摘要
主要介绍几种常见中小功率隔离型单级PFC的驱动电路拓扑,主要有Buck+Flyback、Boost+Flyback、Buck-Boost+Flyback电路,这些电路将AC-DC和DC-DC两级变换器集成在一起,既实现功率因数校正,又减少开关器件和控制电路,提高电路的效率。
Introduces several common LED driver circuits, such as Buck＋Flyback, Boost＋Flyback, Buck-Boost＋Flyback. Because the AC-DC and DC-DC are integrated together, not only realizes the Power Factor Correction, but also reduces the switching devices and the control cir- cuits, and improves the efficiency of the circuit.
出处
《现代计算机》
2017年第18期37-40,共4页
Modern Computer
