Critical Value of Capacitor for Buck-Boost Regulator Formula

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Critical capacitance is minimum value of capacitance in order to have a continuous current in the inductor and, therefore, maintain good regulation. Check FAQs
Cx=D2fR
Cx - Critical Capacitance?D - Duty Cycle?f - Frequency?R - Resistance?

Critical Value of Capacitor for Buck-Boost Regulator Example

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

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

Here is how the Critical Value of Capacitor for Buck-Boost Regulator equation looks like.

297.0297Edit=0.21Edit235Edit10.1Edit
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Critical Value of Capacitor for Buck-Boost Regulator Solution

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

FIRST Step Consider the formula
Cx=D2fR
Next Step Substitute values of Variables
Cx=0.21235Hz10.1Ω
Next Step Prepare to Evaluate
Cx=0.2123510.1
Next Step Evaluate
Cx=0.000297029702970297F
Next Step Convert to Output's Unit
Cx=297.029702970297μF
LAST Step Rounding Answer
Cx=297.0297μF

Critical Value of Capacitor for Buck-Boost Regulator Formula Elements

Variables
Critical Capacitance
Critical capacitance is minimum value of capacitance in order to have a continuous current in the inductor and, therefore, maintain good regulation.
Symbol: Cx
Measurement: CapacitanceUnit: μF
Note: Value should be greater than 0.
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.
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.
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.

How to Evaluate Critical Value of Capacitor for Buck-Boost Regulator?

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

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

FAQs on Critical Value of Capacitor for Buck-Boost Regulator

What is the formula to find Critical Value of Capacitor for Buck-Boost Regulator?
The formula of Critical Value of Capacitor for Buck-Boost Regulator is expressed as Critical Capacitance = Duty Cycle/(2*Frequency*Resistance). Here is an example- 3E+8 = 0.21/(2*35*10.1).
How to calculate Critical Value of Capacitor for Buck-Boost Regulator?
With Duty Cycle (D), Frequency (f) & Resistance (R) we can find Critical Value of Capacitor for Buck-Boost Regulator using the formula - Critical Capacitance = Duty Cycle/(2*Frequency*Resistance).
Can the Critical Value of Capacitor for Buck-Boost Regulator be negative?
No, the Critical Value of Capacitor for Buck-Boost Regulator, measured in Capacitance cannot be negative.
Which unit is used to measure Critical Value of Capacitor for Buck-Boost Regulator?
Critical Value of Capacitor for Buck-Boost Regulator is usually measured using the Microfarad[μF] for Capacitance. Farad[μF], Kilofarad[μF], Millifarad[μF] are the few other units in which Critical Value of Capacitor for Buck-Boost Regulator can be measured.
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