MOSFET Turn Off Time Solution

STEP 0: Pre-Calculation Summary
Formula Used
Turn OFF Time = MOSFET OFF Delay Time+Fall Time
Toff = Td-off+Tf
This formula uses 3 Variables
Variables Used
Turn OFF Time - (Measured in Second) - turn Off time is the sum of storage time (ts ) and fall time (tf ) is defined as the Turn-off time of diode in transistor device.
MOSFET OFF Delay Time - (Measured in Second) - MOSFET OFF delay time is the time required for the gate source capacitance of a MOSFET to discharge from applied voltage to full gate voltage.
Fall Time - (Measured in Second) - Fall Time is the time taken for the collector current to reach from 90% of its maximum value to 10% of its initial value in a transistor device.
STEP 1: Convert Input(s) to Base Unit
MOSFET OFF Delay Time: 1.55 Second --> 1.55 Second No Conversion Required
Fall Time: 1.85 Second --> 1.85 Second No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Toff = Td-off+Tf --> 1.55+1.85
Evaluating ... ...
Toff = 3.4
STEP 3: Convert Result to Output's Unit
3.4 Second --> No Conversion Required
FINAL ANSWER
3.4 Second <-- Turn OFF Time
(Calculation completed in 00.004 seconds)

Credits

Created by Parminder Singh
Chandigarh University (CU), Punjab
Parminder Singh has created this Calculator and 100+ more calculators!
Verified by Rachita C
BMS College Of Engineering (BMSCE), Banglore
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9 MOSFET Calculators

Input Current Distortion Factor
Go Input Current Distortion Factor = RMS Supply Current Fundamental Component/RMS Supply Current
Input Current Harmonic Factor
Go Input Current Harmonic Factor = sqrt((1/Input Current Distortion Factor^2)-1)
Current Ripple Factor
Go Current Ripple Factor = ((RMS Current/RMS Current DC Component)-1)^0.5
Power Loss in MOSFET
Go Average Power Loss = Drain Current^2*Drain Source Resistance
Voltage Ripple Factor
Go Voltage Ripple Factor = Ripple Voltage/DC Output Voltage
Rectification Ratio
Go Rectification Ratio = DC Power Output/AC Input Power
MOSFET Turn Off Time
Go Turn OFF Time = MOSFET OFF Delay Time+Fall Time
Transistor Aspect Ratio
Go Aspect Ratio = Width of Channel/Channel Length
MOSFET Turn ON Time
Go Turn ON Time = MOSFET ON Delay Time+Rise Time

MOSFET Turn Off Time Formula

Turn OFF Time = MOSFET OFF Delay Time+Fall Time
Toff = Td-off+Tf

How does a MOSFET turn off?

The MOSFET can be turned off with a negative or zero gate voltage. Due to this, the gate to source voltage decreases from V to Vgsp. Cgs discharges from V to Vgsp gate voltage. The drain current will be zero when the voltage Vgs < Vgst then it is said to have turned off.

How to Calculate MOSFET Turn Off Time?

MOSFET Turn Off Time calculator uses Turn OFF Time = MOSFET OFF Delay Time+Fall Time to calculate the Turn OFF Time, The MOSFET Turn Off Time formula is defined as the time till the MOSFET gets from conducting state to non-conducting state. Turn OFF Time is denoted by Toff symbol.

How to calculate MOSFET Turn Off Time using this online calculator? To use this online calculator for MOSFET Turn Off Time, enter MOSFET OFF Delay Time (Td-off) & Fall Time (Tf) and hit the calculate button. Here is how the MOSFET Turn Off Time calculation can be explained with given input values -> 3.4 = 1.55+1.85.

FAQ

What is MOSFET Turn Off Time?
The MOSFET Turn Off Time formula is defined as the time till the MOSFET gets from conducting state to non-conducting state and is represented as Toff = Td-off+Tf or Turn OFF Time = MOSFET OFF Delay Time+Fall Time. MOSFET OFF delay time is the time required for the gate source capacitance of a MOSFET to discharge from applied voltage to full gate voltage & Fall Time is the time taken for the collector current to reach from 90% of its maximum value to 10% of its initial value in a transistor device.
How to calculate MOSFET Turn Off Time?
The MOSFET Turn Off Time formula is defined as the time till the MOSFET gets from conducting state to non-conducting state is calculated using Turn OFF Time = MOSFET OFF Delay Time+Fall Time. To calculate MOSFET Turn Off Time, you need MOSFET OFF Delay Time (Td-off) & Fall Time (Tf). With our tool, you need to enter the respective value for MOSFET OFF Delay Time & Fall Time 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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