EPN_2012-05.pdf

<]# May 2012

2012 EPN 40th anniversary

52 Executive Interview

Dave Bell, CEO Intersil, remembers

1972

Special reports

18 Home Networking

24 Power Management

Design Application

50 Hungary’s satellite project

Existing DECT handsets and

basestations can be used by

the COSIC ULC from Lantiq for

short-range wireless network

connectivity around the home.

Page 22

An adjustable current limit in

Linear Technology’s LTM8026

regulator is accurate to ±10%,

allowing designers to set the

maximum power to prevent

input voltage droop.

Page 28

NETWORKED

HOMES

Interoperability and

standards open doors

P AGE 18

One of the two devices for

dual battery control from Lapis

Semiconductor protects the

primary battery by preventing the

ﬂow of generated current from a

solar panel.

Page 44

Trade in and

save 15%

on selected Tektronix function

generators & oscilloscopes

Now is the perfect time to refresh your test equipment with the latest generation of

industry-leading Tektronix products designed to deliver impeccable performance

every time. For a limited time, you can trade-in any brand of working oscilloscope,

signal generator or frequency/counter timer for a new Tektronix model and save 15%.

Ofer ends 31 May 2012.

To ind out more visit

www.rs-components.com/tektronix-recycle

MAY CONTENTS

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[04] Editorial Comment

[06] On the Web

EDITORIAL

Editor-in-Chief

Caroline Hayes

chayes@reedbusiness.fr

Production Manager

Pasquale Spadari

pspadari@reedbusiness.fr

[40] Automotive Electronics

Production Controller

Charlotte Latroche

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[42] Test Corner

Distribution & Test Editor

Mick Elliott

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Electronic Product News

[44] Renewable Energy

Production Coordinator

Martine Goujon

mgoujon@reedbusiness.fr

Online Editorial Director

Pierre Bouhail

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front cover products

[46] Power Perspective

[49] RF&Wireless

[22] The COSIC ULC for DECT ULE (Lantiq)

DISPLAY ADVERTISING

Director of International

Sales

John Waddell

jwadds@btinternet.com

Page Layout & Design

Carolina Ronco

cronco@reedbusiness.fr

[55] Industrial Automation

[28] The LTM8026 regulators (Linear Technology)

[56] Distribution Spotlight

[44] The ML9077 and ML9078 for dual power

supplies (Lapis Semiconductor)

MANAGEMENT

Publisher

Martin Savery

msavery@reedbusiness.fr

Sales Support Manager

Sabrine Karmaoui

skarmaoui@reedbusiness.fr

reader offers

features

Sales Coordinator

Munkiu Sam

msam@reedbusiness.fr

Publishing Director

Antoine Duarte

[51] Win one of ive starter kits for the Gecko

microcontroller from Energy Micro

[18] Special report: Home Networking

CEO

Antoine Duarte

OPERATIONS

Circulation Manager

Sylvie Jalin

sjalin@reedbusiness.fr

[54] Texas Instrument offers two readers the

chance to win a multi-DC/DC colour LED kit

[24] Special report: Power Management

Cover image: onoky - Fotolia.com

design application

next editions

Ad Sizes and Digital File Requirements

available at:

www.epn-online.com/media

[50] Hungary’s satellite has sent back its irst

photographs from space so it is timely that this

month’s Design Application provides an insight

into the design and development of the MaSat-1

In next month’s issue, there will be an Industrial

Automation feature and a Switches & Relay

feature.

In the July issue, there will be an Optoelectronics

feature and a Medical feature.

Please send new product releases (a Word

document and high resolution image, where

available) for these features to Caroline Hayes:

chayes@reedbusiness.fr

a 100% subsidiary of Reed Elsevier France.

Production & Layout by Reed Business Information.

Digital publishing platform by Nxtbook Media, UK.

Registration of copyright: May 2012

ISSN number: 1763-7384

EPN 40th anniversary

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by errors or omissions in the material contained herein,

regardless of whether such errors result from negligence,

accident or any other cause whatsoever.

[52] Executive Interview

Dave Bell, CEO Intersil, remembers 1972

POSTMASTER

Send address changes to: subscription-epn@reedbusiness.fr

EPN ISSUE N° 05 – May 2012 3

EDITORIAL COMMENT

Garnering the power

of GaN

Recent analysis indicates that GaN, or Gallium Nitride, is an impressive emerging market. IMS Research

forecasts that the market will grow from almost zero last year to over $1billion in 2012. The three main

drivers for this growth, according to the analyst firm, will be its use in power supplies, PV inverters and

industrial motor drives. There is also a lot of interest in GaN for hybrid electric vehicles, where they can

save costs by sharing the car’s internal combustion engine.

By Caroline

Hayes,

Editor-in-Chief,

EPN

GaN power devices offer a similar performance to SiC (silicon carbide) ones, but has the potential for cost

savings, as they can be grown on a larger, less expensive silicon substrate. This should bring prices and

performance of GaN products close to those of silicon MOSFETs, IGBTs or rectifiers.

GaN is used in LEDs, when InGaN (Indium GaN) is grown on a GaN buffer on a sapphire or silicon

carbide substrate. The low sensitivity to ionising radiation and its high heat capacity creates possibilities

for its use in photovoltaic devices, where its microstructure allows the optical path to be lengthened to

trap more light.

The obvious question is why aren’t there more GaN devices in use? In 2010, International Rectifier

introduced a GaN Schottky diode, but only a handful of companies are subsequently developing GaN

products. One of the reasons for this slow up-take is that GaN can be unstable, with a risk of pressure

explosions and controllability problems during dry etching.

However, a partnership of a French and a Japanese company, and a Polish company have both released

news that is making GaN headlines and renewing interest in the process.

The first news is that a new source of GaN wafers is available as the French company Soitec and

Japanese company, Sumitomo Electric Industries will jointly produce 6inch wafers. Since 2010, the two

have jointly researched and developed 2inch, then 4inch wafers.

The second news is that a Polish company, Ammono, is to enter the GaN supply chain. It expects to

produce small wafers, about one sixth the diameter of standard silicon wafers, which is the dominant size

for making violet lasers. As well as increase in supply, the company expects to produce cost-effective GaN

crystals, which can equally be used in diodes and transistors to convert battery power for hybrid electric

cars.

GaN looks like it is teetering on the brink of great things. If the R&D continues to solve reliability and

safety issues to create a steady supply, it looks set to realise its potential.

May 2012 – EPN ISSUE N° 05

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© 2012 Maxim Integrated Products, Inc. All rights reserved. Innovation Delivered, Maxim, and the Maxim logo are trademarks or registered trademarks of Maxim Integrated Products, Inc., in the United States and other jurisdictions throughout the world.

All other company names may be trade names or trademarks of their respective owners.

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