A 150W AC/DC converter with universal input and fixed output voltage is analyzed and then designed based on MC33262. The principle and structure of active power factor corrector (APFC) and MC33262 is discussed in this paper.

• 文中设计了一种采用功率因数校正专用芯片MC33262的宽电压输入范围、固定升压输出的150W的AC/DC变换器,详尽地分析和讨论了有源功率因数校正(APFC)控制技术原理、APFC硬件电路结构。