NCP1652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 NCP1652 is a highly integrated controller for implementing power factor correction (PFC) and isolated step down ac-dc power conversion in a single stage, resulting in a lower cost and reduced part count solution. This controller is ideal for notebook adapters, battery chargers and other off-line applications with power requirements between 75 W and 150 W. The single stage is based on the flyback converter and it is designed to operate in continuous conduction (CCM) or discontinuous conduction (DCM) modes.The NCP1652 increases the system efficiency by incorporating a secondary driver with adjustable nonoverlap delay for controlling a synchronous rectifier switch in the secondary side, an active clamp switch in the primary or both. In addition, the controller features a proprietary Soft-Skip™ to reduce acoustic noise at light loads. Other features found in the NCP1652 include a high voltage startup circuit, voltage feedforward, brown out detector, internal overload timer, latch input and a high accuracy multiplier.

特性 Features

Dual Control Outputs with Adjustable Non Overlap Delay for Driving a Synchronous Rectifier Switch, an Active Clamp Switch or Both
Improves Efficiency
Voltage Feedforward
Improves Loop Response
Frequency Jittering
Reduces EMI Signature
Proprietary Soft-Skip™ at Light Loads
Reduces Acoustic Noise
High Accuracy Multiplier
Reduces Input Line Harmonics
Brown Out Detector
Internal 150 ms Fault Timer
Independent Latch-Off Input Facilitates Implementation of Overvoltage and Overtemperature Fault Detectors
Single Stage PFC and Isolated Step Down Converter
Continuous or Discontinuous Conduction Mode Operation
Average Current Mode Control (ACMC), Fixed Frequency Operation
Adjustable Operating Frequency from 20 kHz to 250 kHz

应用 Application

High Current Battery ChargersFront Ends for Distributed Power SystemsHigh Power Solid State Lighting
Notebook Adapter

简介

NCP1652属于集成电路（IC）的PFC（功率因数校正）。由制造生产的NCP1652PFC（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。