SIMPLORER User Manual V6.0 - FER-a

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112 Modeling with Circuit Components
Equivalent Line (MOSEQUL):
The MOS characteristic is defined by an Equivalent
line. You have to enter a value for the Forward voltage,
Bulk resistance and Reverse resistance.
Vlimit stands for the intersection of the forward and reverse
characteristic and is calculated by the program itself.
Exponential Function (MOSEXP):
The MOS characteristic is defined by an Exponential
function. You have to enter values for the Saturation
current, Thermal voltage and Reverse resistance.
XY Data Pairs (MOSXY)
The MOS characteristic is defined by a data table. You can define the table within the characteristic
dialog directly or load an existing file. The data pairs are displayed in the lookup
table and used for the characteristic. You can modify the data when necessary. See also “Separate
Component Characteristic” on page 297.
� «Element Name»
The characteristic of the MOS is defined by a characteristic component. Characteristic parameter
type. Enter the name in the text box (e.g. XY1.VAL, EXP.VAL) or use the pin to connect
the characteristic component. The internal used diode type is MOS.
� � «Use pin»
If the box is checked, the name is defined by the quantity connected to the pin, otherwise the
name in the text box is used.
«Control Signal»
Defines the MOS control signal. Control parameter type. Enter a numerical value, a variable,
or an expression in the text box or use the pin to connect a quantity.
� � «Use pin»
If the box is checked, the name is defined by the quantity connected to the pin, otherwise the
name in the text box is used.
Component Parameters
Description [Unit] Parameter Name Data Type
Characteristic; MOS CH real
Control Signal; All components CTRL real
Forward Voltage [V]; MOSEQUL VF real
Bulk Resistance [Ω]; MOSEQUL RB real
Reverse Resistance [Ω]; MOSEQUL/MOSEXP RR real
Saturation Current [A]; MOSEXP ISAT real
Thermal Voltage [V]; MOSEXP VT real
Characteristic; MOSXY FILE file
I
vt () – Vf = --------------------- for v() t ≥ Vlimit R b
vt ()
I = --------- for v() t < Vlimit R r
vt ()
---------
⎛ Vt ⎞
it () = Is ⋅ ⎜e– 1⎟
for v() t ≥ 0
⎝ ⎠
it ()
vt ()
=
--------- for v() t < 0
R r