New power-aware placement for region-based FPGA architecture combined with dynamic power gating by PCHM

Abstract

The power consumption of FPGA is larger than that of ASIC to perform the same function in the same scaling. In this paper, we propose a Power Control Hard Macro (PCHM) based coarse-grained power gating FPGA architecture to dynamically reduce the power consumption. The algorithm of the placement based on sleep region is presented. After enhancing the CAD framework, a detailed study is given under different region size supported by the new FPGA architecture. As a result, the proposed architecture and the placement algorithm can reduce 51% power consumption on average compared with normal architecture.