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Charge-Recovery Computing on Silicon
Cited 40 time in
Web of Science
Cited 50 time in Scopus
- Authors
- Issue Date
- 2005-06
- Citation
- IEEE Transactions on Computers, vol. 54, no. 6, pp. 651-659
- Keywords
- Energy-recovering circuits ; adiabatic computing ; reversible logic ; resonant systems ; energy efficient computing ; voltage scaling
- Abstract
- Three decades ago, theoretical physicists suggested that the controlled recovery of charges could result in electronic
circuitry whose power dissipation approaches thermodynamic limits, growing at a significantly slower pace than the fCV 2 rate for
CMOS switching power. Early engineering research in this field, which became generally known as adiabatic computing, focused on
the asymptotic energetics of computation, exploring VLSI designs that use reversible logic and adiabatic switching to preserve
information and achieve nearly zero power dissipation as operating frequencies approach zero. Recent advances in CMOS VLSI
design have taken us to real working chips that rely on controlled charge recovery to operate at substantially lower power dissipation
levels than their conventional counterparts. Although their origins can be traced back to the early adiabatic circuits, these chargerecovering
systems approach energy recycling from a more practical angle, shedding reversibility to achieve operating frequencies in
the hundreds of MHz with relatively low overhead. Among other charge-recovery designs, researchers have demonstrated microcontrollers,
standard-cell ASICs, SRAMs, LCD panel drivers, I/O drivers, and multi-GHz clock networks. In this paper, we present an
overview of the field and focus on two chip designs that highlight some of the promising charge recovering techniques in practice.
- ISSN
- 0018-9340
- Language
- English
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