Semiconductor Subcircuit generation from LTspice tool

Good afternoon,

Trying to incorporate a semiconductor trough out the "ee.spice.semiconductorSubcircuit2lookup" funtion and by using the SPICEtool "LTspice" incorporated in Matlab2023a, the system is unable to find the simulator.

%% Generate lookup table data for three-terminal or 3-terminal devices from SPICE subcircuit

subcircuitFile = [matlabroot '\toolbox\physmod\elec\eedemos\applications\devicecharacteristics\ISC030N10NM6.lib'];

subcircuitName = "ISC030N10NM6_L1";

SPICEPath = "C:\Program Files\LTC\LTspiceXVII\XVIIx64.exe";

SPICETool = "LTspice";

lookuptable = ...

ee.spice.semiconductorSubcircuit2lookup(SPICETool,subcircuitFile, ...

subcircuitName, 'SPICEPath', SPICEPath, 'terminals', [1,2,3], ...

'flagIdsVgs', 0, 'flagIdsVds', 1, 'T', 27);

The error is the following:

Error using ee.internal.spice.lookuptable.generateSemiconductorNetlist

Unable to find LTspice.

Error in ee.internal.spice.lookuptable.subcircuitGeneratelookup

Error in ee.internal.spice.lookuptable.semiconductorSubcircuit2lookup

Error in ee.spice.semiconductorSubcircuit2lookup

Is this a stable funtion to use with LTSpice or is it still ongoing?

Thank you in advance,

José Miguel.

Answer 1

[Keshav]

‘SPICETool’ is a name-value argument in the ‘ee.spice.semiconductorSubcircuit2lookup’ function. Therefore, in the function call, you need to provide the name before passing the value as 'LTspice'. You can look at the function call below for reference.

lookuptable = ...
ee.spice.semiconductorSubcircuit2lookup(subcircuitFile, ...
    subcircuitName,'SPICETool',SPICETool, 'SPICEPath', SPICEPath, 'terminals',  [1,2,3], ...
    'flagIdsVgs', 0,  'flagIdsVds', 1, 'T', 27);

You can read more about this function in the below MathWorks documentation of ‘ee.spice.semiconductorSubcircuit2lookup’

https://in.mathworks.com/help/sps/ref/ee.spice.semiconductorsubcircuit2lookup.html

[José Miguel Sanz Alcaine]

Hello, this worked and MATLAB got "busy" generating the different Temp files of .net and .log. However at some point, after few minutes, it fails giving the following warnings and errors:

Warning: .ac analysis fails. Use .tran to extract capacitance characteristics.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs-5.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs-4.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs-3.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs-2.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs-1.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs0.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs1.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs2.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs3.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs4.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs5.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs6.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs7.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs8.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs9.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs10.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs11.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs12.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs13.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs14.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs15.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs16.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs17.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs18.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs19.net

already exists.

Warning: Netlist

C:\Users\Miguel\AppData\Local\Temp\tp0a8614aa_4236_43db_a6d5_de346ec5b25a\ISC030N10NM6_L1_Capacitance_Vgs20.net

already exists.

Error using ee.internal.spice.runSIMetrix

Set the correct path of the SIMetrix executable.

Error in ee.internal.spice.runSIMetrix

Error in ee.internal.spice.lookuptable.subcircuitGeneratelookup/runSPICE

Error in ee.internal.spice.lookuptable.subcircuitGeneratelookup/getLookupTable

Error in ee.internal.spice.lookuptable.semiconductorSubcircuit2lookup

Error in ee.spice.semiconductorSubcircuit2lookup

Error in main (line 9)

ee.spice.semiconductorSubcircuit2lookup(subcircuitFile, ...

All these without me having any SImetrix sofware installed. My code is:

subcircuitFile = [matlabroot '\toolbox\physmod\elec\eedemos\applications\devicecharacteristics\ISC030N10NM6.lib'];

subcircuitName = "ISC030N10NM6_L1";

SPICEPath = "C:\Program Files\LTC\LTspiceXVII\XVIIx64.exe";

SPICETool = 'LTspice';

lookuptable2 = ...

ee.spice.semiconductorSubcircuit2lookup(subcircuitFile, ...

subcircuitName,'SPICETool',SPICETool, 'SPICEPath', SPICEPath, 'terminals', [1,2,3], ...

'flagIdsVgs', 0, 'flagIdsVds', 1, 'T', 25);

and the .lib is attached. Any solution?

Thanks in advance,

José Miguel.