摘要
分析了开关电源功率因数低的原因及对电网的影响,在此基础上,设计了一种有源功率因数校正电路。该电路采用了功率因数校正器件UC3854,经实验验证,该校正电路可使功率因数达到0.99以上,并把电源输入电流的波形失真减小到5%以下,减少了开关电源对电网的污染。详细介绍了所用IC芯片和电路设计要点。
The reason of the low power factor in the switching mode power supply and the influence for the electrical network are analysed. On the base of it, an active power factor corrector circuit is designed. UC3854 is a new power factor corrector device in the circuit. The experimental results verify that the power factor can be increased above 0.99 and the input current distortion can be decreased 5%. The IC and the points of the circuit design are indroduced.
出处
《电源技术应用》
2007年第10期13-17,共5页
Power Supply Technologles and Applications
