High Efficiency and Low Noise Charge Pump Circuits for Non-volatile Memories PDF Download

Author: Mengshu Huang
Publisher:
ISBN:
Category :
Languages : en
Pages : 90

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Author: Primit Modi
Publisher:
ISBN:
Category : On-chip charge pumps
Languages : en
Pages : 166

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Book Description
"Modern integrated microsystems have several functional blocks which require different voltages to operate adequately. Charge pump circuits are used to generate different voltages to operate adequately. Charge pump circuits are used to generate different voltage domains for different functional blocks on large integrated microsystems. Charge pump is an inductorless DC-DC converter which generates higher positive voltage or lower negative voltage from the applied reference voltage. The thesis presents a high power-efficiency charge pump architecture with low output ripple noise in AMI 0.5 [micron] CMOS process technology. The switching action of the proposed charge pump architecture is controlled by a dual phase non-overlapping clock system. In order to achieve high power-efficiency, the power losses due to the leakage currents, the finite switch resistance and the imperfect charge transfer between the capacitors are taken into consideration and are minimized by proper switching of the charge transfer switches. The proposed charge pump can operate over the wide input voltage range varying from 3 V to 7 V with the power conversion efficiency of 90%. The loading current drive capability of the proposed charge pump ranges from 0 to 45 mA."--Abstract.

Author: Andrea Ballo
Publisher: Springer Nature
ISBN: 3031435974
Category : Technology & Engineering
Languages : en
Pages : 171

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Book Description
This book enables readers to gain a deep understanding of the challenges related to the design of a charge pump (CP). Analysis, modeling, design strategies and topologies are treated in detail. Novel and high-performance CP topologies and related design are organized in a coherent manner, with particular care devoted to ultra-low power and energy harvesting applications. The authors provide basic theoretical foundations as needed, in order to set the stage for readers’ comprehension of analyses and results. Exhaustive methodologies are presented and analytical derivations are included, enabling readers to gain insight on the main dependencies among the relevant circuit parameters. Although the material is presented in a formal and theoretical manner, emphasis is on the design perspective, using many practical examples and measured results.

Author: Toru Tanzawa
Publisher: Springer Science & Business Media
ISBN: 1461438497
Category : Technology & Engineering
Languages : en
Pages : 196

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Book Description
This book provides various design techniques for switched-capacitor on-chip high-voltage generators, including charge pump circuits, regulators, level shifters, references, and oscillators. Readers will see these techniques applied to system design in order to address the challenge of how the on-chip high-voltage generator is designed for Flash memories, LCD drivers, and other semiconductor devices to optimize the entire circuit area and power efficiency with a low voltage supply, while minimizing the cost.

Author:
Publisher:
ISBN:
Category : Electronics
Languages : en
Pages : 1116

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Book Description

Author: Ryan Perigny
Publisher:
ISBN:
Category : Charge transfer devices (Electronics)
Languages : en
Pages : 124

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Book Description
In this thesis, the literature relating to charge pump dc-dc converters and their uses is reviewed. Charge pumps are useful in many circuits, including low-voltage circuits, dynamic random access memory circuits, switched-capacitor circuits, EEPROM's and transceivers. The important issues relating to charge pump design are power efficiency, output voltage ripple and area efficiency. This thesis describes the operation of three types of charge pump circuits. Power efficiency theory of charge pumps is discussed in detail. A method of estimating the output ripple of a charge pump from the size of the capacitors used is described. The optimal distribution of available capacitance for minimizing output ripple or maximizing power efficiency is derived. The tradeoffs between output ripple, power efficiency and total capacitance are discussed. The considerations involved in the design of charge pump circuits are described. A new charge pump circuit that uses two cascoded buffer transistors to improve the area efficiency is proposed. An implementation consisting of one of each of the three types of charge pumps was simulated for a 0.35-micron CMOS process. The simulation results verify the improved area efficiency of the double cascode charge pump.

Author: An Chen
Publisher: John Wiley & Sons
ISBN: 1118447743
Category : Technology & Engineering
Languages : en
Pages : 570

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Book Description
Emerging Nanoelectronic Devices focuses on the future direction of semiconductor and emerging nanoscale device technology. As the dimensional scaling of CMOS approaches its limits, alternate information processing devices and microarchitectures are being explored to sustain increasing functionality at decreasing cost into the indefinite future. This is driving new paradigms of information processing enabled by innovative new devices, circuits, and architectures, necessary to support an increasingly interconnected world through a rapidly evolving internet. This original title provides a fresh perspective on emerging research devices in 26 up to date chapters written by the leading researchers in their respective areas. It supplements and extends the work performed by the Emerging Research Devices working group of the International Technology Roadmap for Semiconductors (ITRS). Key features: • Serves as an authoritative tutorial on innovative devices and architectures that populate the dynamic world of “Beyond CMOS” technologies. • Provides a realistic assessment of the strengths, weaknesses and key unknowns associated with each technology. • Suggests guidelines for the directions of future development of each technology. • Emphasizes physical concepts over mathematical development. • Provides an essential resource for students, researchers and practicing engineers.

Author: Sakshi Rajput
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659225413
Category :
Languages : en
Pages : 100

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Book Description
A Charge pump circuit provides a voltage that is higher than the voltage of the power supply or a voltage of reverse polarity. Increased voltage levels are obtained in a charge pump as a result of transferring charges to a capacitive load, and do not involve amplifiers or regular transformers. Charge pumps usually operate at a high- frequency level in order to increase their output power within a reasonable size of total capacitance used for charge transfer. This operating frequency may be adjusted by compensating for changes in the power requirements and saving the energy delivered to the charge pump. Among many approaches to the charge pump design, the switched-capacitor circuits such as Dickson charge pump are very popular, because they can be implemented on the same chip together with other components of an integrated system. An extensive research focused on the design and timing scheme of Dickson, Static, Dynamic charge pump had been accomplished. A better charge Pump is proposed which have a better gain and threshold than other charge pumps discussed.

Author: Kyle Whittaker
Publisher:
ISBN:
Category :
Languages : en
Pages : 110

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Book Description
With the growing popularity and use of devices under the great umbrella that is the Internet of Things (IoT), the need for devices that are smaller, faster, cheaper and require less power is at an all time high with no intentions of slowing down. This is why many current research efforts are very focused on energy harvesting. Energy harvesting is the process of storing energy from external and ambient sources and delivering a small amount of power to low power IoT devices such as wireless sensors or wearable electronics. A charge pumps is a circuit used to convert a power supply to a higher or lower voltage depending on the specific application. Charge pumps are generally seen in memory design as a verity of power supplies are required for the newer memory technologies. Charge pumps can be also be designed for low voltage operation and can convert a smaller energy harvesting voltage level output to one that may be needed for the IoT device to operate. In this work, an integrated FinFET (Field Effect Transistor) charge pump for low power energy harvesting applications is proposed. The design and analysis of this system was conducted using Cadence Virtuoso Schematic L-Editing, Analog Design Environment and Spectre Circuit Simulator tools using the 7nm FinFETs from the ASAP7 7nm PDK. The research conducted here takes advantage of some inherent characteristics that are present in FinFET technologies, including low body effects, and faster switching speeds, lower threshold voltage and lower power consumption. The lower threshold voltage of the FinFET is key to get great performance at lower supply voltages. The charge pump in this work is designed to pump a 150mV power supply, generated from an energy harvester, to a regulated 650mV, while supplying 1uA of load current, with a 20mV voltage ripple in steady state (SS) operation. At these conditions, the systems power consumption is 4.85uW and is 31.76% efficient. Under no loading conditions, the charge pump reaches SS operation in 50us, giving it the fastest rise time of the compared state of the art efforts mentioned in this work. The minimum power supply voltage for the system to function is 93mV where it gives a regulated output voltage of $25mV. FinFET technology continues to be a very popular design choice and even though it has been in production since Intel's Ivy-Bridge processor in 2012, it seems that very few efforts have been made to use the advantages of FinFETs for charge pump design. This work shows though simulation that FinFET charge pumps can match the performance of charge pumps implemented in other technologies and should be considered for low power designs such as energy harvesting.

Author: Massimo Alioto
Publisher: Springer
ISBN: 3319514822
Category : Technology & Engineering
Languages : en
Pages : 527

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Book Description
This book offers the first comprehensive view on integrated circuit and system design for the Internet of Things (IoT), and in particular for the tiny nodes at its edge. The authors provide a fresh perspective on how the IoT will evolve based on recent and foreseeable trends in the semiconductor industry, highlighting the key challenges, as well as the opportunities for circuit and system innovation to address them. This book describes what the IoT really means from the design point of view, and how the constraints imposed by applications translate into integrated circuit requirements and design guidelines. Chapter contributions equally come from industry and academia. After providing a system perspective on IoT nodes, this book focuses on state-of-the-art design techniques for IoT applications, encompassing the fundamental sub-systems encountered in Systems on Chip for IoT: ultra-low power digital architectures and circuits low- and zero-leakage memories (including emerging technologies) circuits for hardware security and authentication System on Chip design methodologies on-chip power management and energy harvesting ultra-low power analog interfaces and analog-digital conversion short-range radios miniaturized battery technologies packaging and assembly of IoT integrated systems (on silicon and non-silicon substrates). As a common thread, all chapters conclude with a prospective view on the foreseeable evolution of the related technologies for IoT. The concepts developed throughout the book are exemplified by two IoT node system demonstrations from industry. The unique balance between breadth and depth of this book: enables expert readers quickly to develop an understanding of the specific challenges and state-of-the-art solutions for IoT, as well as their evolution in the foreseeable future provides non-experts with a comprehensive introduction to integrated circuit design for IoT, and serves as an excellent starting point for further learning, thanks to the broad coverage of topics and selected references makes it very well suited for practicing engineers and scientists working in the hardware and chip design for IoT, and as textbook for senior undergraduate, graduate and postgraduate students ( familiar with analog and digital circuits).