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a buck converter with the following parameters: Vin= 50V, D=0.4, L=270μH, C=1μF, f=25kHz, R=20Ω

a) Draw the waveform of the output voltage, Inductor current, the voltage on the diode and MOSFET. Measure the ripple in the output voltage and Inductor current.

b) Increase the switching frequency (choose any three different values) while keeping other parameters fixed (Vin= 50V, D=0.4, L=270μH, C=1μF, R=20Ω) Draw the waveform of the output voltage and Inductor current. Measure the ripple in the output voltage and Inductor current.

c) Increase the inductor size (any three different values) while keeping other parameters fixed (Vin= 50V, D=0.4, C=1μF, f=25kHz, R=20Ω) Draw the waveform of the Inductor current. Measure the ripple in the Inductor current. Comment on the results.

d) Increase the Capacitor size (any three different values) while keeping other parameters fixed (Vin= 50V, D=0.4, L=270μH, f=25kHz, R=20Ω) Draw the waveform of the output voltage. Measure the ripple in the output voltage.

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S With a short time remaining in the day, a FedEx driver has time to make deliveries at 6 locations among the 9 locations remaining. How many different routes are possible?

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