Switching Power in CMOS Calculator

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✖The positive voltage is usually called V_dd or power supply of the circuit. Using positive logic, the Boolean value of logic 1 is represented by V_dd .ⓘ Positive Voltage [V_dd]			+10% -10%
✖Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second.ⓘ Frequency [f]			+10% -10%
✖Capacitance is the ratio of the amount of electric charge stored on a conductor to a difference in electric potential.ⓘ Capacitance [C]			+10% -10%

✖Switching Power is called the dynamic power because it arises from the switching of the load.ⓘ Switching Power in CMOS [P_switching]

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Formula

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Switching Power in CMOS

Formula

`"P"_{"swit"chi"ng"} = ("V"_{"dd"}^2)*"f"*"C"`

Example

`"6.79728mW"=(("0.68V")^2)*"3.5GHz"*"4.2pF"`

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Switching Power in CMOS Solution

STEP 0: Pre-Calculation Summary

Formula Used

Switching Power = (Positive Voltage^2)*Frequency*Capacitance
P_switching = (V_dd^2)*f*C
This formula uses 4 Variables

Variables Used

Switching Power - (Measured in Watt) - Switching Power is called the dynamic power because it arises from the switching of the load.
Positive Voltage - (Measured in Volt) - The positive voltage is usually called V_dd or power supply of the circuit. Using positive logic, the Boolean value of logic 1 is represented by V_dd .
Frequency - (Measured in Hertz) - Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second.
Capacitance - (Measured in Farad) - Capacitance is the ratio of the amount of electric charge stored on a conductor to a difference in electric potential.

STEP 1: Convert Input(s) to Base Unit

Positive Voltage: 0.68 Volt --> 0.68 Volt No Conversion Required
Frequency: 3.5 Gigahertz --> 3500000000 Hertz (Check conversion here)
Capacitance: 4.2 Picofarad --> 4.2E-12 Farad (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_switching = (V_dd^2)*f*C --> (0.68^2)*3500000000*4.2E-12

Evaluating ... ...

P_switching = 0.00679728

STEP 3: Convert Result to Output's Unit

0.00679728 Watt -->6.79728 Milliwatt (Check conversion here)

FINAL ANSWER

6.79728 Milliwatt <-- Switching Power

(Calculation completed in 00.004 seconds)

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Credits

Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

Shobhit Dimri has created this Calculator and 900+ more calculators!

Verified by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has verified this Calculator and 2100+ more calculators!

< 13 Fundamental Parameters Calculators

Built-in Potential

Go Built-in Potential = Thermal Voltage*ln((Acceptor Concentration*Donor Concentration)/(Intrinsic Electron Concentration^2))

Power Supply Rejection Ratio

Go Power Supply Rejection Ratio = 20*log10(Input Voltage Ripple/Output Voltage Ripple)

Switching Power in CMOS

Go Switching Power = (Positive Voltage^2)*Frequency*Capacitance

Scaled Drain Current of MOSFET

Go Drain Current of Scaled MOSFET = Drain Current of MOSFET/Scaling Factor of MOSFET

Oxide Capacitance of Scaled MOSFET

Go Scaled MOSFET Capacitance of Oxide = Oxide Capacitance/Scaling Factor of MOSFET

Capacitance Onpath

Go Capacitance Onpath = Total Capacitance Seen by a Stage-Capacitance Offpath

Total Capacitance Seen by Stage

Go Total Capacitance Seen by a Stage = Capacitance Onpath+Capacitance Offpath

Capacitance Offpath

Go Capacitance Offpath = Total Capacitance Seen by a Stage-Capacitance Onpath

Input Capacitance of Gate

Go Input Capacitance = Drive of Arbitrary Gate*Logical Effort

Output Clock Phase

Go Output Clock Phase = 2*3.14*VCO Control Voltage*VCO Gain

Capacitance of External Load

Go Capacitance of External Load = Fanout*Input Capacitance

Static Current

Go Static Current = Static Power/Drain Voltage

Static Power Dissipation

Go Static Power = Static Current*Drain Voltage

Switching Power in CMOS Formula

Switching Power = (Positive Voltage^2)*Frequency*Capacitance
P_switching = (V_dd^2)*f*C

What is static and dynamic power in VLSI?

Static power is power consumed while there is no circuit activity. For example, the power consumed by a D flip-flop when neither the clock nor the D input have active inputs (i.e., all inputs are "static" because they are at fixed dc levels). Dynamic power is power consumed while the inputs are active.

How to Calculate Switching Power in CMOS?

Switching Power in CMOS calculator uses Switching Power = (Positive Voltage^2)*Frequency*Capacitance to calculate the Switching Power, Switching Power in CMOS formula is defined as energy that is required to charge and discharge the load capacitance. This is called dynamic power because it is consumed when the circuit is actively switching. Switching Power is denoted by P_switching symbol.

How to calculate Switching Power in CMOS using this online calculator? To use this online calculator for Switching Power in CMOS, enter Positive Voltage (V_dd), Frequency (f) & Capacitance (C) and hit the calculate button. Here is how the Switching Power in CMOS calculation can be explained with given input values -> 6.79728 = (0.68^2)*3500000000*4.2E-12.

FAQ

What is Switching Power in CMOS?

Switching Power in CMOS formula is defined as energy that is required to charge and discharge the load capacitance. This is called dynamic power because it is consumed when the circuit is actively switching and is represented as P_switching = (V_dd^2)*f*C or Switching Power = (Positive Voltage^2)*Frequency*Capacitance. The positive voltage is usually called V_dd or power supply of the circuit. Using positive logic, the Boolean value of logic 1 is represented by V_dd , Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second & Capacitance is the ratio of the amount of electric charge stored on a conductor to a difference in electric potential.

How to calculate Switching Power in CMOS?

Switching Power in CMOS formula is defined as energy that is required to charge and discharge the load capacitance. This is called dynamic power because it is consumed when the circuit is actively switching is calculated using Switching Power = (Positive Voltage^2)*Frequency*Capacitance. To calculate Switching Power in CMOS, you need Positive Voltage (V_dd), Frequency (f) & Capacitance (C). With our tool, you need to enter the respective value for Positive Voltage, Frequency & Capacitance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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