Buck变换器的.doc

Buck变换器毕业论文 基于ARM的Buck变换器制作 摘 要 电子技术近年来发展迅猛，直流开关电源广泛应用于个人计算机、电信通信、电力系统、航空航天和生物医疗等领域，对开关电源的性能、功率密度、工作效率和可靠性都提出了更高的要求。BUCK变换器在电池供电的计算机，消费类产品等需多电源供电的电子系统中有着广泛的应用小型化成为必然的要求首先最后，在附录中，本文还将给出一些必要的系统设计资料，供参考之用。 关键词：， Based on the arm of the changes made a buck Abstract Electronic technology development in recent years, the dc power supply has the wide application in personal computers and telecom communications, the electrical system, air space and biological and medical fields, switching power supplies of power, performance, efficiency and reliability have made a higher demands. Buck change in the battery power of computer, and many consumer products have the power supply of electronic systems are widely used, advocate small-size become inevitable. To buck this transformation of the electrical circuits and hardware circuit discussed. First, buck to change the background and development in the paper. Secondly, the buck from the hardware design, stm32 processors, and internal structure, and to introduce major changes in the main circuits to introduce, power and driven circuit, power supply circuits, the protection circuit and the electrical and control, the principle of the circuit. current sensors.Thirdly, the circuit to make some brief description. Finally, in the annex, this will also give some necessary system design, data for reference only. Key words: Buck changes, hardware circuit stm32 processor, the circuit 目 录 1 1 1.1 课题背景介绍 1 1.2 课题研究状况 1 1.3 课题研究方法 2 2 STM32处理器 3 2.1 STM32处理器介绍 3 2.2 高级控制定时器(TIM1) 4 2.2.1 简介 4 2.2.2 主要特性 4 2.3 通用定时器(TIMx) 5 2.3.1 概述 5 2.3.2 主要特性 5 2.3.3 功能描述 6 2.4 模拟/数字转换(ADC) 7 2.4.1 介绍 7 2.4.2 主要特征 7 2.4.3 引脚描述 8 2.4.4 功能描述 9 3 11 3.1 Buck电路的开关过程分析 11 3.2 功率及驱动电路设计 12 3.2.1 IR2110简介 12 3.2.2 IR2110内部结构和特点 12 3.3 电源电路及保护电路设计 13 3.3.1 电源电路设计 14 3.3.2 保护电路设计 14 3.4 软开关电路及控制电路设计 18 3.5 电流传感器的电路设计 21 3.5.1 电流传感器的介绍 21 3.5.2 工作原理 21 3.5.3 模拟霍尔传感器SS495