LED lighting has a huge energy saving effect and will replace traditional light sources. Because LEDs are sensitive semiconductor devices and have negative temperature characteristics, they need to be protected in the application process beacuse of the high requirements for switching elements. LED drivers also should challenge higher conversion efficiency, especially when driving high-power LEDs, because all power that is not output as light is dissipated as heat, and the power conversion efficiency is too low which affects the performance of LED energy saving. High-voltage MOS can provide a stable, reliable and efficient station in the field of LED to meet the design needs of engineers.