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.