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A review of state-of-the-art and proposal for high frequency inductive step-down DC-DC converter in advanced CMOS

Abstract : This paper reviews the state-of-the-art of high switching frequency, integrated DC-DC converters and presents the main trade-offs and challenges emerging from this review. Various converter structures (1-phase buck, 2-phase buck, 2-phase coupled buck and 3-level converter) are then discussed and analyzed through simulation from a losses point-of-view. Considering the review, the architecture analysis and the technology model, 4 converters are designed for a given set of specifications: 3.3 V to 1.2 V, 280 mA output current at high switching frequency (100-200 MHz) in 40 nm bulk CMOS. A cascode power stage is used in order to enhance power conversion efficiency, and 1-phase and 2-phase structures are designed. Post-layout simulation results are presented, showing an efficiency above 90 % for a 2-phase converter.
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https://hal.archives-ouvertes.fr/hal-01374138
Contributor : Christian Martin <>
Submitted on : Thursday, September 29, 2016 - 6:09:29 PM
Last modification on : Monday, September 13, 2021 - 2:44:04 PM
Long-term archiving on: : Friday, December 30, 2016 - 3:30:17 PM

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Florian Neveu, Bruno Allard, Christian Martin. A review of state-of-the-art and proposal for high frequency inductive step-down DC-DC converter in advanced CMOS. Analog Integrated Circuits and Signal Processing, Springer Verlag, 2016, 87, pp.201 - 211. ⟨10.1007/s10470-015-0683-z⟩. ⟨hal-01374138⟩

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