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Critical Value of Inductor for Buck Regulator Formula

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Critical Inductance refers to the minimum value of the inductance required in these converters to maintain continuous conduction mode (CCM) or continuous current flow through the inductor. Check FAQs

L x = \frac{(1 - D) \cdot R}{2 \cdot f}

L_x - Critical Inductance?D - Duty Cycle?R - Resistance?f - Frequency?

Critical Value of Inductor for Buck Regulator Example

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Here is how the Critical Value of Inductor for Buck Regulator equation looks like with Values.

Here is how the Critical Value of Inductor for Buck Regulator equation looks like with Units.

Here is how the Critical Value of Inductor for Buck Regulator equation looks like.

0.114 = \frac{(1 - 0.21) \cdot 10.1}{2 \cdot 35}

0.114H = \frac{(1 - 0.21) \cdot 10.1Ω}{2 \cdot 35Hz}

0.114 = \frac{(1 - 0.21) \cdot 10.1}{2 \cdot 35}

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Critical Value of Inductor for Buck Regulator Solution

Follow our step by step solution on how to calculate Critical Value of Inductor for Buck Regulator?

FIRST Step Consider the formula

L x = \frac{(1 - D) \cdot R}{2 \cdot f}

Next Step Substitute values of Variables

∴

L x = \frac{(1 - 0.21) \cdot 10.1Ω}{2 \cdot 35Hz}

Next Step Prepare to Evaluate

∴

L x = \frac{(1 - 0.21) \cdot 10.1}{2 \cdot 35}

Next Step Evaluate

∴

L x = 0.113985714285714H

LAST Step Rounding Answer

∴

L x = 0.114H

Critical Value of Inductor for Buck Regulator Formula Elements

Variables

Critical Inductance

Critical Inductance refers to the minimum value of the inductance required in these converters to maintain continuous conduction mode (CCM) or continuous current flow through the inductor.

Symbol: L_x

Measurement: InductanceUnit: H

Note: Value should be greater than 0.

Formulas to find Critical Inductance

Duty Cycle

A Duty cycle or power cycle is the fraction of one period in which a signal or system is active in a voltage regulator circuit.

Symbol: D

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Duty Cycle

Resistance

Resistance is a measure of the opposition to current flow in any voltage regulator circuit. Its S.I unit is ohm.

Symbol: R

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Resistance

Frequency

Frequency is the frequency at which a voltage regulator circuit or system tends to oscillate in the absence of any driving or damping force.

Symbol: f

Measurement: FrequencyUnit: Hz

Note: Value should be greater than 0.

Formulas to find Frequency

Other formulas in Buck Regulator category

Go Critical Value of Capacitor for Buck Regulator

C x(bu) = \frac{1 - D}{16 \cdot L x \cdot f^{2}}

How to Evaluate Critical Value of Inductor for Buck Regulator?

Critical Value of Inductor for Buck Regulator evaluator uses Critical Inductance = ((1-Duty Cycle)*Resistance)/(2*Frequency) to evaluate the Critical Inductance, The Critical value of inductor for Buck regulator formula is defined as the minimum value of inductance in order to have a continuous current in the inductor and, therefore, maintain good regulation. Critical Inductance is denoted by L_x symbol.

How to evaluate Critical Value of Inductor for Buck Regulator using this online evaluator? To use this online evaluator for Critical Value of Inductor for Buck Regulator, enter Duty Cycle (D), Resistance (R) & Frequency (f) and hit the calculate button.

FAQs on Critical Value of Inductor for Buck Regulator

What is the formula to find Critical Value of Inductor for Buck Regulator?

The formula of Critical Value of Inductor for Buck Regulator is expressed as Critical Inductance = ((1-Duty Cycle)*Resistance)/(2*Frequency). Here is an example- 0.113986 = ((1-0.21)*10.1)/(2*35).

How to calculate Critical Value of Inductor for Buck Regulator?

With Duty Cycle (D), Resistance (R) & Frequency (f) we can find Critical Value of Inductor for Buck Regulator using the formula - Critical Inductance = ((1-Duty Cycle)*Resistance)/(2*Frequency).

Can the Critical Value of Inductor for Buck Regulator be negative?

No, the Critical Value of Inductor for Buck Regulator, measured in Inductance cannot be negative.

Which unit is used to measure Critical Value of Inductor for Buck Regulator?

Critical Value of Inductor for Buck Regulator is usually measured using the Henry[H] for Inductance. Millihenry[H], Microhenry[H] are the few other units in which Critical Value of Inductor for Buck Regulator can be measured.

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Critical Value of Inductor for Buck Regulator Formula

Critical Value of Inductor for Buck Regulator Example

Critical Value of Inductor for Buck Regulator Solution

Critical Value of Inductor for Buck Regulator Formula Elements

Other formulas in Buck Regulator category

How to Evaluate Critical Value of Inductor for Buck Regulator?

FAQs on Critical Value of Inductor for Buck Regulator

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