【作者】 秦海鸿； 张方华； 王慧贞；

【Author】 Qin hai hong Zhang fang hua Wang hui zhen Nanjing University of Aeronautics and Astronautics (210016)

【机构】 南京航空航天大学；

【摘要】 电压调整模块(VRM)是针对微处理器等典型数据处理电路开发的电源模块。本篇首先对VRM现在常用的拓扑进行了回顾,指出了其存在的缺陷,从而引入准方波整流电路,并对其工作原理进行了介绍。应用交错并联技术的多通道交错并联QSW拓扑在输入电压等于两倍输出电压时具有最优的性能。但低输入电压却引入了输入滤波器过大等系统设计问题。为此本文给出了高输入电压、隔离式QSW电路的设计思路。分析表明,在结合磁集成技术后,这些隔离式QSW拓扑具有很有吸引力的应用价值。更多还原

【Abstract】 The Microprocessors return to low voltage and high current. This imposes difficulties on Voltage Regulator Module(VRM) design. With the review of current VRM topologies, Quasi-Square-Wave (QSW) rectification is presented in detail. Considering the steady state ripple cancellation and transient response, it is ideal for the interleaving QSW VRM to have an input voltage equal to twice the output voltage. However, the low voltage will introduce many problems, especially at the input filter. To solve this problem, high input voltage, fast VRMs with a transformer are proposed. It is expected to have good transient performance and high efficiency, when incorporating integrated magnetics technology.更多还原