Clustered voltage scaling technique for low-power design
ISLPED '95 Proceedings of the 1995 international symposium on Low power design
ISLPED '95 Proceedings of the 1995 international symposium on Low power design
Energy minimization using multiple supply voltages
IEEE Transactions on Very Large Scale Integration (VLSI) Systems - Special issue on low power electronics and design
Power considerations in the design of the Alpha 21264 microprocessor
DAC '98 Proceedings of the 35th annual Design Automation Conference
Power Distribution Networks in High Speed Integrated Circuits
Power Distribution Networks in High Speed Integrated Circuits
Decoupling capacitors for multi-voltage power distribution systems
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Efficient placement of distributed on-chip decoupling capacitors in nanoscale ICs
Proceedings of the 2007 IEEE/ACM international conference on Computer-aided design
Effective radii of on-chip decoupling capacitors
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Efficient distributed on-chip decoupling capacitors for nanoscale ICs
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
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Multiple power supply voltages are often used in modern high performance ICs such as microprocessors to decrease power consumption without affecting circuit speed. The system of decoupling capacitors used in power distribution systems with multiple power supplies is described in this paper. In order to minimize the total impedance of a multi-voltage power delivery system as seen from a particular power supply, a decoupling capacitor is placed between the power supplies. The noise at one power supply can couple into the other power supply, causing power and signal integrity problems in the overall system. With the introduction of a second power supply, therefore, the interaction between the two power distribution networks should be considered. The dependence of the magnitude of the voltage transfer function on the parameters of the power distribution system is investigated. It is shown that it is highly desirable to maintain the effective series inductance of the decoupling capacitors as low as possible to decrease the overshoots in the response of a dual voltage power distribution system over a wide range of operating frequencies. A criterion for an overshoot-free voltage response is presented in this paper. It is noted that the frequency range of the overshoot-free voltage response can be traded off with the magnitude of the response.