基于MC34063的高升压比单片开关电源设计研究  

A Study on the Design of MC34063-based High Step-up Ratio Monolithic Switch Power Supply

作　　者：亓晓彤 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《电气自动化》2014年第4期23-25,共3页Electrical Automation

摘　　要：针对直流开关电源设计中,在低输入直流电压下,以简单易行的方式获得高升压比直流输出的困难,使用在开关电源设计中广泛使用的MC34063单片电源控制芯片,通过增加高频升压变压器,给出了具有高升压比变换能力的升压型开关电源设计结果,具有电路结构简单,元件少,使用方便等优点,可用于仅有低压直流电源供电而需要较高直流电压输出的小功率应用场合。As it is difficult to obtain a DC output of high step-up ratio in a simple and practicable way under a low input DC voltage in the design of DC switch power supplies, MC34063, a monolithic power supply control chip extensively applied in the design of switch power supply, combined with a high-frequency boost transformer, give a boost switch power supply design with high step-up ratio, which, characterized through simple structure, limited number of elements and easy usage, is applicable to small power occasions where only low-voltage DC power supply is available and relatively high DC voltage output is needed.

关 键 词：单片开关电源 直流 直流升压变换器 高升压比 MC34063 高频变压器 

分 类 号：TP46[自动化与计算机技术]