首页> 外文会议>Electronic Components and Technology Conference, 1995. Proceedings., 45th >A simultaneous switching noise design algorithm for leadframepackages with or without ground plane
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A simultaneous switching noise design algorithm for leadframepackages with or without ground plane

机译:引线框架的同时开关噪声设计算法带或不带接地层的包装

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This paper provides design techniques for leadframe packages withor without a ground plane, which enable an accurate estimate of themaximum Simultaneous Switching Noise (SSN) and the required numbers ofpower and/or ground pins for pre-specified SSN limits early in thedesign phase. Two heuristic design approaches, namely equal-angle andquarter-plane, are proposed as initial design choices for the lead framedesign to meet pre-specified SSN constraint. Effects of the signalconductors in reducing the effective inductance of a leadframe packageare quantified. Closed-form equations and SPICE simulation are used tocalculate the Simultaneous Switching Noise. A design example for a28×28 mm Plastic Quad Flat Package (PQFP) is given to provideguidelines for SSN-constrained design. The design algorithm isintegrated into a CAD tool, UASSNS3.0, which is capable of initial SSNdesign of leadframe packages
机译:本文为引线套件提供了设计技术 或没有地面平面,可以准确估计 最大同步切换噪声(SSN)和所需数量 用于预先指定SSN限制的电源和/或接地引脚 设计阶段。两个启发式设计方法,即相等的角度和 四分比飞,建议作为引线框架的初始设计选择 设计满足预先指定的SSN约束。信号的影响 导体降低引线框架的有效电感 量化。闭合方程和Spice仿真用于 计算同时开关噪声。一个设计例 28×28 mm塑料四边形包装(PQFP)提供 SSN约束设计指南。设计算法是 集成到CAD工具,UASSNS3.0,其能够初始SSN 引线框架设计

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