新型多路输出单端反激式开关电源设计

Design of Multiple Output Single-Ended Flyback Switching Power

开关电源是采用脉冲宽度调制(PWM)等技术控制开关电路构成的电能变换装置,它在直-直流和交-直流电能变换中的应用越来越广泛,它的功率可以小到数瓦甚至毫瓦级,也可以大到数百M瓦甚至G瓦。开关电源在电子、电器设备等领域广泛应用,它具有重量轻、体积小、发热量低、效率高、性能稳定、使用方便等优点,逐渐的取代了传统的线性稳压电源,是一种新式电源,是稳压电源的主导产品。该文设计的开关电源是基于集成开关电源芯片设计的三路输出小功率单端反激式开关电源。该电源有自动稳压、短路保护、过流保护、反馈补偿等保护电路,可增强电源工作的安全性和可靠性,具有较高的实用价值和良好的工程应用前景。

Switching power supply is the use of power conversion that means pulse width modulation(PWM)technology to controls the switch circuit,which is used more and more widely in transform from DC to AD,its power can be as small wattage even milliwatt and to be as large as several hundred megawatts or gigawatts.Also switching power supply is widely used in the field of electronic and electrical equipment and other places.Switching power supply has a light weight,small size,low heat,high efficiency,stable performance,ease of use,slowly replacing the traditional linear power supply,is a new type of power supply,power supply is the leading product.The graduation project is based on the popular switching power supply monolithic integrated switching power supply chip design triple output low-power single-ended flyback switching power supply.The power supply with automatic voltage,short circuit protection,overcurrent protection,feedback compensation circuit protection,can enhance the safety and reliability of power supply,with high practical value and good engineering applications.