Add all items together. This is the worst-case maximum DC power dissipated by the circuit if it is bipolar. There is an obvious reduction in the complexity of the steps if the circuit uses only one power supply. Note that BiCMOS arrays still have an overhead current CMOS arrays emphasize AC power components and do not usually have DC components listed When Power is Specified Rather then Current Another variation in the computational method occurs when the macros are individually specified with a power dissipation, i.e., use this macro - dissipate this much power. An overhead component for the bias circuitry may need to be computed and added to the macro sum.
G is the number of gates.
There will be some variation in the form of the equation depending on the use of gates or macros or outputs as the sizing measure. There will be variation depending on the use of a register ratio and there will be variation in the types of macros for which AC power will be computed.