EDN Magazine Issue 2011-01-20

11.9 MB·English

by  Reed Electronics Group

20 Prying Eyes: Schauer
TB10012 battery
JAN charger Pg 24
Issue 2/2011 Changing times,
www.edn.com steady goals Pg 9
Remote photo
sensing Pg 22
Design Ideas Pg 47
Go ahead.
VOICE OF THE ENGINEER
Make my day! Pg 54
BATTERY-STACK- HARDWARE-BASED
VIRTUALIZATION
EASES DESIGN
MONITOR ICs
WITH MULTICORE
PROCESSORS
SCRUTINIZE Page 28
MANAGING
THE CELLS
SIGNAL INTEGRITY
IN TOMORROW’S
Page 36
HIGH-SPEED
FLASH-MEMORY-
SYSTEM
DESIGNS
Page 44
ED110120_001 1 1/10/11 2:08:34 PM
ED110120_002 2 1/10/11 2:08:48 PM
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EXL Core, and the EXL Core logo design are trademarks of Cirrus Logic, Inc. EDN06242010
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1.20.11
contents
Hardware-based Managing signal
virtualization eases integrity in tomorrow’s
design with multicore high-speed
Battery-stack-monitor
processors flash-memory-system
ICs scrutinize the cells
designs
28 Offloading queue and traf-
36 Electric-vehicle and fic management to hard-
44 Next-generation flash-
data-center batteries ware reduces design complexity,
memory technology will
need precise measure- improves application efficiency,
tout data-transfer rates as much
ments using robust chips. and maximizes performance.
as 10 times faster than currently
by Paul Rako, Technical Editor by Satish Sathe, AppliedMicro
available. However, increasing
distortions in the data-carrying
pulse digital signals can cause data-
transfer failures, complicating
Dilbert 14
the management of signal integ-
rity. Proper design strategies can
help you deliver reliable, high-
12 Development kit tackles 16 400-Gbyte MLC solid-state performance products.
multi-dc/dc control strings drives target enterprises by Perry Keller,
for white and RGB LEDs 18 Microcontrollers operate Agilent Technologies
14 Ambarella augments as fast as 120 MHz
image-processing foundation
18 Gartner predicts Indian PC
with increasing integration
shipments to grow 25% in 2011
14 Chinese company increases
20 Voices: Samsung Electro-
OLED lifetime
Mechanics’ Jong-Woo Park: tar-
16 EDA tool accelerates geting smart-grid, electric-vehicle,
place and route for SOCs and biotechnology applications
COVER: DASHBOARD & LANDSCAPE: NARVIKK/ISTOCKPHOTO.COM;
BATTERY ICON: VADYM TYNENKO/ISTOCKPHOTO.COM
D E S I G NI D E A S
220L 1μH 1ND58119 47 Oscillator has voltage-controlled duty cycle
1k 1R02k 76215IC551 8435 IRFQZ144 47C μ3F+ 48 Generate noisy sine waves with a sound card
48 Decode a quadrature encoder in software
22C0 2 pF BCQ5247
51 Power an LED driver using off-the-shelf components
JANUARY 20, 2011 | EDN 5
ED110120_005 5 1/10/11 2:24:36 PM
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ED110120_006 6 1/10/11 2:24:49 PM
contents1.20.11
Benchmark
MOSFETs
Same Package,
60% More Current
52 54
D E PA R T M E N T S & C O L U M N S
9 EDN.comment: Changing times, steady goals
22 B aker’s Best: Remote photo sensing
LLLLooooogggggiiiiiccccc LLLLLeeeevvveeelllll
24 P rying Eyes: The Schauer TB10012 battery charger
26 Mechatronics in Design: You can’t just say it’s reliable
52 Product Roundup: Optoelectronics/Displays, Discrete Semiconductors NuPmarbter B(VVD)SS R(4m.D5SV(cid:49)(gosn)) 4(.Qn5VcGg)s 2I(D5A@˚C) Package
54 Tales from the Cube: Go ahead. Make my day! IRLS3034-7PPBF 40 1.7 108 240* D2PAK-7
IRLB3034PBF 40 2.0 108 195* TO-220
IRLS3034PBF 40 2.0 108 195* D2PAK
online contents www.edn.com IRLS3036-7PPBF 60 2.2 91 240* D2PAK-7
IRLB3036PBF 60 2.8 91 195* TO-220
IRLS3036PBF 60 2.8 91 195* D2PAK
ONLINE ONLY
PRYING EYES IRLS4030-7PPBF 100 4.1 87 190 D2PAK-7
Check out these Web-exclusive articles: IRLB4030PBF 100 4.5 87 180 TO-220
In EDN’s Prying Eyes, we peer inside an end-
IRLS4030PBF 100 4.5 87 180 D2PAK
Critical false-path analysis user consumer gadget, a reference design,
* Package limited
through sensitization methods or any other interesting electronics-
Static and dynamic false-path determination enabled thing we can get a good Features
is essential for accurate application of false look at. Unlike your average bill-of-
paths in an SOC design. materials tear-down, Prying Eyes • Suited for industrial battery, power
➔www.edn.com/110120toca aims to illuminate the tough supply, high power DC motors, and
decisions the engineers responsible power tools
Ensuring form, fit, and function
for the design had to make.
for advanced interactive digital displays ➔www.edn.com/pryingeyes • Industrial grade and MSL1
The environment in which end-user equip-
• RoHS compliant
ment will be deployed has a critical influence
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The EDN.com News Center provides
electrical properties.
➔www.edn.com/110120tocb real-time breaking news and analysis on For more information call
the global electronics industry, including 1.800.981.8699 or visit
READERS’ CHOICE 2010 coverage of semiconductors, lawsuits, IC www.irf.com
Take a look at 20 of the most-clicked-on design, microprocessor units, consumer
articles and blog posts from across EDN.com electronics, analog, and business trends.
in 2010. ➔www.edn.com/110120tocd
➔www.edn.com/110120tocc
EDN® (ISSN#0012-7515) is published semimonthly, 24 times per year, by UBM Electronics, 11444 W. Olympic Blvd., Los Angeles, CA 90064-
1549; 310/445-4200; FAX [phone]. Periodicals postage paid at Los Angeles, CA, and at additional mailing offices. SUBSCRIPTIONS—
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part without written permission is prohibited. Volume 56, Number 2 (Printed in USA).
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EDN.COMMENT
BY RON WILSON, EDITORIAL DIRECTOR
World—rather than both that magazine
and EDN.
Internal changes have also occurred,
although these changes will more slow-
ly become evident. The editorial teams
of EDN, Test & Measurement World,
Design News, ESD/Embedded.com, EE
Changing times, steady goals Times Designlines, EELife, and EE Times
now all report to a senior vice presi-
dent for content—and an engineer—
Y
ou may have heard, if you follow such things, that
Karen Field. For those of you as con-
UBM (United Business Media) has purchased Canon cerned as we are that advertiser influ-
Communications, the publisher of EDN. UBM publishes ence should not intrude into editori-
EE Times and ESD magazine, among others. This acqui- al decisions, this change is a powerful
reassurance.
sition is part of continuing reorganization in business-to-
The new organization also involves
business publishing in response to a whole range of shifts
more expertise. We will continue to
worldwide. The acquisition set off all manner of rumors in the advertising
honor the distinction between engi-
and public-relations worlds: UBM would close EDN, would fold it into neer-written content and content from
the EE Times and Designline Web sites, or would redesign it to become the technically skilled nonengineers. We
industry’s first engineer-to-engineer animated comic book. now have more voices from more tech-
nical specializations to call upon, how-
Well, sorry; as usual, the truth is that clamor for your attention. It will ever. We believe you will soon be read-
more prosaic. continue to be, as its tag line says, the ing the benefits.
To begin with, EDN isn’t going away. voice of the engineer. We intend to keep another impor-
It is still here, and UBM is still commit- So, what will change? For one thing, tant distinction, as well. EDN has al-
ted to both the magazine and its net- I am back at EDN after a brief absence. ways been about what we might call
work of Web communities. UBM still Rick Nelson, after somehow simultane- foundational technologies: analog de-
believes that working designers deserve ously managing to guide two major in- sign; transforming, distributing, and de-
technical articles by and for en- dustry journals through some livering power; digital design; the use of
gineers, standing apart from difficult transitions, has re- processors and FPGAs; and the process
the streams of news and ven- turned to being editor-in-chief of creating ICs. The material we pub-
dor-produced marketing pieces of just Test & Measurement lish comprises either staff-written or
solicited and staff-edited, nonpromo-
tional contributed articles. Some of the
Designlines have a more application-ori-
ented flavor, focusing on how vendors
are approaching design problems in
specific application areas. Especially in
the print magazine, however, EDN will
continue to focus on engineers writing
about the foundations.
That’s it in the proverbial nutshell.
We will continue to bring you the best
engineering articles from the most au-
thoritative sources, be they working
engineers, analysts, or our own staff.
M
O And we invite your feedback: This is
O.C
OT a closed-loop system, and we need that
OCKPH error signal.
O/IST Thank you for being our readers, and
WANT welcome to an exciting 2011.EDN
OGY IKH Contact me at [email protected].
Y
JJAANNUUAARRYY 2200,, 22001111 || EEDDNN 99
ED110120_009 9 1/10/11 2:39:47 PM
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