Switching Point Voltage Calculator

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✖Supply Voltage refers to the voltage level provided to power an electronic circuit or device.ⓘ Supply Voltage [V_dd]			+10% -10%
✖PMOS Threshold Voltage is a critical parameter that defines the voltage level at which the transistor begins to conduct current.ⓘ PMOS Threshold Voltage [V_tp]			+10% -10%
✖NMOS Threshold Voltage is a critical parameter that determines the gate-source voltage at which the transistor begins to conduct current.ⓘ NMOS Threshold Voltage [V_tn]			+10% -10%
✖NMOS Transistor Gain is a measure of how much the output current changes in response to a small change in the input voltage.ⓘ NMOS Transistor Gain [β_n]			+10% -10%
✖PMOS Transistor Gain is a measure of how much the output current changes in response to a small change in the input voltage.ⓘ PMOS Transistor Gain [β_p]			+10% -10%

✖Switching Point Voltage refers to the gate-source voltage (Vgs) at which the MOSFET transitions from its off-state to its on-state or vice versa.ⓘ Switching Point Voltage [V_s]

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Formula

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Switching Point Voltage

Formula

`"V"_{"s"} = ("V"_{"dd"}+"V"_{"tp"}+"V"_{"tn"}*sqrt("β"_{"n"}/"β"_{"p"}))/(1+sqrt("β"_{"n"}/"β"_{"p"}))`

Example

`"19.15938V"=("6.3V"+"3.14V"+"25V"*sqrt("18"/"6.5"))/(1+sqrt("18"/"6.5"))`

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Switching Point Voltage Solution

STEP 0: Pre-Calculation Summary

Formula Used

Switching Point Voltage = (Supply Voltage+PMOS Threshold Voltage+NMOS Threshold Voltage*sqrt(NMOS Transistor Gain/PMOS Transistor Gain))/(1+sqrt(NMOS Transistor Gain/PMOS Transistor Gain))
V_s = (V_dd+V_tp+V_tn*sqrt(β_n/β_p))/(1+sqrt(β_n/β_p))
This formula uses 1 Functions, 6 Variables

Functions Used

sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)

Variables Used

Switching Point Voltage - (Measured in Volt) - Switching Point Voltage refers to the gate-source voltage (Vgs) at which the MOSFET transitions from its off-state to its on-state or vice versa.
Supply Voltage - (Measured in Volt) - Supply Voltage refers to the voltage level provided to power an electronic circuit or device.
PMOS Threshold Voltage - (Measured in Volt) - PMOS Threshold Voltage is a critical parameter that defines the voltage level at which the transistor begins to conduct current.
NMOS Threshold Voltage - (Measured in Volt) - NMOS Threshold Voltage is a critical parameter that determines the gate-source voltage at which the transistor begins to conduct current.
NMOS Transistor Gain - NMOS Transistor Gain is a measure of how much the output current changes in response to a small change in the input voltage.
PMOS Transistor Gain - PMOS Transistor Gain is a measure of how much the output current changes in response to a small change in the input voltage.

STEP 1: Convert Input(s) to Base Unit

Supply Voltage: 6.3 Volt --> 6.3 Volt No Conversion Required
PMOS Threshold Voltage: 3.14 Volt --> 3.14 Volt No Conversion Required
NMOS Threshold Voltage: 25 Volt --> 25 Volt No Conversion Required
NMOS Transistor Gain: 18 --> No Conversion Required
PMOS Transistor Gain: 6.5 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V_s = (V_dd+V_tp+V_tn*sqrt(β_n/β_p))/(1+sqrt(β_n/β_p)) --> (6.3+3.14+25*sqrt(18/6.5))/(1+sqrt(18/6.5))

Evaluating ... ...

V_s = 19.1593796922905

STEP 3: Convert Result to Output's Unit

19.1593796922905 Volt --> No Conversion Required

FINAL ANSWER

19.1593796922905 ≈ 19.15938 Volt <-- Switching Point Voltage

(Calculation completed in 00.007 seconds)

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Created by banuprakash

Dayananda Sagar College of Engineering (DSCE), Bangalore

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Verified by Santhosh Yadav

Dayananda Sagar College Of Engineering (DSCE), Banglore

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< 15 MOS IC Fabrication Calculators

Switching Point Voltage

Go Switching Point Voltage = (Supply Voltage+PMOS Threshold Voltage+NMOS Threshold Voltage*sqrt(NMOS Transistor Gain/PMOS Transistor Gain))/(1+sqrt(NMOS Transistor Gain/PMOS Transistor Gain))

Body Effect in MOSFET

Go Threshold Voltage with Substrate = Threshold Voltage with Zero Body Bias+Body Effect Parameter*(sqrt(2*Bulk Fermi Potential+Voltage Applied to Body)-sqrt(2*Bulk Fermi Potential))

Donor Dopant Concentration

Go Donor Dopant Concentration = (Saturation Current*Transistor's Length)/([Charge-e]*Transistor's Width*Electron Mobility*Depletion Layer Capacitance)

Acceptor Dopant Concentration

Go Acceptor Dopant Concentration = 1/(2*pi*Transistor's Length*Transistor's Width*[Charge-e]*Hole Mobility*Depletion Layer Capacitance)

Drain Current of MOSFET at Saturation Region

Go Drain Current = Transconductance Parameter/2*(Gate Source Voltage-Threshold Voltage with Zero Body Bias)^2*(1+Channel Length Modulation Factor*Drain Source Voltage)

Maximum Dopant Concentration

Go Maximum Dopant Concentration = Reference Concentration*exp(-Activation Energy for Solid Solubility/([BoltZ]*Absolute Temperature))

Propagation Time

Go Propagation Time = 0.7*Number of Pass Transistors*((Number of Pass Transistors+1)/2)*Resistance in MOSFET*Load Capacitance

Drift Current Density due to Free Electrons

Go Drift Current Density due to Electrons = [Charge-e]*Electron Concentration*Electron Mobility*Electric Field Intensity

Drift Current Density due to Holes

Go Drift Current Density due to Holes = [Charge-e]*Hole Concentration*Hole Mobility*Electric Field Intensity

Channel Resistance

Go Channel Resistance = Transistor's Length/Transistor's Width*1/(Electron Mobility*Carrier Density)

MOSFET Unity-Gain Frequency

Go Unity Gain Frequency in MOSFET = Transconductance in MOSFET/(Gate Source Capacitance+Gate Drain Capacitance)

Critical Dimension

Go Critical Dimension = Process Dependent Constant*Wavelength in Photolithography/Numerical Aperture

Depth of Focus

Go Depth of Focus = Proportionality Factor*Wavelength in Photolithography/(Numerical Aperture^2)

Die Per Wafer

Go Die Per Wafer = (pi*Wafer Diameter^2)/(4*Size of Each Die)

Equivalent Oxide Thickness

Go Equivalent Oxide Thickness = Thickness of Material*(3.9/Dielectric Constant of Material)

Switching Point Voltage Formula

Why is the switching point voltage important?

The switching point voltage is crucial because it determines when the MOSFET turns on and off. It influences the timing and efficiency of electronic circuits that use MOSFETs for switching applications.

How to Calculate Switching Point Voltage?

Switching Point Voltage calculator uses Switching Point Voltage = (Supply Voltage+PMOS Threshold Voltage+NMOS Threshold Voltage*sqrt(NMOS Transistor Gain/PMOS Transistor Gain))/(1+sqrt(NMOS Transistor Gain/PMOS Transistor Gain)) to calculate the Switching Point Voltage, The Switching Point Voltage refers to the threshold voltage (Vth) of a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor). The threshold voltage is a crucial parameter that determines the operational characteristics of the transistor, particularly in switching applications. Switching Point Voltage is denoted by V_s symbol.

How to calculate Switching Point Voltage using this online calculator? To use this online calculator for Switching Point Voltage, enter Supply Voltage (V_dd), PMOS Threshold Voltage (V_tp), NMOS Threshold Voltage (V_tn), NMOS Transistor Gain (β_n) & PMOS Transistor Gain (β_p) and hit the calculate button. Here is how the Switching Point Voltage calculation can be explained with given input values -> 19.15938 = (6.3+3.14+25*sqrt(18/6.5))/(1+sqrt(18/6.5)).

FAQ

What is Switching Point Voltage?

The Switching Point Voltage refers to the threshold voltage (Vth) of a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor). The threshold voltage is a crucial parameter that determines the operational characteristics of the transistor, particularly in switching applications and is represented as V_s = (V_dd+V_tp+V_tn*sqrt(β_n/β_p))/(1+sqrt(β_n/β_p)) or Switching Point Voltage = (Supply Voltage+PMOS Threshold Voltage+NMOS Threshold Voltage*sqrt(NMOS Transistor Gain/PMOS Transistor Gain))/(1+sqrt(NMOS Transistor Gain/PMOS Transistor Gain)). Supply Voltage refers to the voltage level provided to power an electronic circuit or device, PMOS Threshold Voltage is a critical parameter that defines the voltage level at which the transistor begins to conduct current, NMOS Threshold Voltage is a critical parameter that determines the gate-source voltage at which the transistor begins to conduct current, NMOS Transistor Gain is a measure of how much the output current changes in response to a small change in the input voltage & PMOS Transistor Gain is a measure of how much the output current changes in response to a small change in the input voltage.

How to calculate Switching Point Voltage?

The Switching Point Voltage refers to the threshold voltage (Vth) of a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor). The threshold voltage is a crucial parameter that determines the operational characteristics of the transistor, particularly in switching applications is calculated using Switching Point Voltage = (Supply Voltage+PMOS Threshold Voltage+NMOS Threshold Voltage*sqrt(NMOS Transistor Gain/PMOS Transistor Gain))/(1+sqrt(NMOS Transistor Gain/PMOS Transistor Gain)). To calculate Switching Point Voltage, you need Supply Voltage (V_dd), PMOS Threshold Voltage (V_tp), NMOS Threshold Voltage (V_tn), NMOS Transistor Gain (β_n) & PMOS Transistor Gain (β_p). With our tool, you need to enter the respective value for Supply Voltage, PMOS Threshold Voltage, NMOS Threshold Voltage, NMOS Transistor Gain & PMOS Transistor Gain 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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