开关稳压电源的设计-毕业设计

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1、 共 45 页 第 1 页 摘摘 要要 稳压电源是实现电能变换和功率传递的主要设备。在信息时代，农业、能 源、交通运输、通信等领域迅猛发展，对电源产业提出个更多、更高的要求， 如节能、节材、减重、环保、安全、可靠等。这就迫使电源工作者不断的探索 寻求各种乡关技术，做出最好的电源产品，以满足各行各业的要求。开关电源 是一种新型的电源设备，较之于传统的线性电源，其技术含量高、耗能低、使 用方便，并取得了较好的经济效益。 本文在介绍了开关电源的各种工作方式、其优劣势、设计方法及未来发展 方向等的基础上，对开关稳压电源进行设计。设计分为三个模块进行，分别为 辅助电源模块、PWM 控制模块、升压电路部分

2、，其中 PWM 控制电路为电源设 计的核心。确定电路设计方案后，使用 Multisim 10 对电路进行仿真，并对电路 的参数进行配比，尽量使电路的参数达到最佳、使输出电压趋于稳定，从而达 到设计要求。 关键词：开关电源，稳压，脉宽调制，功率 共 45 页 第 2 页 ABSTRACAT Power is to achieve power conversion and power transmission major equipment. In the information age, agriculture, energy, transportation, communications an

3、d other areas Power of the source industry make a greater and higher requirements，such as energy, materials, weight reduction, environmental protection, safety and reliability. This has forced the power workers have been exploring the technology for a variety of rural customs, the power to make the

4、best products to meet the requirements of all walks of life. Switching power supply is a new type of power supply, compared to traditional linear power supply, high technology, low energy consumption, easy to use, and has achieved good economic results. This paper describes the various switching power supply works, its advantages and disadvantages, design and direction of future development, based on the design of the switching power supply. Design is divided into three modules, namely, aux