一种用于BEM-02基站采集器的DC-DC高频开关电源

本文介绍采用美国Motorola公司生产的高性能PFC控制芯片MC33262P实现的DC-DC高频开关电源升压前置变换器的构成原理;采用CMOS芯片CD4093实现的高效变频控制DC-DC高频开关电源隔离变换器的原理。以上述两部分为主体构成的GY- 238型高频开关电源具有高可靠性、高效率、保护功能齐全、结构合理、体积小等优点,已广泛应用于移动通信BEM-02基站采集器中。经现场运行表明,该产品达到了预期的设计目的,已向全国通信行业推广,受到用户的一致好评。

A Kind of DO-DO HF Switching Power Supply Used for BEM-02 Base Station Collector

This paper introduces the step-up preconversion principle of DC-DC high freguency swithing power supply (HFSPS) which a- dopts PFC control chip MC33262P featuring high capacity and zero current manufactured by Motorola USA,the realization of high effi- ciency frequency converter controlled DC-DC HFSPS adopting COMS chip CD4093.It present the design process of HFSPS type GY- 238 used in communication BEM-02 base station collector which consists mainly of the two parts mentioned above,and the functions of integrated control and protection detecting signal and leakage protection.The features of the products which use this principle are high reliability,high efficiency,protective circuit complete,construction right,compact size and so on.The products have been applied in moving communication BEM-02 and collecting instrument of the base station.Through running,it has been proved that the functional object of the products have been finished.The products are commend by the users and it has been suggested to the communication de- partment of all the country to using the products.