Magnetics Business & Technology - Spring 2015 - (Page 24)
SOFTWARE & DESIGN
CST Releases CST EMC Studio
Computer Simulation Technology (CST) has released CST EMC
Studio, a product for electromagnetic compatibility (EMC) and
electromagnetic interference (EMI) analysis.
EMC is an important
consideration in product
design across a wide range
of industries. CST develops
solutions that help identify
potential compliance issues
before the actual prototype
is built, and to analyze products that fail compliance
testing. Engineers can study
effects such as radiated or
conducted emissions in consumer electronics devices, or susceptibility to electrostatic discharge, lightning strike and high-intensity
radiated fields (HIRF). With CST EMC Studio, CST directly addresses
the unique requirements of this market.
CST EMC Studio contains a toolkit of proven solver technology
for the study of EMC effects, with general purpose 3D modules
for time and frequency domain simulation alongside more specialized solvers. In particular, it includes the 3D transmission line matrix
(TLM) method solver, which implements technology that simplifies
numerical EMC analysis, such as compact models and octree meshing. The bidirectional cable/field simulation enables more realistic
modeling of noise propagation and radiation over cables. True transient EM/circuit helps analyze the effect of nonlinear circuitry on
Radiated and conducted emissions from PCBs can play a critical
role in EMC performance of devices. For analyzing printed electronics, the powerful import functionality and the EMC rule checker are
of interest. EDA import formats supported include those used in
Cadence Allegro, Mentor Graphics Xpedition, Zuken CR8000 and
ODB++ databases. The EMC rule checker allows the detection of
potential problems on PCBs that can be then analyzed in 3D by the
full wave solvers.
Smart Tool to Select Discontinuous Mode Flyback
Transformers Released to Public
For discontinuous mode, flyback, SMPS designs, a online tool has
been launched by Wurth Electronics Midcom, Inc. Entering as little
information as input voltage range, switching frequency, output
voltages and current, the Smart Transformer Selector, or STS, will
return a list of prequalified,
Taking the tedium out of
the task, the STS searches
Wurth Eletronics Midcom's
database of hundreds of
SMPS transformers designed
for discontinuous mode, flyback operation. The STS uses
power supply parameters
and searches the database
for parts that will not saturate, will provide the proper
output voltages, will not over
stress your switch, so on and
so forth. "Essentially the STS
Magnetics Business & Technology * Spring 2015
looks at each transformer one at a time and does a reverse design to
make sure that it will function properly under the operating conditions that you specify," said Dean Huumala, product marketing and
development manager for Wurth Electronics Micom, Inc.
The search results are returned in a table that lists many of the
typical transformer parameters, such as inductance, turns ratio and
saturation current along, with mechanical and safety parameters for
the parts. Full specifications of the part are available for immediate
download in pdf format right from the table. The STS finds all suitable transformers, even those that were not designed specifically
with the given application in mind.
While the STS is designed for a novice, it can also be used by
the experienced SMPS designer who knows just what they want.
An advanced search feature allows those who wish to specify the
inductance, saturation current and/or turns ratio themselves. The
other basic parameters still must be entered as the tool needs to
verify the design.
Specifying duty cycle, MOSFET and diode rating, as well as the
controller used, are all options that can be used by the advanced
user. The STS will take all of these requirements into account when
searching for a transformer. For all users, a limited list of controllers from the IC manufacturers is provided for selection. Specifying
the controller will automatically populate the duty cycle, MOSFET
parameters and the UVLO-LO and UVLO-HI parameters as they pertain to the controller. One can still override the auto settings if they
wish as in the case of an external switch being chosen rather than
using the one internal to the controller.
As an added benefit to customers, the STS lists all parts that are
available off the shelf. Customers eliminate a standard wait time of
up to eight weeks for transformers. There are no minimum order
quantities on the products listed in the Smart Transformer Selector.
Most of the parts found in the STS are stocked at Digikey or Mouser,
and all are stocked directly at Wurth Electronics Midcom, Inc.
Remcom Releases Projected Capacitive Touch
Capability in XFdtd Electrostatic Solver
Remcom has announced Projected Capacitive Touch Capability in
XFdtd 3D Electromagnetic Simulation Software. The capability will
be available in the next
version of the software,
currently scheduled for
an early 2015 release.
Capacitive Touch Capability
is critical for designing
electronics with Touchscreen Panel (TSP)
touchscreens for mobile devices and desktop computer monitors, touchpads, proximity sensors and more.
XFdtd's electrostatic solver will compute the matrix of selfand mutual-capacitance between any number of conductors
in a model, which may be of almost any arbitrary shape and
complexity. Users can generate Maxwell and SPICE Capacitance
Matrix results and view them via XFdtd's Results Browser. Using
XFdtd's Poseable Hands, many configurations of typical touchscreen usage can be evaluated.
Table of Contents for the Digital Edition of Magnetics Business & Technology - Spring 2015
First-Order-Reversal-Curve Analysis of Multi-Phase Ferrite Magnets
Magnetics Design Tool for Power Applications
Magnet Inspection Tool with High Magnetic and Mechanic Accuracy
Research & Development
Software & Design
Marketplace / Advertising Index
Spontaneous Thoughts: The Patent Challenge
Magnetics Business & Technology - Spring 2015