一种兆赫兹级频率范围多相谐振电压整流模块的新颖控制策略  

A Novel Control Scheme for MHz Range Multiphase Resonant VRM

作　　者：陈威[1] 吕征宇[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027

出　　处：《中国电机工程学报》2008年第27期1-6,共6页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50677063ZD);台达电力电子科教发展基金项目(2006-2007)。~~

摘　　要：采用交错并联结构多相谐振型拓扑的DC-DC变流器具有更快的瞬态响应和更高的功率密度,因而非常适合作为电压整流模块(voltage regulator module,VRM)而为新一代微处理器提供电源,从而满足其飞速增长的高动态和高效率要求。为了解决交错并联结构多相谐振型VRM变流器在实际运用中遇到的控制难题,该文提出了一种新颖的控制策略思路。在任意情况下,该策略均能实现每一相驱动信号的频率自动跟踪一个中心频率而变化,并保持和该中心频率的相位角固定不变,从而在电路构造简单和低成本的优势下实现多相信号的调制。同时,该控制策略还具有极佳的可扩展性,易于构造成为任意相数从而配合主电路拓扑的需要。该文在给出了详细分析设计思路后,用频率高达1.1MHz的实验结果和实际样机数据及波形验证了所提控制策略的有效性和实用性。因此,该新颖的控制策略非常有利于多相交错并联结构的谐振型VRM在新一代微处理器架构中的实际应用。The interleaved multiphase resonant topology is very attractive for VRM （voltage regulator module） since faster transient response and higher power density are required to meet the increasingly high demands of speed and efficiency for the next generation microprocessors. However, to solve the control strategy issue for the interleaved multiphase resonant VRM, a novel control scheme was proposed. The driving signals of this scheme can automatically track the frequency of a central main signal, while maintains a locked shifted-phase angle to provide each phase＇s driving signal under all conditions, with a very simple circuit configuration and realization of cost-effective. In addition, the proposed scheme has a good ability of expanding to an n-phases interleaved VRM conveniently. Then the detail design process was also presented. A prototype was built and the results confirmed the validity and applicability of the proposed control scheme, while the highest frequency reaches to 1.1 MHz. Therefore, the merits of the proposed scheme can endow interleaved multiphase resonant VRM be more suitable for the next generation microprocessors.

关 键 词：多相电感-电感-电容谐振变流器 控制策略 兆赫兹级频率范围 电压整流模块 电流纹波滤除 

分 类 号：TM46[电气工程—电器] TM13