题目 36V15A 直流高频开关电源的设计 中文摘要题目:36V15A 直流高频开关电源的设计摘要:就当前而言,开关的电源的发展方向为:高频、低耗能、噪音小以及抵抗干扰能力强等,这次设计的目的在于探索设计一款电源,它采用的是 36 伏/25 安高频直流开关,主要常用于通信系统。这篇论文采取先设计出此开关电源主电路,随后分析论证了如何在移相全桥电路中使用零电压软开关,这种开关技术用 PWM 移相进行控制,具体实现为来自于 UC3875 相移芯片的有相序特征的脉冲信号,进而可以刺激 MOSFET 管并使其开始工作。在本次设计中,进行了整流电路的有关研究,该整流电路用于电流输出,并同时也开展了相关的高频变压器的相关设计。其次是在设计过程中,考虑了对控制电路的设计,这种控制电路主要用于开关的通信电源,由 UC3875 相移芯片进行控制,以达到限制电流稳定电压的作用,控制系统主要采用闭环控制的方式进行。除此以外还设计了保护电路,主要用于防止超压、过电流保护,还设计了系统的过热处理等。再就是用仿真系统对设计系统进行了验证,用到的是 SABER 软件,最终验证设计不存在问题。关键词:软开关, UC3875,移相控制毕业设计(论文)外文摘要Title :Design of 36V15A DC high frequency switching power supplyAbstract:At present, the switching power supply is developing towards high frequency, high reliability, low power consumption, low noise, anti-interference and modularization. This paper designs a 36V/25A DC high frequency switching power supply which is often used in communication systemThe main circuit of this paper on the high frequency switching power supply is designed, analyzed the application of zero voltage soft switching technology in phase shifted full bridge circuit, soft switching technology with phase shifted PWM control, pulse to trigger the MOSFET tube has a certain phase by phase shifting chip UC3875. In the design of the main circuit, for the design of high frequency transformer, and the output rectifier circuit is analyzed, the research and design.Secondly, the control circuit of switch...