Include entire file - what am I doing wrong

QSPICE
1

Hi all,

I have models which consist of more than one SUBCKT. I read in the forum before to click “Include Entire File” which makes sense. I do that, and still get “Fatal error: no such subcircuit: ****”.

Here is one example, a simple Varistor model from the TDK website with SUBCKT:

.SUBCKT SIOV 1 2 PARAMS: T=1 C=1pF L=1nH B1=1 B2=1 B3=0 B4=0
R_SERIES 1 3 100u
L_SERIES 3 4 {L}
V_I_SENSE 4 5 0V
H_I_SENSE 6 0 V_I_SENSE 10k
R_I_SENSE 6 0 1G
E_VAR 5 2 VALUE={T*( PWR(10, B1+B2*(LOG10(LIMIT(V(6),1m,100G))-4)+B3EXP(-LOG10(LIMIT(V(6),1m,100G))+4)+B4EXP(LOG10(LIMIT(V(6),1m,100G))-4) ) -PWR(10, B1+B2*(LOG10(-LIMIT(V(6),-100G,-1m))-4)+B3EXP(-LOG10(-LIMIT(V(6),-100G,-1m))+4)+B4EXP(LOG10(-LIMIT(V(6),-100G,-1m))-4) ) +LIMIT((V(6)1kV(7)),-V(7),V(7)) )}
C_PAR 4 2 {C}
E_SW 7 0 VALUE={PWR(10,(B1+B2*(-7)+B3EXP(+7)+B4EXP(-7)))}
R_SW 7 0 1G
.ENDS

.SUBCKT S07K25 1 2 PARAMS: TOL=0
X1 1 2 SIOV PARAMS: T={1+TOL/100} C=1400pF L=10.0nH B1=1.7865297 B2=0.0618059 B3=-0.0005573 B4=0.0229985
.ENDS

I copy & paste that into QSPICE, it asks me which Subcircuit, I chose S07K25, click include entire file. When I simulate I get “Fatal error: No such subcircuit: SIOV”.

In the Symbol properties ‘Library File’ entry, the whole text is there with both SUBCKTs.
I also tried putting the model in a .lib file and give the path in the ‘library file’ entry, but i wont find the file, no matter where I put it.

I do get it to work if I paste the SUBCKT that QSPICE finds lacking when I put it in as a text directive like this:

image
image729×443 53.1 KB

But if I start doing that for my whole project the schematic will become a huge mess.

Any tips what I am doing wrong here ? Maybe some preferences not set properly or something ?

I have installed QSPICE as ‘user’ because I dont have admin rights on my job computer, maybe that is the problem ?

2

.subckt S07K25 is the device, .subckt SIOV is it dependent sbuckt

If you need to use autogenerate symbol, rearrange your netlist with S07K25 subkt in front of SIOV subckt. In autogenerate symbol, select S07K25, include entire file.

3

Thank you very much KSKelvin, that worked perfectly and taught me an important piece of knowledge about SPICE that I did not know.

4

Well, if you use .lib directive to link the symbol with this library / netlist, this action is not required. Only if you use Qspice autogenerate symbol feature, you have to manually arrange your library.

1 Like
5

I tried this just now, you mean to set the path in the Symbol Properties → Library File ? It worked well. Will do so from now on, I can get a much better library that way I think. Thank you very much !