modelCjS
Junction capacitance model of Ebers-Moll BJT with thermal port
Extends from Interfaces.TwoPort (Partial model invoking two bondgraphic connectors).
Information
The junction capacitance source element is a directed TwoPort. It inherits the effort and flow variables from the directed TwoPort. Junction capacitances are used in semiconductor technology to model the charge accumulated in the vicinity of a pn-junction.The junction capacitance element has its preferred causality away from the element.
The model also computes the diodic current through the junction and puts it out as an output signal.
Potential variables: e1: Bondgraphic effort variable of inflow f1: Bondgraphic flow variable of inflow, normalized positive for flows into the model e2: Bondgraphic effort variable of outflow f2: Bondgraphic flow variable of outflow, normalized positive for flows out of the model id: Diodic current through the junction (output variable) Parameters: Is: Transport saturation current (default value = 1e-16 Amp) Tau: Ideal transit time (default value = 5e-9 sec) Cj: Zero bias depletion capacitance (default value = 0.5e-12 F) Phi: Diffusion voltage (default value = 0.8 Volt) M: Gradation exponent (default value = 0.333) EG: Energy gap for temperature effect on saturation current (default value = 1.11 Volt) N: Current emission coefficient (default value = 1) XTI: Saturation current temperature exponent (default value = 3) Gb: Leakage conductance (default value = 1e-15 Mho) EMin: Minimum exponent (default value = -100) EMax: Maximum exponent (default value = 40)
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.SIunits.Temperature | Tnom | 300.15 | Reference temperature |
| Modelica.SIunits.Current | Is | 1.e-16 | Transport saturation current |
| Modelica.SIunits.Time | Tau | 5e-9 | Ideal transit time |
| Modelica.SIunits.Capacitance | Cj | 0.5e-12 | Zero bias depletion capacitance |
| Modelica.SIunits.Voltage | Phi | 0.8 | Diffusion voltage |
| Real | M | 0.333 | Gradation exponent |
| Modelica.SIunits.Voltage | EG | 1.11 | Energy gap for temperature effect on saturation current |
| Real | N | 1 | Current emission coefficient |
| Real | XTI | 3 | Saturation current temperature exponent |
| Modelica.SIunits.Conductance | Gb | 1e-15 | Leakage conductance |
| Real | EMin | -100 | if x < EMin, the exp(x) function is linearized |
| Real | EMax | 40 | if x > EMax, the exp(x) function is linearized |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| BondLib.Interfaces.BondCon | BondCon1 (from TwoPort) | Left bond graph connector | |
| BondLib.Interfaces.BondCon | BondCon2 (from TwoPort) | Right bond graph connector | |
| Modelica.Blocks.Interfaces.RealOutput | y | Connector of Real output signal |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real | e1 (from TwoPort) | Bondgraphic primary effort | |
| Real | f1 (from TwoPort) | Bondgraphic primary flow | |
| Real | e2 (from TwoPort) | Bondgraphic secondary effort | |
| Real | f2 (from TwoPort) | Bondgraphic secondary flow | |
| Junctions.J0p3 | J0p3_1 | ||
| Bonds.fBond | B1 | ||
| Sensors.De | vbi | ||
| Bonds.eBond | B2 | ||
| mC2 | Cj1 | ||
| Sources.mSe | Vbi | ||
| Bonds.fBond | B3 | ||
| Junctions.J1p3 | J1p3_1 | ||
| Bonds.eBond | B4 | ||
| Sensors.Df | id | ||
| Bonds.fBond | B5 | ||
| Junctions.J0p3 | J0p3_2 | ||
| Bonds.fBond | B6 | ||
| Bonds.fBond | B7 | ||
| Passive.G | G1 | ||
| nlC2 | nlC1 | ||
| DjS | DjS1 | ||
| Junctions.J0p3 | J0p3_3 | ||
| Bonds.fBond | B8 | ||
| Sensors.De | Tdev | ||
| Bonds.eBond | B9 |