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。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,应用交错并联技术的多通道交错并联准方波拓扑在输入电压等于两倍输出电压时具有最优的性能。但低输入电压引入了输入滤波器过大等系统设计问题。为此给出了高输入电压、隔离式准方波电路的设计思路。分析表明,在结合磁集成技术后,这些隔离式准方波拓扑具有相当的应用价值。
The microprocessors return to low voltage and high current. This imposes difficulties on voltage regulator module (VRM) design. With the review of 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.
出处
《电源技术应用》
2003年第3期31-35,共5页
Power Supply Technologles and Applications
关键词
微处理器
电压调整模块
准方波整流
数据处理电路
电源模块
DC/DC converter
Voltage regulator module
Quasi square wave: Interleaving
Low-voltage/high-current
