摘要
本文论述一个新颖而简单的适用于各种类型硬开关功率转换器的电能回收电路,这个电路只需使用几个意法半导体的元器件:1个微型线圈、2个耦合辅助线圈、两个优化的PN结二极管。而且,这个电路完全兼容任何一种PWM控制器。本文论述这个成本最低且能效更高的独特电能回收电路的基本设计方法。为了突出这个拓扑的好处,在一个90V_(RMS)-264V_(RMS)的通用系列450W硬开关式功率因数校正器内,把这个电路与8A碳化硅肖特基二极管进行了比较,为了更全面客观的比较,使用了几个开关频率(72kHz、140kHz和200kHz)。比较结果显示,新电路的能效高于碳化硅肖特基二极管。此外,这个包括专用二极管和小线圈在内的整流级具有很高的成本效益,符合大众市场的预期。
The paper introduces a simple and novel energy-recycling circuit, which is applicable to all kinds of hard switch power convertor. Its circuit only needs several components by ST microelectronics, that is, one micro coil, two coupling auxiliary coils, two optimized PN diodes. In addition, it is compatible to any PWM controllers. The paper introduces basic design of the energy recycling circuit, which is of lowest cost and higher energy efficiency. In order to tell the advantages of the topology, it is compared with 8A carborundum SSD, under 450W switch power factor corrector, which is a general series with 90VRMs-264 VRMs. Several switch frequenceis （72kHz, 140kHz and 200kHz） are applied so that a comprehensive and objective comparison can be realized. Results show that the energy efficiency of the new circuit is higher than carborundum SSD. Besides, the rectifier level including specified diode and small coil has high cost benifits and＇can meet the market expectations.
出处
《电源世界》
2011年第12期33-39,共7页
The World of Power Supply
