산업기술연구 (Journal of Industrial Technology)
- 제30권A호
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- Pages.83-88
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- 2010
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- 1229-9588(pISSN)
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- 1598-1371(eISSN)
고출력 LED의 접합온도 측정회로 설계 및 구현
Design and Implementation of High Power LED Junction Temperature Measurement Circuit
초록
Recently, the LED lighting is widely used to illumination purpose due to its high luminous efficiency and the long life time. However, the light power and lifetime is reduced by junction temperature increment of LED. So it is important to measure the junction temperature accurately. In this paper, we proposed a new design and implementation method of high power LED junction temperature measurement circuit. The proposed circuit has two current sources which are a driving current source and a measurement is verified by experiment, and the result shows that the proposed circuit is appropriate to practical use.