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The principle is similar. Let current flow through the inductor until it ramps up to 30A, then abruptly divert the current to your load (while including supply voltage). The inductor has a way of overcoming resistance, or voltage threshold, or sometimes air gaps.

My simulation shows a 200uH inductor doing the job to boost 2V 30A @ 240Hz 70% duty into a 21V led. Parasitic resistance must be kept to a minimum. And led performance is hard to predict. Output flashes are intense and brief.