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Engineering · Electrical Engineering
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Design a Buck converter to drive a 300W load with an input voltage of 48V and output voltage of 12V. The switching frequency of operation is 50 KHz.

  1. Select the values of L and C such that the operation is CCM and the voltage ripple at the output is less than 1%. In addition, make sure that the inductor current ripple is less than 10%.
  2. Find the voltage and current ratings of all components.
  3. Simulate the circuit and show the following waveforms:
  • Inductor current
  • Switch current and voltage
  • Diode current and voltage
  • Output voltage
  1. Insert a 10μH inductance in series with the load and simulate the circuit. Show the output current and voltage and zoom in to show the ripple at the output.
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