Thermal analysis of high power LEDs at working conditions

In this paper, we present the thermal analysis of high-power light-emitting diodes (LEDs) with under the real operating conditions. Thermal transient measurements were performed to study the thermal characteristics of high power LED packages. The effects of working conditions such as the ambient temperature, working time, cooling element, and the applied pressure on the thermal performance of high power LED package were investigated. The results indicate that the design with thermal characteristic is imperative for reliable operation of the high power LED package.