CAJ | 학술논문

应用于DC-DC变换器的传统拓扑中SEPIC（Single-Ended Primary Inductance Converter）拓扑既可以用于升压又可以用于降压,并且输出电压为正电压,具有启动时限制浪涌电流、较小输入电流纹波和低电磁干扰（Electromagnetic Interference,EMI）,具有谐波小等优点,但针对SEPIC拓扑的详细分析和建模相对较少,文中针对工作于电流临界模式（Critical Current Mode,CRM）的SEPIC线路进行了详细的分析,并对理论等式进行了详细推导,给出了简化的设计步骤,最后根据要求对SEPIC变换器进行了设计,并给出了仿真波形.
응용우DC-DC변환기적전통탁복중SEPIC（Single-Ended Primary Inductance Converter）탁복기가이용우승압우가이용우강압,병차수출전압위정전압,구유계동시한제랑용전류、교소수입전류문파화저전자간우（Electromagnetic Interference,EMI）,구유해파소등우점,단침대SEPIC탁복적상세분석화건모상대교소,문중침대공작우전류림계모식（Critical Current Mode,CRM）적SEPIC선로진행료상세적분석,병대이론등식진행료상세추도,급출료간화적설계보취,최후근거요구대SEPIC변환기진행료설계,병급출료방진파형.
The SEPIC topology of the DC-DC topology can work in passive voltage step-up or step-down mode.It has some desirable characters： small current harmonic wave,restraining in-rush current,and low electromagnetic-interface（EMI）.Few paper present the analysis and modeling in detail on SEPIC topology.This paper makes a detail analysis on SEPIC topology operating in critical current mode,and simplified design procedure is given.At last a SEPIC converter is designed according to the specification,and the simulation result is given.