摘要
从电源完整性(PI)的角度分析了抑制同步开关噪声(SSN)的有效途径——降低芯片供电电源的输入阻抗。使用目标阻抗法,并对给定最大去耦电容容值种类的条件下,使用频域对数法进行电源地分配网络(PDN)的优化。以XX电子控制器的PCB板为例,使用Ansoft SIwave及Ansoft Designer仿真软件,对复杂高速PCB板PDN进行优化设计,并通过时域观察优化前后SSN的抑制情况。仿真结果表明:通过优化PDN能够有效降低SSN。
From the aspect of Power Integrity （ PI ） , the effective way of suppressing simultaneous switching noise （ SSN） is reduce chip’s input impedance. With the method of target impedance determined by the number of decoupling capacitance which frequency domain logarithmic is used to optimize power delivery network （ PDN ） . Based on XX-electronic-controller PCB,a high-speed complicated PCB’ PDN is analyzed and optimized by Ansoft SIwave and using time-domain observes the inhibition of SSN by Ansoft Designer. The simulation resultes show that the optimization of power distribution network can reduce SSN effectively.
出处
《电子器件》
CAS
北大核心
2014年第4期609-612,共4页
Chinese Journal of Electron Devices
