With the rapid development of economy and the continuous improvement of people's living standards, China's total energy consumption has also increased rapidly. However, China's per capita conventional energy resources are relatively insufficient, which has become a limiting factor threatening the sustainable development of China's economy and society. New energy represented by solar energy and wind energy are increasingly entering our daily life. In the future power grid, all kinds of energy will be converted into electric energy and connected to the grid. It is a problem that must be well solved by the engineering community to efficiently realize the shutdown and transfer of these energy sources. Our isolating control switch chip can effectively isolate strong and weak current, adapt to various working environments, and completely meet the control requirements of smart grid for various types of energy.