首页>
外国专利>
POWER FACTOR CORRECTION (PFC) CONTROLLER AND BRIDGELESS PFC CIRCUIT WITH THE SAME
POWER FACTOR CORRECTION (PFC) CONTROLLER AND BRIDGELESS PFC CIRCUIT WITH THE SAME
展开▼
机译：具有相同功能的功率因数校正（PFC）控制器和无桥PFC电路
展开▼
页面导航
摘要
著录项
相似文献
摘要
A power factor correction (PFC) controller for controlling at least a switching unit is provided. The PFC controller has a feedback control circuit, a conductive current detecting circuit, and a switching control circuit. The feedback control circuit generates a feedback control signal for turning off the switch according to a feedback voltage signal. The conductive current detecting circuit has a clamp circuit, which generates a clamped signal restricted in a positive potential varying range according to a negative potential portion of a conductive-current detecting signal, and generates a cutoff signal for turning off the switch according to at least the clamped signal. The switching control circuit is utilized for controlling the switch according to the feedback control signal and the cutoff signal.
展开▼
