NCP1680AB集成电路（IC）的PFC（功率因数校正）规格书PDF中文资料

NCP1680AB属于集成电路（IC）的PFC（功率因数校正）。由安森美半导体公司制造生产的NCP1680ABPFC（功率因数校正）功率因数校正 (PFC) 是用于调整交流电路中的电压和电流之间的相位角，使之趋近于零的半导体器件。不同模式包括平均电流、边界导通、连续导通、临界导通、电流控制式频率折返、不连续和不连续导通，开关频率从 6 kHz 至 1.7 MHz 可调。

Features

• Totem Pole PFC Topology Eliminates Input Diode Bridge Enabling

Very High Efficiency & Compact Design

• AC Line Monitoring Circuit & AC Phase Detection

• Brownout Detection

• Critical Conduction Mode (CrM) Operation

• Discontinuous Conduction Mode (DCM) with Valley Turn On under

Light Load Conditions

• Frequency Foldback in DCM with 25 kHz Minimum Frequency

• Digital Loop Compensation

• Simplified Valley Sensing

• Novel Current Limit Scheme Eliminates the Needs for Hall Effect

Sensors

• Soft Skip Mode with a Skip Flag for Optimizing Light Load

Performance

• Near Unity Power Factor in All Operating Modes

• PFCOK Indicator

Safety Features

• Soft and Fast Overvoltage Protection

• 2−Level Latch Input for OVP & OTP

• Bulk Undervoltage Protection

• Internal Thermal Shutdown

• Cycle−by−Cycle Current Limit