Transcript an efficient utilization of a power in vlsi design

AN EFFICIENT UTILIZATION
OF A POWER IN VLSI DESIGN
OBJECTIVE
To Propose Various Techniques to
Design Low Power and High
Performance VLSI Systems.
INTRODUCTION
Types of Integrated Chips (IC).
Manufacturing steps in VLSI Chips.
The Sources of Power Dissipation.
Low Power Design Space.
Power Minimization Techniques.
TYPES OF IC’S
SSI
LSI
VLSI
ULSI
MANUFACTURING STEPS IN
VLSI
SOURCES OF POWER
DISSIPATION
Leakage Currents.
The Short Circuit Current.
Charging & Discharging of capacitive
loads.
LOW POWER DESIGN
SPACE
Optimization of
Voltage,
Physical Capacitance, and
Switching Activity.
POWER MINIMIZATION
TECHNIQUES
Reduction of Chip & Package Capacitance,
Scaling the Supply Voltage,
Employing Better design Techniques,
Using Power Management Strategies,
SOI Technology.
SOI Technology
 Improves Circuit Noise Margin and performance,
 Reduce the Junction Capacitance due to Oxide
isolations.
 Two types of SOI technology:
Partially Depleted (PD): Floating body effects
 Fully Depleted (FD): No Floating body effects

CONCLUSIONS
 This technology targeting the supply voltage around
1V and operating with reduced threshold,
 Low power interconnects reduced the swing,
 Application specific processing,
 Integrated design methodology,
 Power saving techniques, and
 System performance can be improved by moving
the work to less energy constrained parts of a
system.
REFERENCES
 S.M. Kang " Accurate simulation of power dissipation in VLSI
circuits. " IEEE journal of Solid State Circuits, 22 (5): 889 - 891 Oct
1986.
 A. Tyagi. ' Hercules: a power analyzer of MOS VLSI circuits. " in
proceeding of the I Aided Design, pages 530-533, November, 1987.
 P. Van Oostende, P. Six and J. Vandewalle and H.De Man./"
Estimation of typical power of synchronous {CMOS} circuits using a
hierarchy of simulators. " IEEE Journal of Solid State Circuits,
28(1): 26-39, January 1993 EEE International Conference on
computer 1994.
 B.J. George, D.Gossian, S.C. Tyler, M.C Wloka, and G.K.H. Yeap. "
Power analysis and characterization for semi-custom design. " In
proceeding of the 1994 International workshop on Low Power
Design, pages 215-281,April.