PA-Cap聚合物电容器在模拟CPU电源中的应用  

The application of PA-Cap polymer capacitor in simulate CPU power supply

作　　者：陈由雄 林莹 

机构地区：[1]福建国光电子科技股份有限公司,福建福州350015

出　　处：《电子元件与材料》2008年第8期36-38,共3页Electronic Components And Materials

基　　金：国家科技型中小企业技术创新基金资助项目(No.05C26113500892)

摘　　要：在计算机CPU的电源电路中,采用电解电容器作为电源的去耦电容。研究了CPU的负载高速变化时,三种类型电容器提供瞬时电流以稳定电源电压的情况。结果显示:PA-Cap聚合物片式叠层铝电解电容器(56μF)的Res为23mΩ,△V为–90mV,而220μF钽电容Res为73mΩ,△V为–172mV,1000μF液体铝电解电容Res为56mΩ,△V为–232mV。因此,PA-Cap聚合物电容器用在开关电源和数字电路中应用前景广阔。In the computer CPU power circuit, electrolytic capacitors are used as decoupling capacitors of power. When the CPU load varies at a high speed condition, three types of capacitors were investigated to provide instantaneous current for stabilization of power voltage. The results show that PA-Cap multilayer polymer aluminum electrolytic capacitors has the extremely small Res value and the very high conductivity. The Res （23 mΩ） and △V （-90 mV） of 56 μF polymer capacitor are better than 220 μF Ta capacitor and AI electrolytic capacitor. Therefore, PA-Cap polymer capacitors to use in the switching power supply and the digital circuit is the best choice.

关 键 词：电子技术 CPU PA—Cap聚合物电容器 去耦电容 电源 负载 

分 类 号：TM535[电气工程—电器]