blocknlCJ

Non-linear capacitance computation of JFET and GaAs MESFET

Extends from Modelica.Blocks.Interfaces.SI2SO (2 Single Input / 1 Single Output continuous control block).

Parameters

TypeNameDefaultDescription
Modelica.SIunits.EntropykModelica.Constants.kBoltzmann's constant
Modelica.SIunits.ElectricChargeq1.6021892e-19Electron charge
RealGapC17.02E-4First bandgap correction factor Silicon
Modelica.SIunits.TemperatureGapC21108.0Second bandgap correction factor Silicon
IntegerLevel1JFET modeling level (check documentation layer for details)
Modelica.SIunits.TemperatureTnom300.15Reference temperature
Modelica.SIunits.VoltageVT00Threshold voltage at reference temperature
RealTCV0Linear temperature coefficient of threshold voltage
Modelica.SIunits.CurrentIS1.e-14Transport saturation current
Modelica.SIunits.VoltageEGif Level == 3 then 0.73 else 1.11Energy gap for temperature effect on saturation current at 0 K
RealN1Current emission coefficient
RealXTIif Level == 3 then 2 else 3Saturation current temperature exponent
Modelica.SIunits.VoltagePB0.8Built-in potential at reference temperature
Modelica.SIunits.CapacitanceCGS0.5e-12Zero-bias gate-source depletion capacitance at reference temperature
Modelica.SIunits.CapacitanceCGD0.5e-12Zero-bias gate-drain depletion capacitance at reference temperature
RealMif Level == 3 then 0.5 else 0.33Junction grading coefficient
RealFC0.5Factor for linearization of depletion capacitance formula
Modelica.SIunits.TimeTT5e-9Ideal transit time
Modelica.SIunits.InversePotentialALPHA1Hyperbolic tangient fitting parameter
Modelica.SIunits.VoltageDELTA0.2Voltage range for transition
Modelica.SIunits.VoltageVMAX0.5Limit voltage for carrier velocity saturation
Modelica.SIunits.ConductanceGminDC1e-16Leakage conductance
RealArea1Relative area occupied by capacitor
BooleanGStrueTrue if gate-source junction
RealEMin-100if x < EMin, the exp(x) function is linearized
RealEMax40if x > EMax, the exp(x) function is linearized

Connectors

TypeNameDefaultDescription
RealInputu1 (from SI2SO)Connector of Real input signal 1
RealInputu2 (from SI2SO)Connector of Real input signal 2
RealOutputy (from SI2SO)Connector of Real output signal
Modelica.Blocks.Interfaces.RealInputTdevDevice temperature

Components

TypeNameDefaultDescription
Modelica.SIunits.VoltagevgsGate-source voltage
Modelica.SIunits.VoltagevgdGate-drain voltage
Modelica.SIunits.VoltagevDiode voltage
Modelica.SIunits.CapacitanceCvalDiode capacitance