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SwitcherCAD™ III is a high performance Spice III
simulator that simplifies the design of switching regulators. The
software is provided free by Linear Technology at this web address:
http://www.linear.com/designtools/spice_models.jsp
SwitcherCAD III includes a library of models for a
limited number of Coilcraft inductor models. This library file is called
“CCI2005” and is updated periodically.
Coilcraft also offers a larger (1400+) and more
current selection of SwitcherCAD III models that can be downloaded
below. These are the most up-to-date versions and include models for
many of our newest products, which are not in the file posted on the
Linear Technology web site.
For convenience, the models are organized into smaller libraries that
cover similar product families. Or you can download a single large file
with all available models.
Library files for download
Using Coilcraft model libraries
Model construction
Right-click on the desired file(s) and save it to the SwitcherCAD III
component library on your computer. The path will typically be
C:\Program Files\LTC\SwCADIII\lib\cmp.
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CCI_All.ind |
Includes all of the models below |
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CCI_Chip.ind |
Chip inductors
0603PS, 0805PS, 1008PS, 1812PS
0603LS, 0805LS, 1008LS, 1812LS |
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CCI_High_Current.ind |
SM high current power inductors
HCT, MLC, MVR, SER, SLC |
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CCI_Low_Profile.ind |
SM low profile power inductors
LPO, LPS |
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CCI_Shielded.ind |
SM shielded power inductors
DS, DT, DH, MOS, MSS |
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CCI_Unshielded.ind |
SM unshielded power inductors
DO, ME, SD |
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CCI_Through_Hole.ind |
Leaded RF and power inductors
132, 90, DC1012, DR, PCH, PCV, RFB |
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CCI_2005.ind |
Latest library provided to Linear |
Using Coilcraft model libraries
To access the desired Coilcraft library and leave the standard library
as the default Use SwCADIII* to create the schematic as you would like it.
Click on the “Open” icon on the tool bar, then click on the folder
labeled “lib”, then the folder labeled “cmp”, then the desired “CCI
xxxxx.ind” file. Minimize the opened library file.
Right-click on the inductor you want to modify. In the box that pops up,
click on “Select Inductor” and pick the desired Coilcraft inductor. If
it is not in this view, click on “Select All Inductors
in Database”.
To automatically be asked which library to use
Go to “C:\Program Files\LTC\SwCADIII\lib\cmp”. Rename the standard library “standard.ind” to something else (LT
standard.lib for example).
Use SwCADIII to create the schematic as you would like it.
Right-click on the inductor
you want to modify. In the dialog box, click on “Select Inductor”
to see the available component libraries, pick the one you want to use,
then select the desired inductor model.
To make a Coilcraft library the default library
Go to “C:\Program Files\LTC\SwCADIII\lib\cmp”. Rename the standard
library “standard.ind” to something else (LTC standard.lib for example). Rename the selected Coilcraft library “standard.ind”
Use SwCADIII* to create the schematic as you would like it.
When you right-click on the inductor, you will
see a box that allows
you to edit the inductor. Click on “Select Inductor” to open the
list of Coilcraft models and select the one to use.
Model construction
The schematic below is the model structure used in SwitcherCAD III.
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