摘要
基于Buck Boost变换器工作的基本原理,提出了一种功率因数校正(PFC)和半桥输出相结合的电路结构;并给出了相应的控制方式。理论分析求出了电感取值的边界条件。由于该电路能够实现降压输出,因而降低了对所有功率开关管的耐压要求。
A circuit of Power-Factor-Control (PFC)in combination with a Half-Bridge output stage is proposed based on the working principle of Buck-Boost converter, and the control mode is also given. The theory analysis determines the boundary condition of the inductor. Since this circuit can reduce the output voltage, the requirement for the voltage sustain capability of all the power switches can be reduced accordingly.
出处
《电力电子技术》
CSCD
北大核心
2003年第6期17-19,52,共4页
Power Electronics
