英语翻译电源是电子设备的必不可少的功能模块,其性能的优劣直接影响到电子设备的技术性能和可靠性.本文介绍了25V/1A的开

英语翻译
电源是电子设备的必不可少的功能模块,其性能的优劣直接影响到电子设备的技术性能和可靠性.
本文介绍了25V/1A的开关电源的结构、原理和设计过程等.整个电源由输入电路、整流电路、反馈电路、过压保护电路、过流保护电路、自恢复电路、输出电路等,还具有软启动功能.开关电源具有效率高、体积小、重量轻、可靠性高、负载分担容易等一系列特点.本课题采用的开关方式是全桥全控整流滤波,而且电源还运用了软开关技术,使它的损耗明显降低,DC-DC变换使用斩波升压电路来实现,转换效率高；选用小导通电阻、高开关速度的P60N06管为开关管、选用快速恢复二极管整流,减少反向导通时间,降低损耗.通过实验验证电路实现了设计要求的全部基本指标,并且DC-DC变换效率达到85%.电路设计还有很多不足,各项设计指标还有待进一步提高.

The power source is electronic installation's essential functional module,its performance fit and unfit quality immediate influence to electronic installation's technical performance and reliability.
This article introduced the 25V/1A switching power supply's structure,the principle and the design process and so on.The entire power source by the input circuit,the leveling circuit,the feedback circuit,the overvoltage protection electric circuit,the overflow protection circuit,from restores the electric circuit,the output circuit and so on,but also has the soft start function.The switching power supply has the efficiency to be high,the volume is small,the weight is light,the reliability is high,the load shares and so on easily a series of characteristics.This topic uses the switching mode is the entire bridge all controls the rectification filter,moreover the power source has also utilized the soft switch technology,causes its loss to reduce obviously,the DC-DC transformation use cuts the wave boosted circuit to realize,the structure is simple,the transfer efficiency is high; Selects the small breakover resistance,the high shutter speed P60N06 tube for the switching valve,to select the quick recovery diode rectification,reduces the reverse breakover time,reduces the loss.Has realized the design requirements through the experimental verification electric circuit completely the basic quota,and the DC-DC conversion efficiency achieves 85%.The circuit design also has many insufficiencies,each design target also waits for further enhancing.