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EDN, May 26, 2011

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contents5.26.11 Simpler Power Conversion 60 62 DEPARTMENTS & COLUMNS 9 EDN.comment: Nebulosity and The Cloud 22 Baker's Best: Beyond the data sheet with IBIS 24 Prying Eyes: The HTC Surround: achieving differentiation through enhanced sound 28 Mechatronics in Design: So, you want to build an H-bot? 60 Product Roundup: Sensors/Transducers 62 Tales from the Cube: The Ex-scope-ist online contents ONLINE ONLY Check out these Web-exclusive articles: Realistic test approaches provide accurate LED-lifetime numbers A laboratory testing methodology addresses the long-term durability and wear-out issues resulting from exposure of LED products to various outdoor end-use environments. ➔www.edn.com/110526toca FPGA-to-ASIC conversion: Is automatic an option? KaiSemi brings a long heritage to a hard computing problem. ➔www.edn.com/110526tocb Embedded WLAN on track for 35% growth in 2011 Shipments of electronic products with em- bedded WLAN (wireless local-area network- ing) will surpass 1 billion units for the first time in 2011, with growth continuing through 2015, according to IHS iSuppli. ➔www.edn.com/110526tocc www.edn.com ENGINEERS' TRUE STORIES In EDN's Tales from the Cube, engineers relate their most vexing design chal- lenges—and how they conquered them. Here are some examples of how your peers solved real-world problems: Floats like a butterfly, stings like a bee ➔www.edn.com/110526tocd Band together ➔www.edn.com/110526toce Acid test ➔www.edn.com/110526tocf Cheaper to keep 'er ➔www.edn.com/110526tocg Read more in the Tales archive at www.edn.com/tales. EDN® (ISSN# 0012-7515) is published semimonthly by UBM Electronics, 600 Community Drive, Manhasset, NY 11030-3825. Periodicals postage paid at Manhasset, NY, and at additional mailing offices. SUBSCRIPTIONS—Free to qualified subscribers as defined on the subscrip- tion card. Rates for nonqualified subscriptions, including all issues: US, $150 one year; $250 two years; $300 three years. Except for special issues where price changes are indicated, single copies are available for $10 US and $15 foreign. For telephone inquiries regarding subscrip- tions, call 763-746-2792. E-mail: edn@omeda.com. CHANGE OF ADDRESS—Notices should be sent promptly to PO Box 47461, Plymouth, MN 55447. Please provide old mailing label as well as new address. Allow two months for change. NOTICE—Every precaution is taken to ensure accuracy of content; however, the publishers cannot accept responsibility for the correctness of the information supplied or advertised or for any opinion expressed herein. POSTMASTER—Send address changes to EDN, PO Box 47461, Plymouth, MN 55447. CANADA POST: Publications Mail Agreement 40612608. Return undeliverable Canadian addresses to BleuChip International, PO Box 25542, London, ON N6C 6B2. Copyright 2011 by United Business Media. All rights reserved. Reproduction in whole or part without written permission is prohibited. Volume 56, Number 10 (Printed in USA). For more information call 1.800.981.8699 or visit www.irf.com Primary Side Resonant Half Bridge Control IC Part Number Programmable Dead Time (nS) IRS27951S IRS27952S 200-2000 200-2000 600 600 Secondary Side SmartRectifier™ Part Number Package VOFFSET (V) IRS11682 SO-8 200 2 3 Control IC Description Dual Synchronous Rectifi er Controller VOFFSET (V) OCP Threshold (V) IR chipset for Half Bridge Resonant AC-DC converter THE POWER MANAGEMENT LEADER

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