NCP1655数据手册集成电路（IC）的PFC（功率因数校正）规格书PDF

描述 Description

The NCP1655 is an innovative multimode power factor controller. The circuit naturally transitions from one operation mode to another depending the switching period duration so that the efficiency is optimized over the line/load range. In every-light-load conditions, the circuit can enter the soft-SKIP mode for minimized losses.
Housed in a SO-9 package, then circuit further incorporates the features necessary for robust and compact PFC stages, with few external components.

特性 Features

• Multi-mode Operation
• Optimized Functioning over a large load range
• Frequency Foldback / Soft-SKIP mode
• Optimized light load Efficiency
• pfcOK Signal
• Simple Enabling/Disabling the Downstream Converter
• Complete protection features: OCP, OVP, BO, BVP...
• Minimized external components
• jittering in CCM
• easy design for EMI

应用 Application

• All Off Line Appliances Requiring Power Factor Correction
• High Power AC/DC Power Supply
• Industrial and Medical Power Supply
• Computing Power Supply
• Lighting Power Supply

简介

NCP1655属于集成电路（IC）的PFC（功率因数校正）。由制造生产的NCP1655PFC（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。