Power Distribution Network Design For Vlsi

A hands-on troubleshooting guide for VLSI network designers The primary goal in VLSI (very large scale integration) power network design is to provide enough power lines across a chip to reduce voltage drops from the power pads to the center of the chip. Voltage drops caused by the power network's metal lines coupled with transistor switching currents on the chip cause power supply noises that can affect circuit timing and performance, thus providing a constant challenge for designers of high-performance chips. Power Distribution Network Design for VLSI provides detailed information on this critical component of circuit design and physical integration for high-speed chips. A vital tool for professional engineers (especially those involved in the use of commercial tools), as well as graduate students of engineering, the text explains the design issues, guidelines, and CAD tools for the power distribution of the VLSI chip and package, and provides numerous examples for its effective application. Features of the text include: * An introduction to power distribution network design * Design perspectives, such as power network planning, layout specifications, decoupling capacitance insertion, modeling, and analysis * Electromigration phenomena * IR drop analysis methodology * Commands and user interfaces of the VoltageStorm(TM) CAD tool * Microprocessor design examples using on-chip power distribution * Flip-chip and package design issues * Power network measurement techniques from real silicon The author includes several case studies and a glossary of key words and basic terms to help readers understand and integrate basic concepts in VLSI design and power distribution.

A series of cogently written articles by 49 industry experts, this collection fills the void on Power Distribution Network (PDN) design procedures, and addresses such related topics as DC–DC converters, selection of bypass capacitors, DDR2 memory systems, powering of FPGAs, and synthesis of impedance profiles. Through these contributions from such leading companies as Sun Microsystems, Sanyo, IBM, Hewlett-Packard, Intel, and Rambus, readers will come to understand why books on power integrity are only now becoming available to the public and can relate these topics to current industry trends.

As well as dealing with the planning and design of modern distribution systems, as opposed to more general aspects of transmission and generation, this second edition of Electricity Distribution Network Design (1989) updates its treatment of computer-based planning and reliability. It also covers the implications of international standards, network information systems and distribution automation.

The Faraday Press Edition of István Novák's historic Power Distribution Network Design Methodologies brings to print important coverage of power system design topics including circuit board layout strategies, capacitor characterization and selection, controlled impedance design and guidance for system-level engineering. Power Distribution Network (PDN) design procedures are covered in practical detail-covering topics including the buck converter topology, the proper selection and placement of bypass capacitors, power requirements of memory systems, powering FPGAs and designing/controlling wideband power delivery impedances. As clock speeds and power density requirements progress, the challenges of a robust system design becomes more and more important. Power Distribution Network Design is a valuable resource for the global community of power supply designers.

This book describes methods for distributing power in high speed, high complexity integrated circuits with power levels exceeding many tens of watts and power supplies below a volt. It provides a broad and cohesive treatment of power distribution systems and related design problems, including both circuit network models and design techniques for on-chip decoupling capacitors, providing insight and intuition into the behavior and design of on-chip power distribution systems. Organized into subareas to provide a more intuitive flow to the reader, this second edition adds more than a hundred pages of new content, including inductance models for interdigitated structures, design strategies for multi-layer power grids, advanced methods for efficient power grid design and analysis, and methodologies for simultaneously placing on-chip multiple power supplies and decoupling capacitors. The emphasis of this additional material is on managing the complexity of on-chip power distribution networks.

In the early days of VLSI, the design of the power distribution for an integrated cir cuit was rather simple. Power distribution --the design of the geometric topology for the network of wires that connect the various power supplies, the widths of the indi vidual segments for each of these wires, the number and location of the power I/O pins around the periphery of the chip --was simple because the chips were simpler. Few available wiring layers forced floorplans that allowed simple, planar (non-over lapping) power networks. Lower speeds and circuit density made the choice of the wire widths easier: we made them just fat enough to avoid resistive voltage drops due to switching currents in the supply network. And we just didn't need enormous num bers of power and ground pins on the package for the chips to work. It's not so simple any more. Increased integration has forced us to focus on reliability concerns such as metal elec tromigration, which affects wire sizing decisions in the power network. Extra metal layers have allowed more flexibility in the topological layout of the power networks.