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Consider a buck converter with the controlled switch as MOSFET and the uncontrolled switch as diode, the input to the buck converter is 60 V. The MOSFET is turned on for 20 μ sec and turned off for 10 μ sec periodically. Assuming ideal components, the output voltage of the buck converter is

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  1. 20 V
  2. 30 V
  3. 40 V
  4. 50 V

Answer (Detailed Solution Below)

Option 3 : 40 V
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Detailed Solution

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Concept

Buck converter:

F1 Vinanti Engineering 22.12.22 D7

The output voltage of the buck converter is given as follows:

Vo = D Vin

Calculation:

V0 = DVs

\(\rm D=\frac{T_0w}{T_0w+T_{df}}\)

\(\rm D =\frac{20}{20+10}=\frac{20}{30}=0.666\)

V0 ⇒ 0.66 × 60

V0 ⇒ 40 V

output voltage ⇒ 40 V.A

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