In the field of high-power LED lighting project, requires more than 100W high-power & constant-current drive power, while requiring high efficiency and power factor is high,in the current E27, B22 and GU10 lamp on the market with a LED driver power supply can not meet LED lighting engineering.High-power LED driver power supply design considerationsFrom the history of lighting, almost no use of isolation methods.the Lighting design methods than isolation drive will be affect the light drive efficiency.nor with the energy saving requirements in future, so LED lighting design is not necessarily the way to the use of isolation.The number of high-power LED series,the current flowing through the power LED is no longer confined to number of high-power white LED series。In order to meet the different needs of emission luminance, flexible driving a plurality of high-power LED can be achieved. For high-power white LED used in parallel, the class does not guarantee that the parallel branch circuit LED luminous intensity consistency. However, the same constant current source may be used a plurality of drive different parallel branches LED, thus ensuring consistency of attributes LED parallel branches, so that the light emission luminance can be solved the issue of consistency.