NCP1654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 NCP1654 is a controller for Continuous Conduction Mode (CCM) Power Factor Correction Step up preconverters. It controls the power switch conduction time (PWM) in fixed frequency mode and is dependant on the instantaneous coil current. Housed in a SO-8 package the circuit minimizes the number of external components and drastically simplifies the PFC implementation. It also integrates high safety features that make the NCP1654 a driver for robust and compact PFC stages like an effective input power runaway clamping circuit.

特性 Features

• Very Few External Components
• helps in realizing a cost-effective solution
• Programmable Overcurrent Protection
• increases safety
• BrownOut Detection
• protection against low-mains and reduced stress on components
• Overvoltage Protection
• rugged design
• Soft Start
• reduces transient stress
• Continuous Conduction Mode
• Average Current-Mode or Peak Current-Mode Operation
• Programmable Overpower Limitation
• Undervoltage Detection for Open Loop Detection (shutdown)
• Inrush Currents Detection

应用 Application

• Power Factor Correction Stage
• Desktop PCs
• Servers

简介

NCP1654属于集成电路（IC）的PFC（功率因数校正）。由制造生产的NCP1654PFC（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。