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Figure $3\mathrm{.}6.$ The Buck converter simulation circuit.

Simulate the circuit in Fig. $3\mathrm{.}6$ using a IGBT or MOSFET switch in PSIM.

Choose the following switching frequency and duty cycle for the gating signal, and record the

dc voltage current and current peak$-$to$-$peak ripple.

Switching frequency $($f$\_("$sw $"))=1$kHz$.$ Duty cycle $($D$)=0\mathrm{.}5.$

Plot the input$-$output voltage and current waveforms $($Data Table $7).$

Plot the input current and load voltage harmonic spectra. Use the FFT utility in PSIM.

Show the input current, Iin$\_$dc$,$ without and with the input filter inductor, Ls$\_$in$.$ Show the harmonic content.

Table $7.$ Converter Simulation Results $($PSIM$)$