|25th May 2004, 08:45 PM||#31|
Join Date: Dec 2003
Great, if you want my files just send me your mail adress.
To get my simulation running, please keep the following thing in mind.
The standard Ron for the switches is 1 Ohm, don't forget to adjust them.
Default values in the options of the simualtion profile will not work,
because of convergence issues!
Changing the options for the simulation routine itself is sometimes critical as nearly nobody is able to foresee all the effects, which can be caused.... well, at least I am not a "GOD of Numeric Math" ....
But a very good way to get rid of 90% of all convergence issues is to allow a higher number of iterations before the simulation is aborted.
In the options of the simulation profile you will find a value which is called "ITL4". The default value here is 10 iterations, as most simualtions show very fast convergence. But especially for switching applications the SPICE algorithms often need more iterations.
If you set this value to 100, then this simulation should work.
May be my files, which I can send to you, are already including the increased ITL4 setting for this specific project...
But the Ron value of the Sbreak is given in the Sbreak.lib and you should have look to this.
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