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Buck-Boost acts as Boost converter for duty cycle is equal to _________

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Buck-Boost acts as Boost converter for duty cycle is equal to  _________

(a) .8

(b) .1

(c) .2

(d) .4

I got this question during an online interview.

Origin of the question is Solid-State Switching Circuits topic in division Introduction to Solid-State Switching Circuits of Electric Drives

1 Answer

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Best answer
Right option is (a) .8

Explanation: The output voltage of the buck-boost converter is Vo = D×Vin ÷ (1-D). It can step up and step down the voltage depending upon the value of the duty cycle. If the value of the duty cycle is more than .5 it will work as a boost converter. The answer is .8.

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