摘要
建立了同步整流反激变换器的损耗模型。对主要开关器件同步整流功率MOSFET和开关功率MOSFET工作过程中的各种损耗因素进行了分析,同时分析了变压器、滤波电容等其他主要元件的损耗模型及其相关影响因素。利用MathCAD软件,对同步整流反激变换器的损耗进行具体的实例分析,并通过实验验证损耗模型分析的有效性。
The power dissipation model of synchronous rectification flyback converters was established. The various power dissipation factors in operating process of power MOSFET of synchronous rectification for main switch ing device and switched power MOSFET were analyzed in detail. At the same time, the power dissipation model and related affecting factors of transformer, filter capacitor and other main components were analyzed theoretically. Using MathCAD software, the concrete sample analysis of power dissipation for synchronous rectification flyback converter was carried out, and the validity of power dissipation model analysis was verified by experiments.
出处
《低压电器》
北大核心
2006年第8期50-54,58,共6页
Low Voltage Apparatus
基金
教育部留学回国人员科研启动基金
福建省科技厅重点资助项目(2004H056)
关键词
反激变换器
同步整流
损耗模型
flyback converter
synchronous rectification
power dissipation model
