学号 毕业设计(论文)题目：手持通信设备充电开关电源的优化设计 作 者 届 别 院 别 专 业 指导老师 职 称 完成时间 摘 要本文简要分析了手机充电器的基本原理，对现有充电器进行讨论并对其存在的问题进行优化. 主要结合电磁干扰的产生特点及对电路的危害, 对共模电流及差模电流进行抑制，构造出一个无Y电容的充电器模型. 同时对开关电源电路、开关变压器结构进行改进. 改进对印刷电路板的布线来增强电路板在实际运用中的抗干扰能力. 结果表明所建立的充电器模型在节能及稳定性等方面要优于传统的手机充电器. 关键词：开关电源；手机充电器；电磁干扰；共模电流；差模电流ABSTRACTThis passage mainly analyzes the basic principles of mobile phone charger. It researched the existing charger, and found the problems and corrects them. Combined the production of electromagnetic interference and the damage it does to the circuit to construct a model of the charger without Y capacitor to suppress the common-mode current and differential mode currents. The other purpose of this design is improve the switching-power-supply circuit and switch transformer. At last, I have improved the capability of enhancing interruption through anti-jamming in the practical using case. The result shows that the established charger model is obviously superior to the traditional mobile phone charger in the aspect of energy conservation and stability.Keywords: Switching Power; Mobile phone charger; Electromagnetic Interference; Common mode current; Differential mode currents目 录摘 要............................................................................................................................................IABSTRACT..............................................................................................................................II目 录............................................................................................................................................
