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IGBT Turn OFF Time Formula

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Turn Off Time (IGBT) is the sum of storage time (t_s ) and fall time (t_f ) is defined as the Turn-off time of diode in transistor device. Check FAQs

T off(igbt) = T dl(igbt) + t f1(igbt) + t f2(igbt)

T_off(igbt) - Turn OFF Time (IGBT)?T_dl(igbt) - Delay Time (IGBT)?t_f1(igbt) - Initial Fall Time (IGBT)?t_f2(igbt) - Final Fall Time (IGBT)?

IGBT Turn OFF Time Example

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Here is how the IGBT Turn OFF Time equation looks like with Values.

Here is how the IGBT Turn OFF Time equation looks like with Units.

Here is how the IGBT Turn OFF Time equation looks like.

3.472 = 1.15 + 1.67 + 0.652

3.472s = 1.15s + 1.67s + 0.652s

3.472 = 1.15 + 1.67 + 0.652

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IGBT Turn OFF Time Solution

Follow our step by step solution on how to calculate IGBT Turn OFF Time?

FIRST Step Consider the formula

T off(igbt) = T dl(igbt) + t f1(igbt) + t f2(igbt)

Next Step Substitute values of Variables

∴

T off(igbt) = 1.15s + 1.67s + 0.652s

Next Step Prepare to Evaluate

∴

T off(igbt) = 1.15 + 1.67 + 0.652

LAST Step Evaluate

∴

T off(igbt) = 3.472s

IGBT Turn OFF Time Formula Elements

Variables

Turn OFF Time (IGBT)

Turn Off Time (IGBT) is the sum of storage time (t_s ) and fall time (t_f ) is defined as the Turn-off time of diode in transistor device.

Symbol: T_off(igbt)

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Turn OFF Time (IGBT)

Delay Time (IGBT)

Delay Time (IGBT) is the time required by the collector current to charge the base emitter capacitance of a transistor device.

Symbol: T_dl(igbt)

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Delay Time (IGBT)

Initial Fall Time (IGBT)

Initial Fall Time (IGBT) is the time it takes for the collector current to fall from 90% to 10% of its initial value after the gate voltage has been turned off.

Symbol: t_f1(igbt)

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Initial Fall Time (IGBT)

Final Fall Time (IGBT)

Final Fall Time (IGBT) is the time it takes for the collector current to fall from 10% to 1% of its initial value after the gate voltage has been turned off.

Symbol: t_f2(igbt)

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Final Fall Time (IGBT)

Other formulas in IGBT category

Go Voltage Drop in IGBT in ON-State

V ON(igbt) = i f(igbt) \cdot R ch(igbt) + i f(igbt) \cdot R d(igbt) + V j1(igbt)

Go Emitter Current of IGBT

I e(igbt) = I h(igbt) + i e(igbt)

Go Input Capacitance of IGBT

C in(igbt) = C (g-e)(igbt) + C (g-c)(igbt)

Go Nominal Continuous Collector Current of IGBT

i f(igbt) = \frac{- V ce(igbt) + \sqrt{{(V ce(igbt))}^{2} + 4 \cdot R ce(igbt) \cdot (\frac{T jmax(igbt) - T c(igbt)}{R th(jc)(igbt)})}}{2 \cdot R ce(igbt)}

How to Evaluate IGBT Turn OFF Time?

IGBT Turn OFF Time evaluator uses Turn OFF Time (IGBT) = Delay Time (IGBT)+Initial Fall Time (IGBT)+Final Fall Time (IGBT) to evaluate the Turn OFF Time (IGBT), IGBT Turn OFF Time is the time it takes for the IGBT to turn off after the gate voltage has been turned off. It is important to note that the turn-off time is not instantaneous, and it can take several microseconds for the IGBT to completely turn off. Turn OFF Time Gate Voltage is affected by a number of factors, including the gate voltage, the gate current, the gate resistance, and the gate-source capacitance. The turn-off time can be reduced by increasing the gate current or by reducing the gate resistance. However, it is important to note that increasing the gate current or reducing the gate resistance can increase the switching losses. Turn OFF Time (IGBT) is denoted by T_off(igbt) symbol.

How to evaluate IGBT Turn OFF Time using this online evaluator? To use this online evaluator for IGBT Turn OFF Time, enter Delay Time (IGBT) (T_dl(igbt)), Initial Fall Time (IGBT) (t_f1(igbt)) & Final Fall Time (IGBT) (t_f2(igbt)) and hit the calculate button.

FAQs on IGBT Turn OFF Time

What is the formula to find IGBT Turn OFF Time?

The formula of IGBT Turn OFF Time is expressed as Turn OFF Time (IGBT) = Delay Time (IGBT)+Initial Fall Time (IGBT)+Final Fall Time (IGBT). Here is an example- 3.472 = 1.15+1.67+0.652.

How to calculate IGBT Turn OFF Time?

With Delay Time (IGBT) (T_dl(igbt)), Initial Fall Time (IGBT) (t_f1(igbt)) & Final Fall Time (IGBT) (t_f2(igbt)) we can find IGBT Turn OFF Time using the formula - Turn OFF Time (IGBT) = Delay Time (IGBT)+Initial Fall Time (IGBT)+Final Fall Time (IGBT).

Can the IGBT Turn OFF Time be negative?

No, the IGBT Turn OFF Time, measured in Time cannot be negative.

Which unit is used to measure IGBT Turn OFF Time?

IGBT Turn OFF Time is usually measured using the Second[s] for Time. Millisecond[s], Microsecond[s], Nanosecond[s] are the few other units in which IGBT Turn OFF Time can be measured.

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IGBT Turn OFF Time Formula

IGBT Turn OFF Time Example

IGBT Turn OFF Time Solution

IGBT Turn OFF Time Formula Elements

Other formulas in IGBT category

How to Evaluate IGBT Turn OFF Time?

FAQs on IGBT Turn OFF Time

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