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Dear Sir/Madam
Increasing miniaturisation and functionality of electronic
circuits and devices requires optimised power supply and
especially in battery powered devices optimised power
management. In this newsletter youŽll find some of the latest
trends in Power electronics. Enjoy!
Wolfgang Patelay
Technical Editor, EPN
Rectifier Module (Tyco Electronics)
The rectifier flow90CON 1 module consists of a 3-phase input
rectifier and a brake chopper together in a "flow90 1" housing.
The unit provides a modular input rectifier and brake-chopper
circuit for 15kW motor drives (35A at 1.6kV on 3 phases at 80°C
housing temperature and 35A at 1,200V brake chopper).
Click here
Synchronous Rectification (International Rectifier)
Designed for applications in DC/DC converters and
low-voltage motor drives and for AC/DC synchronous rectification in
servers, laptop adaptors, and desktop power supplies, the IRFB/S/SL3206,
3306, 3207Z and 3307Z families of MOSFETs offer excellent
synchronous rectification performance through improved RDS(on) in
AC-DC SMPS applications, and also improve power density by lowering
RDS(on) up to10% compared to the previous industry standards.
Click here
Modular Power Strips
APW Enclosure Solutions' standard power strips have
been upgraded to 13, 16 and 32A versions. These modular power
strips, which feature RS232 remote control and monitoring, local LED
or LCD display and optional network integration, are scaleable up to
30 outlets.
Click here
25V
Boost Converter
The MP3213 is a current mode, fixed frequency step-up
converter with an integrated 180mOhm, 3.5A power switch. Accepting
an input between 2.5 and 22V, the chip can operate across the full
functional range of single or multiple Li-Ion cells or up to 20V for
wall adapters.
Click here
Concentrated power
The challenge in industrial and automotive electronics is to
pack more and more power into equipment with diminishing
dimensions. Harald Vetter from
Epcos shows in his article that the Power Capacitor Chip (PCC),
can be a suitable approach to miniaturisation and integration.
Click here
Integrated Silicon Solutions for Brushless DC Motor-Drive Designs
The advantages of brushless DC (BLDC) motors over
their brushed DC and inductive counterparts are well-known today.
Georges Tchouangue and Wolf Jetschin from
Toshiba describing in an article how a combination of
efficiency, low electrical and acoustic noise and better torque
density in the BLCD motor is achieved.
Click here
Ceramic output capacitors enhance internally compensated
switchers
Integrating compensation components with a power-supply
controller and buck regulator's power switches can minimize
pc-board area, improve reliability, and eliminate assembly
errors by reducing the number of components and solder joints.
However, integration also limits a designer's range of choices
in the selection of output-filter components.
Robert Kollman
from Texas Instruments
shows in his Design Idea how to restore switching regulator
stability when you change output-capacitor compositions.
Click
here
Low-dropout regulator, SMPS cascade suppress ripple, maintain
efficiency
A
step-down SMPS (switched-mode power supply) efficiently converts
unregulated power to a regulated output voltage. However, unwanted
switching-induced ripple and input transients may appear on the
output. Scot
Lester from Texas Instruments highlights in his Design Idea that
two regulators work better than one in noise-sensitive applications.
Click here
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4| Market Research |
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Broadband Powerline Networking to be King in Residential
Networking
Broadband powerline networking, a wired technology that does not
require new cabling to be installed, is poised to emerge as a
winner in the residential networking interface race on a
worldwide basis, reports In-Stat. Powerline networking has
advantages over coax and twisted-pair cabling for in-home
deployment. This is especially true in regions with few existing
coax or phone jacks, such as in EMEA, Asia, and Pacific Rim
countries, the high-tech market research firm says.
Click here
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5| Book of the Month |
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Electromagnetic Compatibility in Power Systems, by Francesco
Lattarulo (Editor)
In addition to EMC textbooks providing a thorough background on
basic aspects, thus being well-tailored for students and those
which want to get in contact with this discipline is the object
of the present book which tries to rather discuss special
subjects, or throw out suggestions for reformulating
conventional approaches, than to appear as a reference text. A
common motivation encouraged the contributors to bringing
together a number of accounts of the research that they have
undertaken over the late years: willing to fill the important
need of covering EMC topics rather proper to transmission and
distribution of electric power than, more usually, to
Electronics and Telecommunication Systems.
Click
here
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EPN and EDN Europe are members of the Reed Electronics Group
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France
Tel- +33 (0) 1 46 29 23 60
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