SPICE models cannot be used directly in the SIMPLIS simulator and, therefore, must be converted through the built-in algorithms. Currently, MOSFETs, Diodes, BJTs, IGBTs, JFETs, and Schottky and Zener diodes are supported.
The process of installing third-party SPICE models requires an association between the electrical definition of the device and the pictorial representation of that device. Although the model provides an electrical description of the device, the model does not specify the schematic symbol nor the category in the model library. Two scenarios are possible:
To resolve the issue when a device is implemented as a subcircuit in a .SUBCKT definition, the SIMetrix software includes a database of known part numbers with a named schematic symbol, a model-library category and, if relevant, a pin mapping order. The following explains what happens under various conditions:
The model-library category and symbol name associations can be embedded in the model definition by editing the model-library file in a text editor. You can add a single line after each .SUBCKT line to identify the model-library category and the symbol name for the subcircuit definition . For example, the model file included with this topic has the information embedded as follows for the third model that you will install in the next section:
.SUBCKT example_model_3 1 2 3 *#ASSOC Category=NMOS Symbol=nmos_sub ... model definition lines ... .ENDS
Frequently, the automatic association is the most convenient method; however, for associating a large number of models, the embedded association can save time.
Table 1 lists commonly installed models, the corresponding model-library category and symbol name as well as the appropriate entry to add to the model file.
|Model Type||Model Library Category||Symbol||Embedded Association Line|
|N-Channel MOSFET||NMOS||NMOS 3 Terminal||*#ASSOC Category=NMOS Symbol=nmos_sub|
|P-Channel MOSFET||PMOS||PMOS 3 Terminal||*#ASSOC Category=PMOS Symbol=pmos_sub|
|NPN Bipolar Transistor||NPN||NPN||*#ASSOC Category=NPN Symbol=npn|
|PNP Bipolar Transistor||PNP||PNP||*#ASSOC Category=PNP Symbol=pnp|
|Diodes||Diodes||Junction Diode||*#ASSOC Category=Diode Symbol=dio|
|Schottky Diodes||Schottky Diodes||Schottky||*#ASSOC Category="Schottky Diodes" Symbol=diode_schottky|
|Zener Diodes||Zeners||Zener||*#ASSOC Category=Zeners Symbol=zener_s|
|N-Channel JFET||N-Channel JFET||N-Channel JFET||*#ASSOC Category="N-Channel JFET" Symbol=njfet|
|P-Channel JFET||P-Channel JFET||P-Channel JFET||*#ASSOC Category=P-Channel JFET" Symbol=pjfet|
|N-Channel GaN MOSFET||N-Channel JFET||N-Channel JFET||*#ASSOC Category="N-Channel JFET" Symbol=njfet|
|P-Channel GaN MOSFET||P-Channel JFET||P-Channel JFET||*#ASSOC Category="P-Channel JFET" Symbol=pjfet|
|Insulated Gate Bipolar Transistor||IGBTs||IGBT||*#ASSOC Category=IGBTs Symbol=igbt_with_diode|