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Advise for quick transient simulation to capture system power-up (Read 1756 times)

Dipankar

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Advise for quick transient simulation to capture system power-up
Jul 10^th, 2009, 7:52pm

Dera ALL,
I am simulating a system power-up scenario where the system takes ~180 us to wake up using spectre tran. I need to simulate upto ~250 us to properly monitor the ringing etc. Now I set maxstep=20 ns as my design has a oscillator which generates a 3MHz clock. This slows up the simulation during 0-180us. Is any way around possible ? I did not use 'convergence aid' because during post-sim with calibre-extracted view I can't do the 'nodeset' or 'ic' at the proper node which is not at the top.

With Thanks and Regards,
Dipankar.

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Andrew Beckett

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Re: Advise for �quick �transient simulation to capture system power-up
Reply #1 - Jul 13^th, 2009, 1:41am

Did you need to set maxstep?

One other idea is to use envlp - this can work with autonomous circuits, and can be used to speed up the simulation of startup behaviour of circuits.

Or look at using Spectre Turbo or APS (if the circuit is big enough, this could really be beneficial).

Regards,

Andrew.

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