Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

pspice convergence problems

Status
Not open for further replies.

epp

Full Member level 5
Joined
Mar 4, 2004
Messages
243
Helped
12
Reputation
24
Reaction score
4
Trophy points
1,298
Activity points
1,847
Hi!
I need some information on how to solve convergence problems (time step too small) when I'm simulating power electronics systems which include analog parts, D latches and ABM parts. Also I have large currents and voltages to simulate at 70 kHz. I already read material from orcad's site, changed some settings in simulator and still have problems.
If exists some guide for simulating power ele in pspice let me know.
Thanks.
 

Hi,

If you are using transformers or capacitors inside your schematic, try to add large value resistors, lets say 10E7 ohms, between primary and secondary windings of transformers or between capacitors pins.
 

from simulation settings->options
change RELTOL value (with x10 or /10).
don't use a component which has very low value if it is not necessary.
 

you can also try "autoconvergance: in PSpice. This is new enhancement done a while ago PSpice. This will save you from hassle of tweaking the parameter.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top