An energy-efficient power-gating adiabatic circuits using transmission gate switches

This paper presents a new power-gating technique for adiabatic circuits to reduce energy loss during idle state. The power-gating switches based on DTGAL (dual transmission gate adiabatic logic) circuits are used to detach adiabatic logic blocks from power-clocks. The energy overhead optimization for the proposed power-gating scheme is investigated. The 8-bit full adders based on DTGAL circuits are verified using the proposed power-gating technique. All circuits are verified using the BSIM3V3 models of TSMC 0.18 mum CMOS technology. Energy loss is reduced greatly by shutting down idle adiabatic logic blocks.