摘要
本设计给出了以TI公司的PFC控制芯片UCC28019为核心的功率因数校正的基本原理和实现方法。系统主要由取样电路、功率因数校正以及控制和显示电路几个模块组成。该设计的特点在于首先通过监测电路对电路进行监测,然后根据监测结果,运用控制电路来调节PFC控制芯片UCC28019的电压误差放大器大小,从而稳定输出设定电压,通过调节电流误差放大器的输入来提高电源功率因数。
The design illustrates the basic principles and methods for the power factor correction of TI s PFC control chip,UCC28019,as the core.This system is mainly composed of sampling circuits,power factor correction,control and display circuit.The design has several characteristics,The monitoring circuit is to monitor circuit firstly,and then according to the monitoring results control circuit regulates the size of UCC28019 s voltage and current so as to enhance supply power factor.
出处
《微计算机信息》
2010年第1期137-138,187,共3页
Control & Automation
