Now-a-days, low power circuits are most popular; in the circuit as the scaling increase the leakage powers increases. So for removing these kinds of leakages, the authors are using many types of power gating techniques and to provide a better power efficiency. In this paper, by using low power VLSI design techniques they are going to analyze the different types of power gated circuits. They are going to display the comparison results between different nano-meter technologies. Micro-wind Layout Editor & DSCH software tools are used for simulations & circuit design.