NPN

NPN transistor

$\epsfig{file=NPN.eps,height=54pt}$

This model is a simple model of a bipolar NPN junction transistor according to Ebers-Moll.

$\begin{figure}\begin{center} \epsfig{file=NPN_gui.eps,width=300pt} \end{center}\end{figure}$

Parameter	Default value	Description
Bf	50	Forward beta
Br	0.1	Reverse beta
Is	1.e-16	Transport saturation current [A]
Vak	0.02	Early voltage (inverse), 1/Volt [1/V]
Tauf	0.12e-9	Ideal forward transit time [s]
Taur	5e-9	Ideal reverse transit time [s]
Ccs	1e-12	Collector-substrat(ground) cap. [F]
Cje	0.4e-12	Base-emitter zero bias depletion cap. [F]
Cjc	0.5e-12	Base-coll. zero bias depletion cap. [F]
Phie	0.8	Base-emitter diffusion voltage [V]
Me	0.4	Base-emitter gradation exponent
Phic	0.8	Base-collector diffusion voltage [V]
Mc	0.333	Base-collector gradation exponent
Gbc	1e-15	Base-collector conductance [S]
Gbe	1e-15	Base-emitter conductance [S]
Vt	0.02585	Voltage equivalent of temperature [V]
EMin	-100	if x < EMin, the exp(x) function is linearized
EMax	40	if x > EMax, the exp(x) function is linearized

Inputs :

Modelica variable name : 'B'
Implicit variable.

Outputs :

Modelica variable name : 'C'
Implicit variable.
Modelica variable name : 'E'
Implicit variable.

Parameters :

Modelica parameter name : 'Bf'
Default value : 50
Is a state variable : no.
Modelica parameter name : 'Br'
Default value : 0.1
Is a state variable : no.
Modelica parameter name : 'Is'
Default value : 0
Is a state variable : no.
Modelica parameter name : 'Vak'
Default value : 0.02
Is a state variable : no.
Modelica parameter name : 'Tauf'
Default value : 1.200D-10
Is a state variable : no.
Modelica parameter name : 'Taur'
Default value : 5.000D-09
Is a state variable : no.
Modelica parameter name : 'Ccs'
Default value : 1.000D-12
Is a state variable : no.
Modelica parameter name : 'Cje'
Default value : 4.000D-13
Is a state variable : no.
Modelica parameter name : 'Cjc'
Default value : 5.000D-13
Is a state variable : no.
Modelica parameter name : 'Phie'
Default value : 0.8
Is a state variable : no.
Modelica parameter name : 'Me'
Default value : 0.4
Is a state variable : no.
Modelica parameter name : 'Phic'
Default value : 0.8
Is a state variable : no.
Modelica parameter name : 'Mc'
Default value : 0.333
Is a state variable : no.
Modelica parameter name : 'Gbc'
Default value : 1.000D-15
Is a state variable : no.
Modelica parameter name : 'Gbe'
Default value : 1.000D-15
Is a state variable : no.
Modelica parameter name : 'Vt'
Default value : 0.02585
Is a state variable : no.
Modelica parameter name : 'EMinMax'
Default value : 40
Is a state variable : no.

File name of the model : NPN

SCI/macros/scicos_blocks/ModElectrical/NPN.sci [view code]

SCI/macros/scicos_blocks/ModElectrical/Electrical.mo [view code]

NPN transistor

Contents

Palette

Description

Dialog box

Default properties

Interfacing function

Modelica model

See also

Authors