Abstract: The need for low-power design is also becoming a major issue in high-performance digital systems such as microprocessors, digital signal processors (DSPs) and other applications. The dominant factor of power dissipation is caused by switching activity. As low power circuits are most popular now days as the scaling increase the leakage power in the circuit also increases rapidly and so for removing these kinds of leakages and to provide a better power efficiency different types of power gating techniques are used. The different types of power gated circuits using low power VLSI design techniques are analysed and comparison results are displayed. As compared with conventional flip-flops, the flip-flop reduces power dissipation by 75% at 0% data activity and the power reduction ratio is the highest among flip-flops that have been reported so far. The simulations were done using Microwind Layout Editor and DSCH software.

Keywords: Flip-flops, Low-power, VLSI, Transistor.