The urgency of the discussed issue is caused by the need to reduce electricity costs for lighting decreasing power losses in the power supply. The main aim of the study is to formulate basic requirements for LED driver; to analyze modern high-efficiency light sources based on LED lamp, to test two switch flyback converter for technical and energy performance: efficiency, accuracy of current regulation, output ripple voltage and power factor, energy. Methodology: Literature review on topics, such as comparative data analysis using prototype testing and computer modeling using OrCad program. Results: the authors have proposed a version of two switch flyback converter for lighting units with galvanic isolation and have constructed its computer model. The results demonstrate good working performance according to standard requirements for green energy device specification.