Troubleshooting Switching Power Converters This page intentionally left blank Troubleshooting Switching Power Converters A Hands-on Guide By Sanjaya Maniktala AMSTERDAM ???BOSTON ???HEIDELBERG ???LONDON NEW YORK ???OXFORD ???PARIS ???SAN DIEGO SAN FRANCISCO ???SINGAPORE ???SYDNEY ???TOKYO Newnes is an imprint of Elsevier Newnes is an imprint of Elsevier 30 Corporate Drive, Suite 400, Burlington, MA 01803, USA Linacre House, Jordan Hill, Oxford OX2 8DP, UK Copyright ? 2008 by Elsevier Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Permissions may be sought directly from Elsevier’s Science & Technology Rights Department in Oxford, UK: phone: (?44) 1865 843830, fax: (?44) 1865 853333, E-mail: permissions@elsevier. You may also complete your request online via the Elsevier homepage (elsevier), by selecting “Support & Contact” then “Copyright and Permission” and then “Obtaining Permissions.” Recognizing the importance of preserving what has been written, Elsevier prints its books on acid-free paper whenever possible. Library of Congress Cataloging-in-Publication Data Maniktala, Sanjaya. Troubleshooting switching power converters : a hands-on guide / By Sanjaya Maniktala. p. cm. Includes bibliographical references and index. ISBN 978-0-7506-8421-7 (hardcover : alk. paper) 1. Electric