Optimized design of LED switching power supplies

With the advancement of semiconductor technology, the lighting field has stepped into a brand new period - the LED light era, LED lights have obvious advantages, including long service life, environmentally friendly, high conversion efficiency and stable performance, etc. The performance of LED lights greatly depends on the switching power supply, and in the real environment the LED switching power supply will have the problem of In the real environment LED switching power supply will have the problems of low efficiency and unstable voltage, so to improve the performance of LED lamps need to start from the power supply. This paper proposes a method of using resonance and power feedback loop to solve the shortcomings of the current LED switching power supply and realize the design requirements of LED switching power supply with high efficiency and constant voltage.