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*3. Design a buck-boost converter that has a source that varies from 10 to 14 V. The output is regulated at -18 V. The load

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*3. Design a buck-boost converter that has a source that varies from 10 to 14 V. The output is regulated at -18 V. The load varies from 12 to 20 W. The output voltage ripple must be less than 1 percent for any operating condition. Determine the range of the duty ratio of the switch. Calculate the values of the inductor and capacitor, and calculate the values of IL,RMS, IC,RMS. Also, sketch the waveforms of inductor current iz(t), source current is(t), capacitor current ic(t)

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