Rogowksi Coil Current Sensor
The Rogowski coil is well suitable for sensing fast changing signals currents. It provides high bandwidth and galvanic isolation for power electronics applications. This chapter introduces Rogowski coil based current sensors for on-chip and off-chip sensi
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Integrated Wide-Bandwidth Current Sensing
Integrated Wide-Bandwidth Current Sensing
Tobias Funk • Bernhard Wicht
Integrated Wide-Bandwidth Current Sensing
Tobias Funk Dornstetten, Germany
Bernhard Wicht Gehrden, Germany
ISBN 978-3-030-53249-9 ISBN 978-3-030-53250-5 (eBook) https://doi.org/10.1007/978-3-030-53250-5 © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2020 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors, and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, expressed or implied, with respect to the material contained herein or for any errors or omissions that may have been made. The publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. This Springer imprint is published by the registered company Springer Nature Switzerland AG The registered company address is: Gewerbestrasse 11, 6330 Cham, Switzerland
Preface
High-performance current measurement in a compact and cost-effective design is highly relevant for monitoring, controlling, and optimizing the flow of energy in growth areas such as industrial electronics, renewable energies, smart grids, electromobility, and the Internet of Things. Highly accurate and fast current sensing circuits are a key element specifically for improving energy efficiency, power density, and construction volume. This book addresses the development and implementation of current sensors on system and circuit level that can be integrated on a microchip with a high measurement bandwidth. As a key approach, this book explores the combination of an optimized fully integrated Rogowski coil and a Hall sensor to enable current sensing from DC to the multi-MHz region. The combination of these two sensor principles, which measure the current by means of the magnetic field and which do not require any postprocessing on the technology side, makes it possible to implement a cost-effective and low-loss hybrid current sensor IC. A planar Rogowski coil is intended to be placed besides a power line to measure on-chip signal currents. For off-chip current sensing, a helix-shaped coil offers mounting th
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