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calculate the input power from transient simulation

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kadikaram

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Hi, I am using cadence virtuoso. And i want to calculate the input power from transient simulation.., on that simulation i can calculate only transient voltage and current, but i need to calculate total input power from the power supply... Any suggestion pls
 

If the signal sinusoidal, complex current voltage waveforms will give you the average power as in formulae below.

P=0.5*Re{V*conj(I)} or P=0.5*Re{conj(V)*I}
 

Thanks for your reply. This everything i want， because of to calculate single mosfet diode efficiency.
 

kadikaram said:
Hi, I am using cadence virtuoso.
Click to expand...
It is a name of Design Framework.

You don't describe tool name which you use.
https://www.edaboard.com/showthread.php?t=366664#4
Show us followings.

(1) Correct simulator name
(2) Correct post processing tool name


kadikaram said:
And i want to calculate the input power from transient simulation..,
Click to expand...

BigBoss said:
If the signal sinusoidal, complex current voltage waveforms will give you the average power as in formulae below.
P=0.5*Re{V*conj(I)} or P=0.5*Re{conj(V)*I}
Click to expand...
This can not be applicable for your case, since your simulation is Transient Analysis.

kadikaram said:
This everything i want,
because of to calculate single mosfet diode efficiency.
Click to expand...
Can you understand what analysis you use surely.
 

pancho_hideboo said:
It is a name of Design Framework.

You don't describe tool name which you use.
https://www.edaboard.com/showthread.php?t=366664#4
Show us followings.

(1) Correct simulator name
(2) Correct post processing tool name
Click to expand...

Yes, i forgot to mention the tool name on that thread. But after that i found the xval() function usage.



pancho_hideboo said:
This can not be applicable for your case, since your simulation is Transient Analysis.

Can you understand what analysis you use surely.
Click to expand...

May be i am not sure which analysis i have to use, can you give the suggestion to calculate the single mosfet diode efficiency...! for any analysis in cadence virtuoso.
 

Surely show us followings.

(1) Correct simulator name
(2) Correct post processing tool name

"Cadence Virtuoso" is a name of Design Framework.
 

1)virtuoso 6.1.5
2)Virtuoso Analog Design Environment
 

You can not understand what tools you use at all.

kadikaram said:
1)virtuoso 6.1.5
Click to expand...
Such simulator never exists.
Understand correct name of simulator you use.

kadikaram said:
2)Virtuoso Analog Design Environment
Click to expand...
I assume you use Cadence ViVA as post processing.
Is it correct ?

Even if you use Cadence ADE, you can use various simulators on ADE, e.g. HSPICE, eldo, GoldenGate, etc.
 
Last edited:

Answer my question.
pancho_hideboo said:
I assume you use Cadence ViVA as post processing.
Is it correct ?
Click to expand...

kadikaram said:
May be i am not sure which analysis i have to use,
can you give the suggestion to calculate the single mosfet diode efficiency...!
Click to expand...
kadikaram said:
Cadence Spectre
Click to expand...
Use Shooting-Newton-PSS or HB-PSS.
Then apply frequency domain data to the following skill functions for evaluating power.
"spectralPower()" or "pvi()"

"pvi()" is available only in ViVA.
If you don't use ViVA, you have to use "spectralPower()".

If you prefer transient analysis, use skill function "integ()".

About usage of these skill functions, launch skill API Finder from CIW of DFII.
 
Last edited:

pancho_hideboo said:
Use Shooting-Newton-PSS or HB-PSS.
Then apply frequency domain data to the following skill functions for evaluating power.
"spectralPower()" or "pvi()"

"pvi()" is available only in ViVA.
If you don't use ViVA, you have to use "spectralPower()".

If you prefer transient analysis, use skill function "integ()".

About usage of these skill functions, launch skill API Finder from CIW of DFII.
Click to expand...

Thank you and forgive me for my ignorance, I used "pvi()" function. So, that post processing tool is ViVA. Can you elaborate, how to use skill function "integ()" or is there any method to calculate input power from sine wave power supply. Just i want to calculate the efficiency of single diode mosfet rectifier. Output power i know P=V*I, but input power.. from the transient analysis...?
 

kadikaram said:
how to use skill function "integ()"
Click to expand...
Launch skill API Finder from CIW of DFII.

kadikaram said:
Output power i know P=V*I, but input power.. from the transient analysis...?
Click to expand...
Evaluation of input power is same as output power.

BTW, "V*I" from transient analysis is an instantaneous power.
On the other hand, "pvi()" from PSS analysis is a averaged power over one fundamental period.

Do you surely require to evaluate instantaneous power ?
 

not must to evaluate instantaneous power from transient analysis, but i am not sure about "PSS analysis input power calculation" in Vsin - power supply.
 

kadikaram said:
not must to evaluate instantaneous power from transient analysis
Click to expand...
Evaluate following.
integ(V*I)/T, where T is a one period.

Note:"pvi()" give averaged power regarding only one specific tone.
On the other hand, "integ(V*I)/T" give averaged power including all harmonics.

So if DUT is highly nonlinear, "pvi()" could be different from "integ(V*I)/T".
 

which means, the "pvi()" method power calculation is more accurate when we set the more harmonics in PSS simulation.
 

kadikaram said:
which means, the "pvi()" method power calculation is more accurate when we set the more harmonics in PSS simulation.
Click to expand...
I can not understand what you want to mean at all ?
Describe sentences with correct grammer.

And can you surerly understand "pvi()" ?

It seems you can not learn anything from your previous threads at all.
 

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