SIMPLORER User Manual V6.0 - FER-a

9
290 Modeling Tools
9.2 Characteristics
• Equivalent Line (EQUL)
• Exponential Function (EXP)
• Hyperbolic Function (HYP)
• Diffusion Capacitance (CDI)
• Junction Capacitance (CSP)
• Polynom of 2nd Order (PO2)
• 2D Lookup Table (XY)
• 3D Lookup Table (/)
Using Characteristics
Similar to time functions, characteristics can also be used to model nonlinear characteristics.
In the electric circuit module, nonlinear characteristics are preferable for the behavioral description
of passive components, static or dynamic behavior of semiconductor devices and
controlled sources. In the block diagram module, the nonlinear transfer behavior of blocks can
be described.
The characteristics are placed in the Tools folder in the «Basics» tab. Select the folder, click
Characteristics, select a component, drag the element onto the sheet and release the mouse
button.
Predefined Characteristics
Predefined characteristics have a quality determined behavior for which certain parameters
can be defined. Predefined characteristics are: Equivalent Line, Exponential Function, Hyperbolic
Function and Polynom of 2nd Order as well Diffusion Capacitance and Junction Capacitance.
User-Defined Characteristics
In addition to the predefined characteristics, SIMPLORER users can define their own characteristic.
The 2D Lookup Table XY create characteristic data pairs which are saved in an external
file or in the simulation sheet.