Clock Gating Based Energy Efficient and Thermal Aware Design for Vedic Equation Solver on 28nm and 40nm FPGA

In this paper, we are integrating clock gating in design of energy efficient equation solver circuits based on Vedic mathematics. Clock gating is one of the best energy efficient techniques. The Sutra 'SunyamSamyasamuccaye' says thatif sum of numerator and sum of denominator is same then we can equate that sum to zero and find the value of unknown variable. In order to test the portability of our design, we are operating our design with respective frequency of different mobile architecture. Operating frequency of iPhone6 is 2100MHz. For thermal analysis of our energy efficient design, we have taken temperatures of four different regions of Furnace Creek Ranch (329.85K), Mohenjo-Daro (326.65K), and median temperature of Delhi (313.15K) and standard normal temperature (294.15K). Saving in clock power dissipation is 96.15% for 1400MHz, 94.59% for 1.2GHz, 93.75% for 2100MHz, 94.23% for 1700MHz, 94.54% for 1800MHz, and 94.02% for 2.2GHz, when we use gated clock instead of un gated one on 40nm FPGA and temperature is 329.85K. Power consumption in 28nm FPGA is less than 40nm FPGA.