Title :
Battery-powered digital CMOS design
Author :
Pedram, Massoud ; Wu, Qing
Author_Institution :
Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
In this paper we study tradeoffs between energy dissipation and delay in battery-powered digital CMOS designs. In contrast to previous work, we adopt an integrated model of the VLSI circuit and the battery sub-system that powers it. We show that accounting for the dependence of battery capacity on the average discharge current changes shape of the energy-delay trade-off curve and hence the value of the operating voltage that results in the optimum energy-delay product for the target circuit. Analytical derivations as well as experimental results demonstrate the importance of correct modeling of the battery-hardware system as a whole and provide a more accurate basis for comparing various low power optimization methodologies and techniques targeted toward battery-powered electronics
Keywords :
CMOS digital integrated circuits; VLSI; cells (electric); convertors; delay estimation; integrated circuit design; integrated circuit modelling; low-power electronics; DC-DC convertor; VLSI circuit; average discharge current; battery sub-system; battery-hardware system model; battery-powered digital CMOS design; battery-powered electronics; delay; energy dissipation; energy-delay tradeoff curve; integrated model; low power optimization methodologies; operating voltage; optimum energy-delay product; Batteries; Circuit analysis; Delay; Energy dissipation; Optimization methods; Power system modeling; Semiconductor device modeling; Shape; Very large scale integration; Voltage;
Conference_Titel :
Design, Automation and Test in Europe Conference and Exhibition 1999. Proceedings
Conference_Location :
Munich
Print_ISBN :
0-7695-0078-1
DOI :
10.1109/DATE.1999.761099
