高功率紫外光發光二極體驅動電路設計之研究

本研究主要在討論高功率紫外光LED之應用及其驅動電路之設計，本研究之驅動電路以自動定電流驅動(ACC)電路方式來減少周圍環境溫度變化對紫外光發光功率的影響，達到穩定的電流供應並穩定其輸出之光功率以製作出一個具有30W輸入功率的UV-A（365nm）固化系統以作為工業級應用的UV膠固化設備以取代現有昂貴的傳統紫外光汞燈固化設備。由於一般驅動電路討論皆以單一LED之穩定驅動方式討論，但是本一論文所討論之產品為一高功率紫外光LED模組(30W)，所以需以陣列方式排列，在定電流電路上之設計更需要考慮陣列式對其之影響。同時又因為此一製作為高功率之紫外光LED固化系統，所以散熱問題更需列入考量。在材料上更需要選擇散熱及對紫外光反射率高的材料，同時在本研究上並設計自動啟動裝置及可調式時間驅動設計以準確的控制固化時間。本研究並針對該設備在不同溫度，其電流及功率受溫度影響的變化，以確定自動定電流驅動電路之制動對高功率LED 具有明確之效果。本一研究並對所製作之高功率紫外光LED固化系統進行其功率量測及了解其功率分佈情形。

關鍵字

自動定電流驅動電路；高功率紫外光LED固化系統

並列摘要

The study mainly discuss the design of the application of high power UV LED and driver circuit, The drive circuit of the present research in automatic constant current drive (ACC) circuit way to reduce the ambient temperature change on the UV-emitting power. Achieve a stable current supply and stabilize its output power to produce light having a 30W input power UV-A (365nm) light box as industrial applications of UV glue curing equipment to replace existing expensive traditional mercury UV curing equipment. As the general discussion begin driving circuit stable single mode LED driver of the discussion, but the product of the one discussed in the paper is a high-power UV LED module (30W), so the need to arranged in an array, the constant current circuits design also need to consider the impact of its array. To do this a while because of the production of high-power UV LED light box, so the problem is even more heat into consideration. The material is more need to choose heat and high reflectance material to ultraviolet light, while at the start of the study and design of the automatic device and adjustable time-driven design to accurately control the curing time. Changes in the study and at different temperatures for the device, its current and power affected by temperature, in order to determine the automatic constant current drive circuit of high power LED's with a clear effect. To study and produce a high-power UV LED light box were measured and its power to understand the power distribution scenarios.