WOLFRAM SYSTEM MODELER
NPNSimple NPN BJT according to Ebers-Moll with heating port |
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Wolfram Language
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SystemModel["Modelica.Electrical.Analog.Semiconductors.NPN"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This model is a simple model of a bipolar NPN junction transistor according to Ebers-Moll.
A heating port is added for thermal electric simulation. The heating port is defined in the Modelica.Thermal library.
A typical parameter set is (the parameter Vt is no longer used):
Bf Br Is Vak Tauf Taur Ccs Cje Cjc Phie Me PHic Mc Gbc Gbe - - A V s s F F F V - V - mS mS 50 0.1 1e-16 0.02 0.12e-9 5e-9 1e-12 0.4e-12 0.5e-12 0.8 0.4 0.8 0.333 1e-15 1e-15
References: [Vlach1983]
Parameters (30)
| useHeatPort |
Value: useTemperatureDependency Type: Boolean Description: = true, if heatPort is enabled |
|---|---|
| T |
Value: 293.15 Type: Temperature (K) Description: Fixed device temperature if useHeatPort = false |
| Bf |
Value: 50 Type: Real Description: Forward beta |
| Br |
Value: 0.1 Type: Real Description: Reverse beta |
| Is |
Value: 1e-16 Type: Current (A) Description: Transport saturation current |
| Vak |
Value: 0.02 Type: InversePotential (1/V) Description: Early voltage (inverse), 1/Volt |
| Tauf |
Value: 0.12e-9 Type: Time (s) Description: Ideal forward transit time |
| Taur |
Value: 5e-9 Type: Time (s) Description: Ideal reverse transit time |
| Ccs |
Value: 1e-12 Type: Capacitance (F) Description: Collector-substrate(ground) cap. |
| Cje |
Value: 0.4e-12 Type: Capacitance (F) Description: Base-emitter zero bias depletion cap. |
| Cjc |
Value: 0.5e-12 Type: Capacitance (F) Description: Base-coll. zero bias depletion cap. |
| Phie |
Value: 0.8 Type: Voltage (V) Description: Base-emitter diffusion voltage |
| Me |
Value: 0.4 Type: Real Description: Base-emitter gradation exponent |
| Phic |
Value: 0.8 Type: Voltage (V) Description: Base-collector diffusion voltage |
| Mc |
Value: 0.333 Type: Real Description: Base-collector gradation exponent |
| Gbc |
Value: 1e-15 Type: Conductance (S) Description: Base-collector conductance |
| Gbe |
Value: 1e-15 Type: Conductance (S) Description: Base-emitter conductance |
| EMin |
Value: -100 Type: Real Description: If x < EMin, the exp(x) function is linearized |
| EMax |
Value: 40 Type: Real Description: If x > EMax, the exp(x) function is linearized |
| useTemperatureDependency |
Value: false Type: Boolean Description: = true, if parameters Bf, Br, Is and Vt depend on temperature |
| Vt |
Value: 0.02585 Type: Voltage (V) Description: Voltage equivalent of temperature |
| Tnom |
Value: 300.15 Type: Temperature (K) Description: Parameter measurement temperature |
| XTI |
Value: 3 Type: Real Description: Temperature exponent for effect on Is |
| XTB |
Value: 0 Type: Real Description: Forward and reverse beta temperature exponent |
| EG |
Value: 1.11 Type: Voltage (V) Description: Energy gap for temperature effect on Is |
| NF |
Value: 1.0 Type: Real Description: Forward current emission coefficient |
| NR |
Value: 1.0 Type: Real Description: Reverse current emission coefficient |
| IC |
Value: 0 Type: Voltage (V) Description: Initial value of collector to substrate voltage |
| UIC |
Value: false Type: Boolean Description: Decision if initial value IC should be used |
| useSubstrate |
Value: false Type: Boolean Description: = false, if substrate is implicitly grounded |
Connectors (5)
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heatPort |
Type: HeatPort_a Description: Conditional heat port |
|---|---|---|
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C |
Type: Pin Description: Collector |
|
B |
Type: Pin Description: Base |
|
E |
Type: Pin Description: Emitter |
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S |
Type: NegativePin Description: Substrate |
Used in Examples (1)
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Modelica.Electrical.Analog.Examples Heating NPN NOR Gate |
Used in Components (1)
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Modelica.Electrical.Analog.Examples.Utilities Transistor with resistance an capacitance |
Revisions
- March 11, 2009
by Christoph Clauss
conditional heat port added
- March 20, 2004
by Christoph Clauss
implemented