Hi, I'm having a convergence issues in my circuit and I'm geeting a lot of convergence errors in my output file, for example:
ERROR -- Convergence problem in transient bias point calculation
Last node voltages tried were:
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
(DATA+) 16.8080 (N00167) 16.8080 (N00268) 12.3270 (N00272) 13.5340
(N00341) 16.5800 (N00395) 3.3617 (N00402) .0186 (N00473) -3.3617
(N00557) 2.4606 (N00564) 2.4606 (N00640) 3.4641 (N00882) 2.4606
(N01728) 12.1790 (X_U2.E) 12.3270 (X_U3.3) -1.8741 (X_U4.3) .5865
(COMMON1) 16.8080 (N000482) 3.3617
(N000483) -3.3617 (N000892) 3.3617
(N011120) .2037 (X_U1A.3) 16.6940
(X_U1A.4) 17.1440 (X_U1A.5) -.9254
(X_U1A.6) -.9416 (X_U1A.7) 17.1420
(X_U1A.8) 17.1440 (X_U1A.9) 16.8080
(X_U1B.3) 1.2396 (X_U1B.4)-774.1E-06
My question is, what am I looking at? There are some nodes that i recognize by name, but I don't know how to adress the nodes that are coming out from the component U1A, how can I tell which nodes relate to, for example, (X_U1B.3) (in the last row)? And how can I extract what's wrong with this specific node? The voltages that are written here looks fine to me.
How can I extract valuble infromation from it?
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Convergence is one of the most headache is SPICE simulation. Here are a few recommends to improve your convergence issue
1) Simplify your circuit as much as possible.
2) Reduce the time step
3) Pspice latest version also has feature to improve the convergence
4) Use Nodeset Initial Condition
There is a convergence error when trying to combine two or more keywords into a single sentence. The result is often a sentence that is too long or contains too many words.
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The convergence error in an output file usually refers to an error in the solution of a numerical simulation or optimization. To read the convergence fnf game error, you should first locate the section of the output file where the simulation or optimization results are reported. The specific location and format of this section can vary depending on the software used to run the simulation or optimization.
Convergence is one of the most headache is SPICE simulation.
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