that are neede for calculation within modeling the semiconductor models.

Modelica definition

record MosfetCalc "Mosfet Variables"

  Modelica.SIunits.Voltage m_vds "Vds,  Drain-Source voltage";
  Modelica.SIunits.Voltage m_vgs "Vgs, Gate-Source voltage";
  Modelica.SIunits.Voltage m_vbs "Vbs, Bulk-Source voltage";
  Modelica.SIunits.Current m_cbs "Ibs, B-S junction current";
  Modelica.SIunits.Conductance m_gbs "Gbs, Bulk-Source conductance";
  Modelica.SIunits.Current m_cbd "Ibd, B-D junction current";
  Modelica.SIunits.Conductance m_gbd "Gbd, Bulk-Drain conductance";
  Modelica.SIunits.Current m_cdrain "Ids";
  Modelica.SIunits.Conductance m_gds "Gds, Drain-Source conductance";
  Modelica.SIunits.Transconductance m_gm "Gm, Transconductance";
  Modelica.SIunits.Transconductance m_gmbs "Gmbs, Bulk-Source transconductance";
  Modelica.SIunits.Capacitance m_capbsb "Cbsb";
  Modelica.SIunits.Charge m_chargebsb "Qbsb";
  Modelica.SIunits.Capacitance m_capbss "Cbss";
  Modelica.SIunits.Charge m_chargebss "Qbss";
  Modelica.SIunits.Capacitance m_capbdb "Cbdb";
  Modelica.SIunits.Charge m_chargebdb "Qbdb";
  Modelica.SIunits.Capacitance m_capbds "Cbds";
  Modelica.SIunits.Charge m_chargebds "Qbds";
  Modelica.SIunits.Resistance m_sourceResistance "Rs";
  Modelica.SIunits.Resistance m_drainResistance "Rd";
  Real m_Beta "Beta";
  Modelica.SIunits.Capacitance m_capGSovl "Cgso, Gate-source overlap cap.";
  Modelica.SIunits.Capacitance m_capGDovl "Cgdo, Gate-drain overlap cap.";
  Modelica.SIunits.Capacitance m_capGBovl "Cgbo, Gate-bulk overlap cap.";
  Modelica.SIunits.Capacitance m_capOx "Cox";
  Modelica.SIunits.Voltage m_von "Von, Turn-on voltage";
  Modelica.SIunits.Voltage m_vdsat "Vdsat";
  Integer m_mode(start = 1) "Mode";

  Real m_lEff;

end MosfetCalc;

Modelica.Electrical.Spice3.Internal.Mosfet.mosfetInitEquations

Information

This function initially precalculats some values for transistor area which can be used for all transistor models.

Inputs

Type	Name	Default	Description
Mosfet	in_m		Input parameter set

Outputs

Type	Name	Description
Mosfet	out_m	Changed parameter set

Modelica definition

function mosfetInitEquations "MOSFET initial precalculations"

  input Mosfet in_m "Input parameter set";

  output Mosfet out_m "Changed parameter set";

algorithm 
  out_m := in_m;

  if (out_m.m_drainSquares == 0) then
    out_m.m_drainSquares  := 1.;
  end if;
  if (out_m.m_sourceSquares == 0) then
    out_m.m_sourceSquares := 1.;
  end if;

end mosfetInitEquations;

Modelica.Electrical.Spice3.Internal.Mosfet.mosfetModelLineInitEquations

Information

In this function during the initialization phase the transistor type is transscibed to another parameter for further usage.

Inputs

Type	Name	Default	Description
Mosfet	in_m		Input parameter set

Outputs

Type	Name	Description
MosfetModelLine	out_ml	Changed parameter set

Modelica definition

function mosfetModelLineInitEquations "Type transscription"

  input Mosfet in_m "Input parameter set";

  output MosfetModelLine out_ml "Changed parameter set";

algorithm 
  out_ml.m_type := if (in_m.m_bPMOS > 0.5) then -1 else 1;
  // -1: PMOS ; 1: NMOS

end mosfetModelLineInitEquations;

Modelica.Electrical.Spice3.Internal.Mosfet.getNumberOfElectricalPins

Information

This function getNumberOfElectricalPins identifies the number of elecrtical pins. At the current library version it is fixed to 4.

Outputs

Type	Name	Description
Integer	ret	Number of pins

Modelica definition

function getNumberOfElectricalPins "Number of Pins"

  output Integer ret "Number of pins";

algorithm 
  ret := 4;
end getNumberOfElectricalPins;