Question

Design a buck converter to produce an output voltage of 18 V across a 10-Ω load resistor.

Buck Converter Design 


Design a buck converter to produce an output voltage of 18 V across a 10-Ω load resistor. The output voltage ripple must not exceed 0.5 percent. The de supply is 48 V. Design for continuous inductor current. 

a. What is the limitation on the load resistance for continuous-current operation? 

b. What would be the range of output voltage for a load resistance range of 5 to 20 ohm? 

c. Redesign the converter so inductor current remains continuous for a load resistance range of 5 to 20 ohm.

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