Abstract: To meet high efficiency, low cost and high reliability power requirements of high-performance computer system, 12V DC bus distributed power system was developed in this paper. The block diagram and operation principle of power supply for cabinet and motherboard were described. The voltage regulator module for processor in motherboard was analyzed in detail. Based on adaptive voltage position control, the small-signal model of voltage regulator module was presented, and output impedance and system control bandwidth were discussed. Following the proposed design guidelines of compensator, the experimental results demonstrate very good transient response. The application results show the proposed power supply can fully meet the power requirements of high-performance computer system.

Key words: high-performance computer, distributed power system, voltage regulator module, adaptive voltage position

摘要： 为了满足某高性能计算机系统高效率、低成本、高可靠的供电要求，采用了12V一级母线直流分布式供电系统进行设计。介绍了计算机柜和主板的电源设计框图和工作原理，对计算主板的电压调节模块进行了详细分析，建立了基于自适应电压定位控制的电压调节模块小信号模型，分析了输出阻抗和系统控制带宽，由此得出了补偿回路设计原则，最后实测了动态响应波形。应用结果表明，电源各项技术指标完全满足该系统供电要求。

关键词: 高性能计算机, 分布式供电系统, 电压调节模块, 自适应电压定位