Hello all,
I need to model noise on a high-side plane (feeding several SMPS).
I will extract a plane model but for the freq/time domain simulation...
My 2 challenges I can see are:
1) ferrite SMT model ...
but I see the si-list archive on this. They were nixed on the pcb respin,
anyway, but need to model their usage.
2) behavioral noise source that emulates SMPS constant-pwr current.
I don't need to model a particular part. Vendor models, I'm told, don't
operate at the pwm switching level, anyway.
My sense is that I only need a behavioral model that will act like
"constant power", so it simply switches current in and out and adjusts
voltage in lock step, like a buck SMPS. I'm thinking a pwl file for a
current waveform then a ICVS across it, parametrized to achieve constant
power.
Comments? And, if agreed, suggestions on common elements to do this?
Regards,
Reid
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