低损耗准谐振反激变换器的实现

Achievement of Low Loss Quasi-resonant Flyback Converters

分析准谐振反激变换器的原理,及其存在的问题,介绍了NCP1207的特点,并利用NCP1207设计了一款准谐振反激开关电源。最终试验结果表明,该设计实现了功率管的软开关,而且效率高、可靠性高、电磁干扰低、低待机损耗。

Analyze quasi-resonant flyback converter principle and the problems which it exists, introduce the characteristics of NCP1207; design a quasi-resonant flyback switching power supply by using of NCP1207. Final test results show that the design has the power of soft-switch, and high efficiency, high reliability, low electromagnetic interference, low standby loss.