How to do the power analysis in ICFB?

[bluestatic]

I was using ICFB to design a differential amp, now I'm trying to estimate the worst case power consumption of this circuit, which will be used to estimation overall power consumption in full chip.

I've done the transient simulation on the current of each power supply(3.3V 1.8V etc), but there is always current spike during transistor switching, the current wary from 1mA to 20mA at this time. So most of the time the current is flat, with some "peak" during switching time.

I guess the "power dissipition" of this circuit should be a average value, right? In that case how can I calculate the power consumption?

 

[Hughes]

You can use Analog Artist's calculator to calculate the average value. Alternatively, you can add a expression to the output list ( Outputs / Setup ):
Name can be anything
expression is
average(IT("/V1/PLUS"))

Replace V1 to the instance name of the voltage source to drive the power supply, please.

 

[dwang_w]

in the simulation option,you can set the power option