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A Fully Integrated 660 MHz Low-Swing Energy-Recycling DC-DC Converter
Authors
,
M Alimadadi
+5 more
WG Dunford
G Lemieux
S Mirabbasi
PR Palmer
S Sheikhaei
Publication date
1 May 2009
Publisher
Abstract
A fully integrated 0.18 μm DC-DC buck converter using a low-swing "stacked driver" configuration is reported in this paper. A high switching frequency of 660 MHz reduces filter components to fit on chip, but this suffers from high switching losses. These losses are reduced using: 1) low-swing drivers; 2) supply stacking; and 3) introducing a charge transfer path to deliver excess charge from the positive metal-oxide semiconductor drive chain to the load, thereby recycling the charge. The working prototype circuit converts 2.2 to 0.75-1.0 V at 40-55 mA. Design and simulation of an improved circuit is also included that further improves the efficiency by enhancing the charge recycling path, providing automated zero voltage switching (ZVS) operation, and synchronizing the half-swing gating signals. © 2009 IEEE
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CUED - Cambridge University Engineering Department
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oai:generic.eprints.org:344731...
Last time updated on 15/07/2020
CUED - Cambridge University Engineering Department
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:generic.eprints.org:345670...
Last time updated on 15/07/2020