Integrated high step-down multiphase buck converter with high power density

A novel integrated implementation of a high step-down multiphase buck for low voltage power supply is presented. The design and test chip measurements of a [10.8, 16]V to [0.65, 2]V, 2A, 10 MHz, 25.6 mW/mm
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, four-phases single-chip solution are presented with considerations on architecture, passive components, problems related to high frequency integration and relative improvements on power density with respect to previous solutions.