Problem 2: Consider a ZCS buck converter with following parameters: $V_s = 100 V$, $L_r = 10 \mu H$, $C_r = 0.01 \mu F$ The load current ranges from 0.5 to 3 A. Determine the range of switching frequency required to regulate the output voltage at 50 V.
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First, we need to determine the duty cycle (D) required to regulate the output voltage at 50V. The duty cycle is given by the formula: D = Vout / Vin where Vout is the desired output voltage (50V) and Vin is the input voltage (100V). D = 50V / 100V = 0.5 Show more…
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In a buck converter, consider all components to be ideal. Let the output voltage level to be constant at Vo-10 V by controlling the switch duty ratio D. Calculate the minimum inductance L required to keep the converter operation in a continuous conduction mode under all conditions if the input voltage, Vd is in the range of 20- 50 V, output power, Po ≥ 10 W, and switching frequency, fs = 20 kHz.
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