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开关电源是一种高频电源变换电路。它既可以采用市电经整流、滤波后高效地产生一路或多路稳定的直流电压输出,甩掉体积大、重量重的工频变压器,同时也适用于以电池为电源而需要稳压的场合,满足于各类便携式电子产品的供电。从70年代开始,开关电源已用于彩色电视机、摄录象机、计算机、通信系统、仪器仪表行业,并且应用范围越来越广。随着半导体生产技术的发展,各种集成开关电源稳压器及集成开关电源控制器发展神速,已形成各种系列。其特点是:功能不断完善;性能不断提高;外围元件越来越少;尺寸及重量进一步减小;制作、调整简化;生产成本日益降低。开关电源种类繁多,功率范围极宽(从十分之几瓦到上千
Switching power supply is a high-frequency power conversion circuit. It can be used after the city electricity by the rectifier, filter and efficiently produce all the way or more stable DC voltage output, get rid of bulky, heavy weight power frequency transformer, but also applies to the battery power supply and the need for regulation of the occasion , Satisfied with the supply of various types of portable electronic products. From the 70s onwards, switching power supply has been used for color television sets, camcorders, computers, communications systems, instrumentation industry, and the application of more and more widely. With the development of semiconductor manufacturing technology, a variety of integrated switching power supply regulator and integrated switching power supply controller developed rapidly, has formed a variety of series. Its features are: continuous improvement of functions; performance continues to increase; fewer and fewer external components; size and weight to further reduce; production, adjustment simplified; production costs are declining. A wide range of switching power supplies, extremely wide power range (from a few tenths of watts to thousands