Transistor VT Variation, VDD Scaling and Leakage Power

Control power consumption by reducing threshold voltage variation

Modern semiconductor integrated circuits (ICs) have many millions of transistors, and some ICs are approaching one billion transistors. In the most common digital circuits, each of these electronic “switches” turns on or off at the transistor threshold voltage VT (the voltage applied to the gate electrode that turns on the transistor). Unfortunately, VT unintentionally varies across the transistors on each IC as well as between different ICs. This VT variation reduces performance, increases power consumption, and limits power supply (VDD) scaling.

SuVolta’s technology uses a unique channel structure with significant benefits for low power operation compared to conventional transistor technology. It decreases threshold voltage (VT) variation by 50%, enabling 30% scaling of power supply voltage (VDD) while maintaining performance and eliminating the worst-case tail of the transistor VT distribution that causes the majority of IC product leakage power consumption.

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