Question

Calculate the output voltage of the Buck converter if the supply voltage is 11 V and duty cycle value is .4.

(a) 4.4 V

(b) 2.2 V

(c) 4.8 V

(d) 6.4 V

The question was asked during an online exam.

Question is from Solid State Controlled Drives in division Introduction to Solid State Controlled Drives of Electric Drives

Answer 1

Correct answer is (a) 4.4 V

The explanation: The output voltage of the buck converter is Vo = Vin×(D)=11×.4=4.4 V. The value of the duty cycle is less than one which makes the Vo < Vin. The buck converter is used to step down the voltage.