临界不连续电流模式功率因数校正电路设计

Design of PFC Circuit Under Critical Discontinuous Current Mode

研究了电压型和电流型临界不连续电流模式的功率因数校正电路。采用MC332 6 0设计的 5 0 0WAC/DC变换器可以适应 90～ 2 6 5V电压变化范围 ,功率因数在 0 .

The critical discontinuous current mode power factor correction circuit has been studied. The control methods include voltage and current mode control. The 500W PFC circuit using MC33260 can adapt the universal voltage range of 90～265V,and the power factor of the circuit can arrive 0.98.