1、 装 订 线 第 1 页 共 27 页 摘要 高压电源在日常的生产、生活中有着广泛的应用，尤其在军事、医疗、射线类探测器和静电喷涂等技术领域。传统的高压电源多采用线性技术，这种结构形式造成电源变换效率低，体积大，重量沉，操作维修不方便。随着电源技术的发展，人们对高压电源的转换效率和带负载能力提出了更高的要求。 开关电源相对于线性电源有体积小，重量轻，效率高的优点，已经成为电源行业的主流形式。本论文设计研究了一种以单片机和脉宽调制（ PWM）技术为基础的高压开关电源。该电源由 飞思卡尔MC9S12XS128 单片机产生和控制 PWM 波形，采用全桥变换 ，经高频变压器升压，输出1000V 电压。
2、该电源采用数字调节，模数电路相互结合，具有输出电压高，纹波小，输出功率较高等优点。 关键词：开关电源 桥式变换器 高频变压器 单片机 Abstract High-voltage power supply is applied broadly in daily life and production, especially used in military, medical, class-ray detector and electrostatic spraying. Traditional high-voltage power supply mainly adopt technology of
3、 linear power supply such type of 装 订 线 第 2 页 共 27 页 structure makes the whole Efficiency of power supply below, large, heavy and operation and maintenance which is not convenient.With the development of power technology, people have a higher demand on the conversion efficiency of the the high-volta
4、ge power and load capacity.Switching power supply have the advantages of small size, light weight, high efficiency relative to the linear power.,it have become a mainstream form of the Power industry.This paper studies a single-chip design and pulse width modulation (PWM) technology-based high-volta
5、ge switching power supply.PWM waveform of the the power supply was generated and controlled by by Freescale MC9S12XS128 microcontroller，using full bridge,the high-frequency step-up transformer,1000V output voltage.The power supply with digital adjustment,modulus combined circuit,it has the advantage
6、 of a high output voltage, ripple, the higher power output and so on. Keywords: Switching power supply Bridge converter High-frequency transformer Microcontroller 目录 摘要 . 1 Abstract . 1 第 1 章 绪论 . 4 1.1 课题研究的背景 . 4 1.2 研究的目的及意义 . 5 1.2.1 课题研究的目的 . 5 1.2.2 课题研究 的意义 . 5 1.3 高频开关电源的发展情况 . 5 1.3.1 开关电源的发展情况 . 5
