文档介绍：高功率因数开关电源设计
系(部):自动化系
专业班:0803班
姓名:
学号:
指导教师:
2012年12月1日
高功率因数开关电源设计
High power factor power design
摘要
功率因数设计是关键指标的电源、电源一贯重视开发技术问题。本文重点对当前流行的单片开关电源芯片为普遍的低功率开关电源的设计和制造。在这里,电源控制电路,28019可大大提高了功率因数。电源由6个部分交直流转换电路、电源转换电路、功率因数检测电路,全氟化碳的控制电路、数字集和测量电路、保护电路。交直流转换电路使用控制整流器,电源转换电路使用提高拓扑结构,这可以输出电压值是形式30到36。电源利用C8051F020,供应链管理能完成数字集和措施。该系统具有一定的优点:直观特性、稳定性好,显著提高功率因数。
关键词:boost拓扑结构功率因数检测 UCC28019 C8051F020
Abstract
Power factor is the key indicators of the power supply switch design, improving power factor is in the development of switch power supply has always attached great importance to the technical problems. Papers on the popular single piece of switch power supply chip, realize the small power, high power factor of the switching voltage stabilizer for the design and production. The design of high power factor control mode application switching power supply PFC, introduce pany the launch of new UCC28019 control chip, power factor close to 1. The power supply by AC-DC transform circuit, DC-DC transform circuit, control circuit and PFC power factor detection circuit, digital measurement show circuit protection circuit, ponents. Among them, the AC-DC transform circuit adopts bridge type is not in possession of rectifier way, DC-DC transform circuit topology structure by boost, which can realize 36 V voltage output, and use of C8051F020 SCM realizing output measurement display and power factor test showed that etc. Function. The power of the main advantage is: the function, intuitive, and good stability, voltage adjustment rate, the load rate are the prescribed scope within the power factor than traditional switching power supply is greatly improved.
Key words: boost topology power factor test UCC28019 C8051F020
目录
1 系统总体电路······················· 7
系统总体电路框架·················· 7
28019的说明··············· 7
DC-DC变换模块··················· 12
系统电路图······················13
小结··························13
2 功率因数检测························14
2