基于PFC的节能环保电源模块设计.doc

摘 要 目前，随着世界经济的高速发展以及人类社会的不断进步，日益严重的能源危机和持续恶化的环境污染问题已经引起了全球各个国家的高度重视。同时，与电子应用相关的领域越来越多，各种各样的电子设备也随之出现，电子设备的运行离不开电源的支持，因而电源的设计在电子领域的重要性越来越强。人们对于电子设备生产过程中的环保和节能意识导致了人们对于高能效的电源的重视，成为电源设计市场中的主导地位。 伴随着科技技术的不断提高，电子设备逐步往小型化、低成本化、智能化的方向发展，这就使得电子设备的电源指标要求要越来越高，不仅要体积小，体现轻、薄的特点，更重要的是要具备更高的效率以及节能、环保的特性。电源设计的创新行已经改变了传统电源的设计方法，更多的朝着体积小、效率高等方向发展。 本文在研究国内外关于节能环保电源的设计基础之上，提出了一种基于PFC的方案，对PFC技术原理进行了简要介绍，并以此为基础，设计了一种节能环保型开关电源实例。该基于PFC的节能环保电源模块以UCC28019基于PFC的节能环保电源模块ATmega16L单片机为主控核心，搭配电源电路、功率因数测量电路、控制电路、过流保护电路以及语音和显示电路等组成，通对功率因数的调节，创造更高效的供电效率。 实际试验表明：该基于PFC的节能环保电源模块PFC；开关电源；单片机；UCC28019；  Abstract Currently, with the rapid development of world economy and the continuous progress of human society, the increasingly serious energy crisis and environmental pollution problems have become the two major problems facing countries around the world. Meanwhile, the areas associated with the increasing number of electronic applications, a variety of electronic equipment also appears to run without the support of power electronic devices, and thus the importance of design in the power electronics field growing. With respect to environmental protection and improve peoples awareness of energy conservation , low- power design occupies an important position in the production of electronic equipment , which led people to the importance of energy-efficient power and become the dominant power in the design market . With technology constantly improving technology , electronic equipment and gradually towards miniaturization, low cost , intelligent direction , which the power indicator electronic equipment put forward higher requirements , not only to small, reflect light, thin , it is more important to have a higher efficiency and energy saving, environmental characteristics. The small size of the power, and high efficiency power changed the traditional design approach, promoting the power supply design innovation. Based on the study on the basis of domestic and foreign design of energy-saving power