방열특성 제어를 위한 PWM 전류제어 기반 LED 모듈 개발 = Development of LED Module Control-based PWM Current for Control of Heat-dissipation

다국어 초록 (Multilingual Abstract)

This paper shows significant methods that improve the lifespan of LED modules as well as efficiently using an aluminum heat-sink for LED module in high power. It proposes a method that raises stability and lifespan to protect LED modules and the power unit when the LED module has been used for a long hours at high temperatures. During the research, we applied a method of pulse-width modulation (PWM) in order to prevent the phenomenon that the entire power of a system is turned off and the lifespan is reduced when the LED nodule reacts to the high temperatures. To protect the LED module and SMPS based on high efficiency, a temperature sensor is attached underneath the circuit board and the sensor measures the temperature of circuit board when the LED module is powered on. The electrical power connected to SMPS is controlled by PWM when the temperature of the LED module reaches a particular temperature.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 투광등 설계
• 3. 실험결과 및 고찰
• 4. 결론
• REFERENCES

참고문헌 (Reference)

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