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I've been trying to run smoke analysis on my design for a while. I've managed to run it on active devices (FETs and diodes), but it refuses to run on passive components - subcircuit based .lib files. For example I have an inductor with the following model:
.subckt ind_reg0 1 2
L1 1 3 10e-6
R1 3 2 0.3
I also added the following definition to device property file:
( SYMBOL_NAME "inductor" )
( MODEL_TYPE 2 )
When I run smoke analysis (after transient) I get the "non-fatal error: Current data not found for Smoke test LI" I've verified that I check "All" in data collection options. I also tried updating node names in pre-smoke section of template property file. But nothing helped.
Does anyone have an idea how to run smoke analysis on subcircuit based passives?
Thanks in advance for you help!
In reply to oldmouldy:
I tried using passives from analog.lib: a source and L and R. I saw that both parts have already some properties deifned as variables: for example inductor has CURRENT property with value set to LMAX. I ran smoke and somehow it already had some ratings specified for the resistor, but not for the inductor. I tried defining variables with PARAM part, but it didn't change anything.
How these variables (LMAX,DSMAX,RMAX etc) should be specified to be passed to Smoke analysis as ratings?
In reply to tt543:
First, thank you for your help.
I added the Variables part. And yet it doesn't work for inductor. I could get smoke analysis for a resistor (PDM, TB and RV) and a capacitor (CV and CI), but nothing for an inductor. Also, for some reason the resistor PDM gets 0% derating all the time, and I didn't specify it.
I have also one additional question. How can I use resistors and capacitors having only symbol definition (.olb) in smoke analysis. I know that pspice somehow recognizes such parts (once the value is specified) and can simulate it. These components also have RMAX/CMAX etc attributes assigned automaticaly. But once I run the Smoke analysis, it skips these parts.
In reply to alokt:
What do you mean by "L" part from AWB? Is there AWB library? I couldn't find that one.
Is there a way to replace all the resistors/capacitors in a schematic to point to another library (not one by one)?
It is analog not AWB. You can use "Replace Cache" feature to replace all instances of a part in schematic with another library component. Go to project Manager, Expand Design Cache, Select part which you would like to replace, Do RMB and select "Replace Cache" and provide necessary input in dialog.
I tried again the "L" part from analog library and it didn't do anything during the smoke analysis - I mean the summary table didn't show it. But when I looked into the smoke.log file I found the following lines:
Reference Designator = L1
The following parameter(s) exceeded the
Maximum Operating Value(s) specified
LI ( PEAK AVG RMS )
Seems that it did run smoke analysis on the inductor, but doesn't display it in the results. Do you know how to make it show the inductor in the summary table?
Please check if you have any visibility filters turned on. There are two possible filters 1. Component Filter 2. Parameter Filter. Do RMB and check the status of these filter options.
These two may hide a component or a set of specific test for a component from result table. I can not think of any other reason if log file indicate that component is tested.