CUED Publications database

A fully integrated 660 MHz low-swing energy-recycling DC-DC converter

Alimadadi, M and Sheikhaei, S and Lemieux, G and Mirabbasi, S and Dunford, WG and Palmer, PR (2009) A fully integrated 660 MHz low-swing energy-recycling DC-DC converter. IEEE Transactions on Power Electronics, 24. pp. 1475-1485. ISSN 0885-8993

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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.

Item Type: Article
Uncontrolled Keywords: Charge recycling Integrated output filter Lowpower stacked driver Subgigahertz switching, switch mode DC-DC converter
Subjects: UNSPECIFIED
Divisions: Div B > Electronics, Power & Energy Conversion
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:21
Last Modified: 08 Dec 2014 02:26
DOI: 10.1109/TPEL.2009.2013624