High-power LED constant-current driver circuit design and efficiency analysis

High-power LED lighting driver technology is one of the key issues of its application and development. Through analysis of the high-power LED light source´s electrical characteristics and performance requirements to driver circuit, combining with several common constant-current driver circuits, this paper studies these types of constant-current driver circuit´s structure, performance and driving principle, discusses how to affect driver efficiency to the structure and components of the driver circuit, and points out some key problems of the constant-current driver circuit design that should be noted and the intelligent trend of the driver circuit design.