Since LED is a sensitive semiconductor component with minus temperature character, the application of LED requires for stable working condition and protection. Thus appears the concept of driver. Unlike normal incandescent light that can connect 220V direct current, LED components have severe requirements over driver. The design for complicated circuit is needed since led high bay is driven by low voltage of two to three electron volts. LED Lights of different applications use different AC power adapter. Now common drivers have many components, multiple emergency application environment, high inefficiency rate and unstable output character. While good quality drivers are high in price which account for 20 to 40 percent of the whole LED light cost.