| 학회 |
한국재료학회 |
| 학술대회 |
2008년 가을 (11/07 ~ 11/07, 차세대융합기술연구원) |
| 권호 |
14권 2호 |
| 발표분야 |
제 15회 신소재 심포지엄 - 조명용 백색 LED기술 |
| 제목 |
Pulse 구동에서의 LED 패키지의 열적 거동 및 특성 분석 |
| 초록 |
In this paper, thermal evlauation of high power LEDs under the pulse driving conditions are presented. A theoretical model based on the analogy between the thermal and electrical RC circuits. The thermal performance of LED packages driven by pulse input was calculated using the RC network extracted from the transient thermal measurement. The junction temperature fluctuation band decreases witht the frequency at certain duty cycles. The saturated average junction temperature rise linealrly increases with the duty cycle at certain range of frequencies. The predictions were verified by the real time junction temperature measurement using the peak shift method at pulse conditions. The theoretical model was flund to be very useful and applicable to the evaluation of the thermal performance of LEDs driven at the wide range of pulse conditions. |
| 저자 |
신무환 |
| 소속 |
명지대 |
| 키워드 |
LED; 열특성; Pulse구동
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| E-Mail |
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