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A fully integrated DC-DC converter with digitally controlled dual output stages is introduced in this paper. An auxiliary output stage is added in parallel to the main output switching stage to mitigate the trade-off between fast load transient response and high power conversion efficiency. A 12V-to-1V, 3W voltage-control-mode prototype converter is designed and fabricated with TSMC 0.25μm 40V process...
This paper presents a 4 MHz, 0.9 W digitally controlled DC-DC converter with a miniature planar inductor for 1.8 V portable devices. In applications such as cellular phones, it is crucial to achieve high conversion efficiency over the entire load range. A binary-weighted segmented power stage is used to dynamically optimize the converter efficiency by reducing the gate-drive losses at mid-to-light...
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