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This paper studies and compares control schemes for fully-integrated step-up dc-dc converters. The paper analyzes both a pulse-width-modulated and a pulse-frequency-modulated control schemes, and discusses the differences in terms of load currents and output voltages. Both control schemes were designed and simulated in a CMOS 65-nm technology. The paper also compares the analytic models to simulation...
An analytical model of a fully-integrated boost dc-dc converter with coupled on-chip spiral inductors is proposed. The model, which takes the inductor parasitic elements into consideration, shows that the efficiency of the conventional boost converter is very similar to the efficiency of the coupled-inductor boost converter. However, the coupled-inductor converter has a lower input-current ripple,...
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