The Road to Fully Integrated DC-DC Conversion via the Switched-Capacitor Approach

This paper provides a perspective on progress toward realization of efficient, fully integrated dc-dc conversion and regulation functionality in CMOS platforms. In providing a comparative assessment between the inductor-based and switched-capacitor approaches, the presentation reviews the salient fe...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2013-09, Vol.28 (9), p.4146-4155
Main Authors: Sanders, Seth R., Alon, Elad, Hanh-Phuc Le, Seeman, Michael D., John, Mervin, Ng, Vincent W.
Format: Article
Language:English
Subjects:
Capacitors
Charge-pump
Circuits
CMOS
Comparative analysis
Electric currents
high power density
Impedance
Inductors
Integrated approach
Measurement
power supply on chip
switched-capacitor (SC) dc-dc converters
Switches
Switching circuits
Technology
Voltage control
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Summary:This paper provides a perspective on progress toward realization of efficient, fully integrated dc-dc conversion and regulation functionality in CMOS platforms. In providing a comparative assessment between the inductor-based and switched-capacitor approaches, the presentation reviews the salient features in effectiveness in utilization of switch technology and in use and implementation of passives. The analytical conclusions point toward the strong advantages of the switched-capacitor (SC) approach with respect to both switch utilization and much higher energy densities of capacitors versus inductors. The analysis is substantiated with a review of recently developed and published integrated dc-dc converters of both the inductor-based and SC types.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2012.2235084