Study and Implementation of An Integrated Control Circuit for PFC and PWM

• Main Authors: Jun-Jie Liao, 廖俊傑
• Other Authors: Tsorng-Juu Liang
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/85408535070380942942

碩士 === 國立成功大學 === 電機工程學系碩博士班 === 93 === 　　In this thesis, the basic analog components and digital components are used to fulfill the function of pulse width modulation integrated circuit (PWM IC). The advantages of the combined control circuit of power factor corrector (PFC) and PWM are also discussed. The function of PWM IC is described and classified and then discrete components are used to design the function of PWM IC based on these information. The PWM control circuit is experimentally performed and is used to control converter and PFC separately. Finally, the PFC and PWM controllers are integrated together to control two stages power converter. The two stages power converter with input voltage range 90~130V and 12V/4A output is experimentally performed. The experimental results are used to verify the functionality of the proposed circuit and the maximum efficiency of the two-stage converter is 86%.