Fully Integrated Switched Capacitor Buck Converter With High Efficiency And Low Output Ripple
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Fully Integrated Switched Capacitor Buck Converter With High Efficiency And Low Output Ripple
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Author : Sudhir Reddy Gouni
language : en
Publisher:
Release Date : 2012
Fully Integrated Switched Capacitor Buck Converter With High Efficiency And Low Output Ripple written by Sudhir Reddy Gouni and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with DC-to-DC converters categories.
A Low Ripple Fully Integrated Switched Capacitor Buck Converter Employing Time Interleaving And Pulse Frequency Modulation Techniques
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Author : Anurag Veerabathini
language : en
Publisher:
Release Date : 2014
A Low Ripple Fully Integrated Switched Capacitor Buck Converter Employing Time Interleaving And Pulse Frequency Modulation Techniques written by Anurag Veerabathini and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Electric current converters categories.
A fully-integrated switched capacitor buck converter implemented in the ON-Semi 0.5-[mu]m technology, that converts a 3.3 VDC to 1.5 VDC while driving up to a 8-mA current load. A symmetric charge-discharge topology for capacitors is devised for low ripple. Ultra-low output ripple is achieved through time-interleaving. It is observed in simulation that a ripple of 100 mV on a baseline design can be reduced to 6 mV by implemented 4-phase time-interleaving with a symmetric topology. To achieve high efficiencies at lower loads, a burst-mode pulse-frequency modulation (PFM) technique is implemented. A multi-layer layout technique is used for bucket capacitor to reduce the effect to parasitic capacitances, thereby increasing the efficiency of the circuit. To integrate more capacitance in less area on-chip, the tank capacitor is implemented as a MOSCAP. Maximum measured efficiency of 68% is achieved at 8 mA current load. Measured output voltage ripple less than 28 mV is maintained for current loads between 8 mA and 500 [mu]A.
Fully Integrated Cmos Switched Capacitor Buck Converter Using Three Switching Networks For High Efficiency Over A Wide Range Of Line Voltage
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Author : Muhammed Junayet Hossain
language : en
Publisher:
Release Date : 2014
Fully Integrated Cmos Switched Capacitor Buck Converter Using Three Switching Networks For High Efficiency Over A Wide Range Of Line Voltage written by Muhammed Junayet Hossain and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Electric current converters categories.
A fully-integrated switched-capacitor DC-DC buck converter is designed in 0.5[mu]m CMOS process for low line regulation from 2.5 VDC to 4.5 VDC that converts to an output voltage of 1.2 ± 0.15 V. This integrated system achieves a maximum efficiency of 70%. The total integrated capacitance is 1.6 nF and the ripple of the output voltage varies from 30 mV to 93 mV. The entire system is built up using transfer capacitors, NMOS capacitor as the load capacitor, CMOS switches, clocked-comparators, various logic gates with driver cells, a clock generator and voltage dividers. The load current is fixed at 3 mA. To achieve low line regulation, three switching networks (2 : 1, 5 : 2, and 3 : 1) are implemented in the system. A multi-layer technique is applied to the layout of the transfer capacitors that helps to reduce parasitic capacitances, thereby improving converter efficiency, and achieve smaller size.
Power Systems On Chip
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Author : Bruno Allard
language : en
Publisher: John Wiley & Sons
Release Date : 2016-11-22
Power Systems On Chip written by Bruno Allard 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 2016-11-22 with Science categories.
The book gathers the major issues involved in the practical design of Power Management solutions in wireless products as Internet-of-things. Presentation is not about state-of-the-art but about appropriation of validated recent technologies by practicing engineers. The book delivers insights on major trade-offs and a presentation of examples as a cookbook. The content is segmented in chapters to make access easier for the lay-person.
Integrated Hybrid Resonant Dcdc Converters
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Author : Peter Renz
language : en
Publisher: Springer Nature
Release Date : 2020-12-29
Integrated Hybrid Resonant Dcdc Converters written by Peter Renz and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-29 with Technology & Engineering categories.
This book provides a comprehensive, single-source on resonant switched-capacitor converters. It is written in the style of a handbook, with systematic guidelines, and includes implementation examples. The authors explore integrated hybrid resonant DCDC converters in order to achieve highly compact, energy efficient and cost-effective power management solutions in the growing fields of wearables and internet-of-things applications. They provide an introduction into hybrid converters as a new and promising converter class, which merges capacitive and inductive conversion concepts into one. Coverage ranges from fundamentals to implementation details, including topics such as power stage design, gate drive schemes, different control mechanisms for resonant operation and integrated passives. Introduces a new, multi-ratio resonant converter architecture, which enables lower switching frequencies and better passive component utilization; Discusses circuit block design for high efficiency of the power stage; Explores implementation details and concepts for integrated passives; Derives models, implements and compares to each other different control mechanisms.
Switched Capacitor Based Dc Dc Converter With Ultra High Efficiency Power Density And Voltage Regulation Capability
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Author : Deepak Gunasekaran
language : en
Publisher:
Release Date : 2018
Switched Capacitor Based Dc Dc Converter With Ultra High Efficiency Power Density And Voltage Regulation Capability written by Deepak Gunasekaran and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Electronic dissertations categories.
High Ratio Voltage Conversion In Cmos For Efficient Mains Connected Standby
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Author : Hans Meyvaert
language : en
Publisher: Springer
Release Date : 2016-05-24
High Ratio Voltage Conversion In Cmos For Efficient Mains Connected Standby written by Hans Meyvaert and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-24 with Technology & Engineering categories.
This book describes synergetic innovation opportunities offered by combining the field of power conversion with the field of integrated circuit (IC) design. The authors demonstrate how integrating circuits enables increased operation frequency, which can be exploited in power converters to reduce drastically the size of the discrete passive components. The authors introduce multiple power converter circuits, which are very compact as result of their high level of integration. First, the limits of high-power-density low-voltage monolithic switched-capacitor DC-DC conversion are investigated to enable on-chip power granularization. AC-DC conversion from the mains to a low voltage DC is discussed, enabling an efficient and compact, lower-power auxiliary power supply to take over the power delivery during the standby mode of mains-connected appliances, allowing the main power converter of these devices to be shut down fully.
Switching Power Converters
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Author : Peter Wood
language : en
Publisher:
Release Date : 1985
Switching Power Converters written by Peter Wood and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Technology & Engineering categories.
Dc Dc Converters For Future Renewable Energy Systems
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Author : Neeraj Priyadarshi
language : en
Publisher: Springer Nature
Release Date : 2021-09-27
Dc Dc Converters For Future Renewable Energy Systems written by Neeraj Priyadarshi and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-27 with Technology & Engineering categories.
The book presents the analysis and control of numerous DC-DC converters widely used in several applications such as standalone, grid integration, and motor drives-based renewable energy systems. The book provides extensive simulation and practical analysis of recent and advanced DC-DC power converter topologies. This self-contained book contributes to DC-DC converters design, control techniques, and industrial as well as domestic applications of renewable energy systems. This volume will be useful for undergraduate/postgraduate students, energy planners, designers, system analysis, and system governors.
The Art Of Voltage Boosting Part I
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Author : Bin Wu
language : en
Publisher:
Release Date : 2016
The Art Of Voltage Boosting Part I written by Bin Wu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Voltage boosting is required in many energy conversion applications, ranging from front-end solar energy system to Medium-Voltage DC (MVDC)-grid system, and from headlamp ballast of automobile to fuel cell powered system. This dissertation is dedicated to the development of voltage boosting technology. New circuits were found both in switched capacitor converters and inductor-based power converters. The former has the potential of full integration while the latter has combined the merits of conventional magnetic components and switched capacitor stages, leading to a new hybrid converter category. These contributions are captured in two major parts respectively: The first part discusses the switched capacitor converters and new discovery in voltage boosting technology as well as modeling technique. The second part introduces a number of new topologies and extensions in hybrid boosting converters.Part I.Switched Capacitor Converter (SCC) is a special branch of power electronics converters which is composed of capacitors and switches without the participation of inductors/transformers. It potentially has lower electromagnetic interference (EMI), lighter weight, lower cost, higher energy density, and the promise for full integration.In this part, a family of "Two-switch Boosting Switched-capacitor Converters (TBSC)" is introduced, which distinguishes itself from the prior arts by its symmetrical interleaved operation, reduced output ripple, low yet even voltage stress on components, and systematic expandability. Along with the topologies, a modeling technique based on charge-balance transient-calculation is formulated, which provokes the converter regulation method through duty cycle and frequency adjustment. The design guideline for high efficient TBSC is provided and regulation under high power condition is explored.In addition, an enhanced accurate modeling technique considering the output capacitor effect is developed for simple two-phase SC converters.Part II.Built upon the momentum of the "Two-switch Boosting Switched-capacitor Converters (TBSC)" circuit structure, another family of Hybrid Boosting Converters (HBC) is developed, featuring wide regulation range, symmetrical configuration, low component voltage stress, small output voltage ripple, and expandable structure. It integrates the inductive switching cores of various functionalities and control strategies with Bipolar Voltage Multiplier (BVM), resulting in the new breed of hybrid converters: Hybrid Boosting Converters (HBC). The proposed HBC family includes the basic HBC, symmetrical HBC, Isolated HBC, and tapped inductor HBC, all of which are analyzed in details and design considerations are provided.In addition, the 3D DC-DC converter concept for high power application, inverter configuration and DC micro-grid based on HBC converters are developed.The proposed HBCs are applicable in many areas such HID lamp driver, X-ray system, ion pumps, front-end photovoltaic energy system, and energy storage systems.