Dynamic voltage and frequency scaling circuits with two supply voltages

Abstract— This paper presents circuits that enable dynamic voltage and frequency scaling (DVFS) for finegrained chip multi-processors to reduce both dynamic and leakage power dissipation. Each processor can run on either a high voltage or low voltage power supply, or disconnect from both. Switching between power supplies is performed dynamically, where scaling decisions are based on each processor’s workload, allowing for reduced power consumption without a significant impact on performance. Tradeoffs in performance versus circuit area and supply noise are examined. The DVFS circuits are designed in a wrapper around each individual processor, resulting in a 12% area overhead. DVFS operation utilizing supply

• Type: Conference
• Year: 2008
• Where: ISCAS
• Authors: Wayne H. Cheng, Bevan M. Baas
• Keywords: Enable Dynamic Voltage, Hardware, ISCAS 2008, Leakage Power Dissipation, Voltage Power Supply