A Bipolar-Pulse Voltage Method for Junction Temperature Measurement of Alternating Current Light-Emitting Diodes
| العنوان: | A Bipolar-Pulse Voltage Method for Junction Temperature Measurement of Alternating Current Light-Emitting Diodes |
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| المؤلفون: | Yijun Lu, Yi Tu, Ziquan Guo, Lihong Zhu, Yue Lin, Yulin Gao, Tingzhu Wu, Honghui Zhu, Xiao Jingjing, Zhong Chen |
| المصدر: | IEEE Transactions on Electron Devices. 64:2326-2329 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 010302 applied physics, Materials science, business.industry, Thermal resistance, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Temperature measurement, Thermal management of high-power LEDs, Electronic, Optical and Magnetic Materials, law.invention, Amplitude, law, Thermocouple, 0103 physical sciences, Optoelectronics, Junction temperature, Electrical and Electronic Engineering, 0210 nano-technology, Alternating current, business, Diode |
| الوصف: | We introduce a new method for measuring the junction temperature of alternating current light-emitting diodes. This method employs a periodic bipolar voltage pulse signal as the input, and utilizes the amplitude of corresponding output current as the temperature sensitive parameter (TSP), of which a linear temperature dependence is proven in a prior experiment in this paper. On the basis of the TSP, we devise a detailed procedure—first, measure the thermal resistance of the package of ac-LEDs, which further contributes to the calculation of junction temperatures under various power inputs. Comparisons between values calculated by using this method and those obtained directly from a thermocouple indicate a decent accuracy of the former. The advantage of this method benefits from the stability of thermal resistance under different driving conditions that one could immediately obtain the junction temperature by measuring the electric and optical powers. |
| تدمد: | 1557-9646 0018-9383 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::76f629dcda3426b979926ee406848042Test https://doi.org/10.1109/ted.2017.2686704Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........76f629dcda3426b979926ee406848042 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15579646 00189383 |
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