基于高端FPGA的IC验证平台的电源完整性(PI)分析  

Power integrity analysis of IC Verification Platform Based on High-Level FPGA

作　　者：郭叙海 

机构地区：[1]芯原微电子(上海)有限公司系统部

出　　处：《中国集成电路》2007年第8期37-41,共5页China lntegrated Circuit

摘　　要：通用的FPGA(Field Programmable Gate Array,现场可编程逻辑门阵列)验证平台在运行不同的应用时,其瞬态电流需求是不同的。本文以基于Xilinx公司的Virtex-4系列千万门级的FPGA高端IC验证平台为例,采用Cadence PCB PI(Power Integrity)分析软件,对多种地电平面、电容值、电容的放置位置、电容的类型等进行评估,然后通过修正电容数量和额定值,调整电容的布局以及封装等,达到符合要求的电源-地平面目标阻抗,从而将电源/地平面上的噪声降低到电源的要求范围内。本文提出的电源完整性分析方法,对其他类型的系统板级设计也有一定的指导意义。The transient current needed is different when generic FPGA veification platform run different application. By Cadence PCB PI tool, evaluating multi power and ground plane pairs, modifying capacitor type, quantity, value, footprint and placement of Ceramic High-frequency Capacitor and Electrolytic bulk capacitor, achieving target impedance of power＆ground plane, is discussed in this paper with high-level FPGA Verification platform based on Ten-million Gate-level Xilinx Virtex-4 FPGA as an example. It also suit for other-type system-level board design by Power Integrity analysis solution mentioned above.

关 键 词：瞬态电流 纹波电压 目标阻抗 去耦电容 电源完整性 

分 类 号：TN791[电子电信—电路与系统] TN407