RE: [IBIS-Users] no convergence in dc sweep

Hi ,

     For this you can use below solutions

1)       increase ITL1 (this increase the no.of iterations for getting
operating point so that simulation will proceed) because reducing step
size is not proper as it is limited to 100 points based on the range

2)       if you are facing problem other than 1 st point value (prints
data for few steps of  PAD voltage and stops because of  convergence)
increase ITL2 which is DC transfer curve iterations

3)       instead of giving as entire range say

        .DC  VPAD  -1.8   3.6     0.06

You can print all PAD current steps individually using . RERUN statement
each for each VPAD step value but here some manual work is required.



Regards

Kiran Kumar





________________________________

From: owner-ibis-users@server.eda-stds.org
[mailto:owner-ibis-users@server.eda-stds.org] On Behalf Of Nekkondi,
Hima
Sent: Wednesday, August 02, 2006 2:41 PM
To: ibis-users@server.eda-stds.org; ibis@server.eda-stds.org
Subject: [IBIS-Users] no convergence in dc sweep



hi,



   when i am running the spice simulation for me this eror came



   error  : no convergence in dc sweep curves at  -2.5000



    can any one tell me why  this error came and how to debug.



Regards,

Hima.








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