带Boost型PFC和单开关DC／DC变流器的优越的1000W AC／DC电源能够替代有多开关拓扑的电源

Outstanding 1000W AC/DC Power Supply with Boost RFC and Single Switch DC/DC Converter can Replace Supplies Including Multi-Switch Topologies

本文分析了一个由Boost型PFC和前向变流器组成的单开关SMPS的电能容量。由于使用了现代无源和有源设备 (磁性材料,半导体),这种拓扑的电能应用范围延伸到了通常应用多开关拓扑的领域(大约1kW)。文章对现今关于简单SMPS拓扑的限制进行了理论分析,实际设计,并对一个变流器进行测试。文章最后提出了一些单开关电源拓扑的设计原则。

The power capability of a single switch SMPS consisting of a boost PFC and a forward converter is analyzed. Using modern passive and active devices （magnetic material, semiconductors） the power range of the topology is extended to application areas where usually multi switch topologies are used （approx. lkW）. Today＇s limits concerning the use of simple SMPS topologies are shown by theoretical analysis and practical design and test of a converter. In the end several design rules for simole single switch power supply topologies can be deduced.