Question

Design a buck converter to produce an output voltage of XX volts across a 60 ohm load resistor. The output voltage ripple must not exceed 1 percent. The input dc supply is 180 V. Design for continouous inductor current.

Specify the following:
a. Duty Ratio

Answer 1

To design a buck converter with a specified output voltage, the duty ratio can be calculated using the formula: Duty Ratio = V_out / V_in.

Step-by-step explanation:

To design a buck converter with an output voltage of XX volts, we need to determine the duty ratio of the converter. The duty ratio is the ratio of the switch on-time to the total period of the converter. In a buck converter, the duty ratio is given by the equation: Duty Ratio = V_out / V_in, where V_out is the desired output voltage and V_in is the input voltage.

For the given problem, the input voltage is 180 V and the desired output voltage is XX volts. To calculate the duty ratio, we can use the formula: Duty Ratio = XX / 180.