摘要
开关电源在电源领域中以其高效率、低功耗、高能量密度、电压适用范围广等优点在各行各业得到大量的应用。然而,其输入电流并非跟踪电压变化,含有大量的奇次谐波电流,对电网造成大量的谐波污染。对比现有两级式和单级式两种形式的PFC电源,运用L6562A芯片将TOPswitch227功率集成芯片应用于两级式PFC电路中,简化了两级PFC电路结构,并通过实验验证了所研究电路的可行性。
Switching power supply is widely used in many fields for its high efficiency,low power consumption,highenergy density,and wide range of voltage. However,the input current could not track voltage＇s change,which con-tains a large number of odd harmonic currents,which cause a large number of harmonic pollution in the power net-work. Compare the existing two forms of double-stage and single-stage PFC（Power Factor Correction）power supply,L6562 A and TOPswitch227 power integrated chip are used in the two stage PFC circuit,and the structure of the twostage PFC circuit is simplified. The feasibility of the proposed circuit is verified by the experimental results.two stage PFCL6562 AflybackTOP switch
出处
《电子器件》
CAS
北大核心
2016年第5期1265-1269,共5页
Chinese Journal of Electron Devices
基金
中国博士后科学基金(20090261254)
