摘要
介绍了一种新颖的电流临界导通(DCMboundary)的功率因数校正(PFC)芯片。它的主要特点是提高了高电压输入时的功率因数,减少了输入电流的总的谐波含量(THD),同时它还改善了启动时输出电压过冲和电路的动态性能。实验表明这种新颖的DCMboundaryPFC控制芯片实现了这些功能。
A novel DCM boundary power factor correction chip is introduced. It has some traits, such as improving the power factor at high input voltage and decreasing total harmonic distortion of input current. It still prevents the output voltage from overshooting at start-up and enhances the dynamic property of circuit. Experiment results show that these functions have been achieved with this novel DCM boundary chip.
出处
《电源技术应用》
2005年第3期55-58,共4页
Power Supply Technologles and Applications
关键词
零功率检测
跨导误差放大器
功率因数校正
启动时输出电压过冲保护
zero power detection
transconductance error amplifier
power factor correction
over voltage protection at start-up
