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Discontinuous Mode Analysis of Buck-Boost Regulator

A converter c...

Question

A converter circuit shown in figure below operates at 25 kHz frequency. If average load current is 2.5 A and the duty cycle is 0.75 then, peak-to-peak output ripple voltage is_________V.

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Solution

Given, $I_{0} = 2.5 A$
$α = 0.75$
$f = 25$ kHz

Given circuit is Buck-boost converter,

$Δ V = \frac{I_{0} α}{f C} = \frac{2.5 \times 0.75}{25 \times 10^{3} \times 150 \times 10^{- 6}}$
$= 0.5$ V

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