Power Electronics — question 5 of 10
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Assume an ideal (lossless) converter for the duty cycle calculation.
A synchronous buck converts 12V to 5V, switching at 300kHz with a 15uH inductor. The converter transitions from continuous to discontinuous conduction mode (CCM to DCM) when the average load current drops below half the peak-to-peak inductor ripple current. Calculate that boundary current, then explain what happens to the inductor current waveform and output behavior once you cross into DCM.
This one resolves to a number. Give the value in the field below and your reasoning in the box — the number is checked exactly, by arithmetic.