Design Characterization And Compact Modeling Of Novel Silicon Controlled Rectifier Scr Based Devices For Electrostatic Discharge Esd Protection Applications In Integrated Circuits
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Design Characterization And Compact Modeling Of Novel Silicon Controlled Rectifier Scr Based Devices For Electrostatic Discharge Esd Protection Applications In Integrated Circuits
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Author : Lifang Lou
language : en
Publisher:
Release Date : 2008
Design Characterization And Compact Modeling Of Novel Silicon Controlled Rectifier Scr Based Devices For Electrostatic Discharge Esd Protection Applications In Integrated Circuits written by Lifang Lou and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Electric discharges categories.
Electrostatic Discharge (ESD), an event of a sudden transfer of electrons between two bodies at different potentials, happens commonly throughout nature. When such even occurs on integrated circuits (ICs), ICs will be damaged and failures result. As the evolution of semiconductor technologies, increasing usage of automated equipments and the emerging of more and more complex circuit applications, ICs are more sensitive to ESD strikes. Main ESD events occurring in semiconductor industry have been standardized as human body model (HBM), machine model (MM), charged device model (CDM) and international electrotechnical commission model (IEC) for control, monitor and test. In additional to the environmental control of ESD events during manufacturing, shipping and assembly, incorporating on-chip ESD protection circuits inside ICs is another effective solution to reduce the ESD-induced damage. This dissertation presents design, characterization, integration and compact modeling of novel silicon controlled rectifier (SCR)-based devices for on-chip ESD protection. The SCR-based device with a snapback characteristic has long been used to form a V[subscript SS]-based protection scheme for on-chip ESD protection over a broad rang of technologies because of its low on-resistance, high failure current and the best area efficiency. The ESD design window of the snapback device is defined by the maximum power supply voltage as the low edge and the minimum internal circuitry breakdown voltage as the high edge. The downscaling of semiconductor technology keeps on squeezing the design window of on-chip ESD protection. For the submicron process and below, the turn-on voltage and sustain voltage of ESD protection cell should be lower than 10 V and higher than 5 V, respectively, to avoid core circuit damages and latch-up issue. This presents a big challenge to device/circuit engineers. Meanwhile, the high voltage technologies push the design window to another tough range whose sustain voltage, 45 V for instance, is hard for most snapback ESD devices to reach. Based on the in-depth elaborating on the principle of SCR-based devices, this dissertation first presents a novel unassisted, low trigger- and high holding-voltage SCR (uSCR) which can fit into the aforesaid ESD design window without involving any extra assistant circuitry to realize an area-efficient on-chip ESD protection for low voltage applications. The on-chip integration case is studied to verify the protection effectiveness of the design. Subsequently, this dissertation illustrate the development of a new high holding current SCR (HHC-SCR) device for high voltage ESD protection with increasing the sustain current, not the sustain voltage, of the SCR device to the latchup-immune level to avoid sacrificing the ESD protection robustness of the device. The ESD protection cells have been designed either by using technology computer aided design (TCAD) tools or through trial-and-error iterations, which is cost- or time-consuming or both. Also, the interaction of ESD protection cells and core circuits need to be identified and minimized at pre-silicon stage. It is highly desired to design and evaluate the ESD protection cell using simulation program with integrated circuit emphasis (SPICE)-like circuit simulation by employing compact models in circuit simulators. And the compact model also need to predict the response of ESD protection cells to very fast transient ESD events such as CDM event since it is a major ESD failure mode. The compact model for SCR-based device is not widely available. This dissertation develops a macromodeling approach to build a comprehensive SCR compact model for CDM ESD simulation of complete I/O circuit. This modeling approach offers simplicity, wide availability and compatibility with most commercial simulators by taking advantage of using the advanced BJT model, Vertical Bipolar Inter-Company (VBIC) model. SPICE Gummel-Poon (SGP) model has served the ICs industry well for over 20 years while it is not sufficiently accurate when using SGP model to build a compact model for ESD protection SCR. This dissertation seeks to compare the difference of SCR compact model built by using VBIC and conventional SGP in order to point out the important features of VBIC model for building an accurate and easy-CAD implement SCR model and explain why from device physics and model theory perspectives.
Design Of Low Capacitance And High Speed Electrostatic Discharge Esd Devices For Low Voltage Protection Applications
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Author : You Li
language : en
Publisher:
Release Date : 2010
Design Of Low Capacitance And High Speed Electrostatic Discharge Esd Devices For Low Voltage Protection Applications written by You Li and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Electric capacity categories.
Electrostatic discharge (ESD) is defined as the transfer of charge between bodies at different potentials. The electrostatic discharge induced integrated circuit damages occur throughout the whole life of a product from the manufacturing, testing, shipping, handing, to end user operating stages. This is particularly true as microelectronics technology continues shrink to nano-metric dimensions. The ESD related failures is a major IC reliability concern and results in a loss of millions dollars to the semiconductor industry each year. Several ESD stress models and test methods have been developed to reproduce the real world ESD discharge events and quantify the sensitivity of ESD protection structures. The basic ESD models are: Human body model (HBM), Machine model (MM), and Charged device model (CDM). To avoid or reduce the IC failure due to ESD, the on-chip ESD protection structures and schemes have been implemented to discharge ESD current and clamp overstress voltage under different ESD stress events. Because of its simple structure and good performance, the junction diode is widely used in on-chip ESD protection applications. This is particularly true for ESD protection of low-voltage ICs where a relatively low trigger voltage for the ESD protection device is required. However, when the diode operates under the ESD stress, its current density and temperature are far beyond the normal conditions and the device is in danger of being damaged. For the design of effective ESD protection solution, the ESD robustness and low parasitic capacitance are two major concerns. The ESD robustness is usually defined after the failure current It2 and on-state resistance Ron. The transmission line pulsing (TLP) measurement is a very effective tool for evaluating the ESD robustness of a circuit or single element. This is particularly helpful in characterizing the effect of HBM stress where the ESD-induced damages are more likely due to thermal failures. Two types of diodes with different anode/cathode isolation technologies will be investigated for their ESD performance: one with a LOCOS (Local Oxidation of Silicon) oxide isolation called the LOCOS-bound diode, the other with a polysilicon gate isolation called the polysilicon-bound diode. We first examine the ESD performance of the LOCOS-bound diode. The effects of different diode geometries, metal connection patterns, dimensions and junction configurations on the ESD robustness and parasitic capacitance are investigated experimentally. The devices considered are N+/P-well junction LOCOS-bound diodes having different device widths, lengths and finger numbers, but the approach applies generally to the P+/N-well junction diode as well. The results provide useful insights into optimizing the diode for robust HBM ESD protection applications. Then, the current carrying and voltage clamping capabilities of LOCOS- and polysilicon-bound diodes are compared and investigated based on both TCAD simulation and experimental results. Comparison of these capabilities leads to the conclusion that the polysilicon-bound diode is more suited for ESD protection applications due to its higher performance. The effects of polysilicon-bound diode's design parameters, including the device width, anode/cathode length, finger number, poly-gate length, terminal connection and metal topology, on the ESD robustness are studied. Two figures of merits, FOM_It2 and FOM_Ron, are developed to better assess the effects of different parameters on polysilicon-bound diode's overall ESD performance. As latest generation package styles such as mBGAs, SOTs, SC70s, and CSPs are going to the millimeter-range dimensions, they are often effectively too small for people to handle with fingers. The recent industry data indicates the charged device model (CDM) ESD event becomes increasingly important in today's manufacturing environment and packaging technology. This event generates highly destructive pulses with a very short rise time and very small duration. TLP has been modified to probe CDM ESD protection effectiveness. The pulse width was reduced to the range of 1-10 ns to mimic the very fast transient of the CDM pulses. Such a very fast TLP (VFTLP) testing has been used frequently for CDM ESD characterization. The overshoot voltage and turn-on time are two key considerations for designing the CDM ESD protection devices. A relatively high overshoot voltage can cause failure of the protection devices as well as the protected devices, and a relatively long turn-on time may not switch on the protection device fast enough to effectively protect the core circuit against the CDM stress. The overshoot voltage and turn-on time of an ESD protection device can be observed and extracted from the voltage versus time waveforms measured from the VFTLP testing. Transient behaviors of polysilicon-bound diodes subject to pulses generated by the VFTLP tester are characterized for fast ESD events such as the charged device model. The effects of changing devices' dimension parameters on the transient behaviors and on the overshoot voltage and turn-on time are studied. The correlation between the diode failure and poly-gate configuration under the VFTLP stress is also investigated. Silicon-controlled rectifier (SCR) is another widely used ESD device for protecting the I/O pins and power supply rails of integrated circuits. Multiple fingers are often needed to achieve optimal ESD protection performance, but the uniformity of finger triggering and current flow is always a concern for multi-finger SCR devices operating under the post-snapback region. Without a proper understanding of the finger turn-on mechanism, design and realization of robust SCRs for ESD protection applications are not possible. Two two-finger SCRs with different combinations of anode/cathode regions are considered, and their finger turn-on uniformities are analyzed based on the I-V characteristics obtained from the transmission line pulsing (TLP) tester. The dV/dt effect of pulses with different rise times on the finger turn-on behavior of the SCRs are also investigated experimentally. In this work, unless noted otherwise, all the measurements are conducted using the Barth 4002 transmission line pulsing (TLP) and Barth 4012 very-fast transmission line pulsing (VFTLP) testers.
Esd
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Author : Steven H. Voldman
language : en
Publisher: John Wiley & Sons
Release Date : 2006-02-03
Esd written by Steven H. Voldman and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-02-03 with Technology & Engineering categories.
The scaling of semiconductor devices from sub-micron to nanometer dimensions is driving the need for understanding the design of electrostatic discharge (ESD) circuits, and the response of these integrated circuits (IC) to ESD phenomena. ESD Circuits and Devices provides a clear insight into the layout and design of circuitry for protection against electrical overstress (EOS) and ESD. With an emphasis on examples, this text: explains ESD buffering, ballasting, current distribution, design segmentation, feedback, coupling, and de-coupling ESD design methods; outlines the fundamental analytical models and experimental results for the ESD design of MOSFETs and diode semiconductor device elements, with a focus on CMOS, silicon on insulator (SOI), and Silicon Germanium (SiGe) technology; focuses on the ESD design, optimization, integration and synthesis of these elements and concepts into ESD networks, as well as applying within the off-chip driver networks, and on-chip receivers; and highlights state-of-the-art ESD input circuits, as well as ESD power clamps networks. Continuing the author’s series of books on ESD, this book will be an invaluable reference for the professional semiconductor chip and system ESD engineer. Semiconductor device and process development, quality, reliability and failure analysis engineers will also find it an essential tool. In addition, both senior undergraduate and graduate students in microelectronics and IC design will find its numerous examples useful.
Esd
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Author : Steven H. Voldman
language : en
Publisher: John Wiley & Sons
Release Date : 2015-04-24
Esd written by Steven H. Voldman and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-04-24 with Technology & Engineering categories.
ESD: Circuits and Devices 2nd Edition provides a clear picture of layout and design of digital, analog, radio frequency (RF) and power applications for protection from electrostatic discharge (ESD), electrical overstress (EOS), and latchup phenomena from a generalist perspective and design synthesis practices providing optimum solutions in advanced technologies. New features in the 2nd edition: Expanded treatment of ESD and analog design of passive devices of resistors, capacitors, inductors, and active devices of diodes, bipolar junction transistors, MOSFETs, and FINFETs. Increased focus on ESD power clamps for power rails for CMOS, Bipolar, and BiCMOS. Co-synthesizing of semiconductor chip architecture and floor planning with ESD design practices for analog, and mixed signal applications Illustrates the influence of analog design practices on ESD design circuitry, from integration, synthesis and layout, to symmetry, matching, inter-digitation, and common centroid techniques. Increased emphasis on system-level testing conforming to IEC 61000-4-2 and IEC 61000-4-5. Improved coverage of low-capacitance ESD, scaling of devices and oxide scaling challenges. ESD: Circuits and Devices 2nd Edition is an essential reference to ESD, circuit & semiconductor engineers and quality, reliability &analysis engineers. It is also useful for graduate and undergraduate students in electrical engineering, semiconductor sciences, microelectronics and IC design.
Esd In Silicon Integrated Circuits
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Author : E. Ajith Amerasekera
language : de
Publisher: John Wiley & Sons
Release Date : 2002-05-22
Esd In Silicon Integrated Circuits written by E. Ajith Amerasekera and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-05-22 with Technology & Engineering categories.
* Examines the various methods available for circuit protection, including coverage of the newly developed ESD circuit protection schemes for VLSI circuits. * Provides guidance on the implementation of circuit protection measures. * Includes new sections on ESD design rules, layout approaches, package effects, and circuit concepts. * Reviews the new Charged Device Model (CDM) test method and evaluates design requirements necessary for circuit protection.
On Chip Esd Protection For Integrated Circuits
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Author : Albert Z.H. Wang
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-01-03
On Chip Esd Protection For Integrated Circuits written by Albert Z.H. Wang and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-03 with Technology & Engineering categories.
This comprehensive and insightful book discusses ESD protection circuit design problems from an IC designer's perspective. On-Chip ESD Protection for Integrated Circuits: An IC Design Perspective provides both fundamental and advanced materials needed by a circuit designer for designing ESD protection circuits, including: Testing models and standards adopted by U.S. Department of Defense, EIA/JEDEC, ESD Association, Automotive Electronics Council, International Electrotechnical Commission, etc. ESD failure analysis, protection devices, and protection of sub-circuits Whole-chip ESD protection and ESD-to-circuit interactions Advanced low-parasitic compact ESD protection structures for RF and mixed-signal IC's Mixed-mode ESD simulation-design methodologies for design prediction ESD-to-circuit interactions, and more! Many real world ESD protection circuit design examples are provided. The book can be used as a reference book for working IC designers and as a textbook for students in the IC design field.
Esd
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Author : Steven H. Voldman
language : en
Publisher: John Wiley & Sons
Release Date : 2006-11-02
Esd written by Steven H. Voldman and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-11-02 with Technology & Engineering categories.
With the growth of high-speed telecommunications and wireless technology, it is becoming increasingly important for engineers to understand radio frequency (RF) applications and their sensitivity to electrostatic discharge (ESD) phenomena. This enables the development of ESD design methods for RF technology, leading to increased protection against electrical overstress (EOS) and ESD. ESD: RF Technology and Circuits: Presents methods for co-synthesizisng ESD networks for RF applications to achieve improved performance and ESD protection of semiconductor chips; discusses RF ESD design methods of capacitance load transformation, matching network co-synthesis, capacitance shunts, inductive shunts, impedance isolation, load cancellation methods, distributed loads, emitter degeneration, buffering and ballasting; examines ESD protection and design of active and passive elements in RF complementary metal-oxide-semiconductor (CMOS), RF laterally-diffused metal oxide semiconductor (LDMOS), RF BiCMOS Silicon Germanium (SiGe), RF BiCMOS Silicon Germanium Carbon (SiGeC), and Gallim Arsenide technology; gives information on RF ESD testing methodologies, RF degradation effects, and failure mechanisms for devices, circuits and systems; highlights RF ESD mixed-signal design integration of digital, analog and RF circuitry; sets out examples of RF ESD design computer aided design methodologies; covers state-of-the-art RF ESD input circuits, as well as voltage-triggered to RC-triggered ESD power clamps networks in RF technologies, as well as off-chip protection concepts. Following the authors series of books on ESD, this book will be a thorough overview of ESD in RF technology for RF semiconductor chip and ESD engineers. Device and circuit engineers working in the RF domain, and quality, reliability and failure analysis engineers will also find it a valuable reference in the rapidly growing are of RF ESD design. In addition, it will appeal to graduate students in RF microwave technology and RF circuit design.
Electrical Electronics Abstracts
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Author :
language : en
Publisher:
Release Date : 1997
Electrical Electronics Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Electrical engineering categories.
Esd
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Author : Steven H. Voldman
language : en
Publisher: John Wiley & Sons
Release Date : 2011-04-04
Esd written by Steven H. Voldman and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-04-04 with Technology & Engineering categories.
Electrostatic discharge (ESD) continues to impact semiconductor components and systems as technologies scale from micro- to nano-electronics. This book studies electrical overstress, ESD, and latchup from a whole-chip ESD design synthesis approach. It provides a clear insight into the integration of ESD protection networks from a generalist perspective, followed by examples in specific technologies, circuits, and chips. Uniquely both the semiconductor chip integration issues and floorplanning of ESD networks are covered from a ‘top-down' design approach. Look inside for extensive coverage on: integration of cores, power bussing, and signal pins in DRAM, SRAM, CMOS image processing chips, microprocessors, analog products, RF components and how the integration influences ESD design and integration architecturing of mixed voltage, mixed signal, to RF design for ESD analysis floorplanning for peripheral and core I/O designs, and the implications on ESD and latchup guard ring integration for both a ‘bottom-up' and ‘top-down' methodology addressing I/O guard rings, ESD guard rings, I/O to I/O, and I/O to core classification of ESD power clamps and ESD signal pin circuitry, and how to make the correct choice for a given semiconductor chip examples of ESD design for the state-of-the-art technologies discussed, including CMOS, BiCMOS, silicon on insulator (SOI), bipolar technology, high voltage CMOS (HVCMOS), RF CMOS, and smart power practical methods for the understanding of ESD circuit power distribution, ground rule development, internal bus distribution, current path analysis, quality metrics ESD: Design and Synthesis is a continuation of the author's series of books on ESD protection. It is an essential reference for: ESD, circuit, and semiconductor engineers; design synthesis team leaders; layout design, characterisation, floorplanning, test and reliability engineers; technicians; and groundrule and test site developers in the manufacturing and design of semiconductor chips. It is also useful for graduate and undergraduate students in electrical engineering, semiconductor sciences, and manufacturing sciences, and on courses involving the design of ESD devices, chips and systems. This book offers a useful insight into the issues that confront modern technology as we enter the nano-electronic era.
Nano Cmos Circuit And Physical Design
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Author : Ban Wong
language : en
Publisher: John Wiley & Sons
Release Date : 2005-04-08
Nano Cmos Circuit And Physical Design written by Ban Wong and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-04-08 with Technology & Engineering categories.
Based on the authors' expansive collection of notes taken over the years, Nano-CMOS Circuit and Physical Design bridges the gap between physical and circuit design and fabrication processing, manufacturability, and yield. This innovative book covers: process technology, including sub-wavelength optical lithography; impact of process scaling on circuit and physical implementation and low power with leaky transistors; and DFM, yield, and the impact of physical implementation.