Adding
Third-Party Models to LTspiceIV
Overview:
Guide will explain how to add third-party models, such as MOSFETs, to
circuits in LTspice
Additional Help:
Adding
Third- Party Models
Generally,
there are two types of third-party models: subcircuit and model. You
can tell by looking at the .lib file. The left is a subcircuit and the
right is a model
For model files, after placing the device in the circuit, ctrl + right
click the symbol. A menu will pop up
The
prefix should remain as default, which should correspond to the type of
device (MN for NMOS, MP for PMOS, D for Diode, etc...). The value
should be changed to the name of the third party model, which is the
name after the ".MODEL" in the .lib file.
After,
add a Spice directive and type ".inc filename.lib". For our
example, it would be ".inc IXTH11P50". In order for this to work, the
.lib file must be in the same directory as the circuit file.
For subcircuit files, the process is the same, except the prefix is
changed to X.
Reliable
third-party model files are hard to find. Try to grab model files from
the manufacturer's website. Also, double check the model files by
simulating one of the graphs given at the end of the corresponding
datasheet.
Updated:
06/27/2014
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