Magnetics Business & Technology - July/August 2022 - 25

PRODUCT NEWS
notes Allegro, recent IHS forecasts predict that 81% of vehicles
will include some form of internal combustion engine through
2029, with full and mild hybrids being the most common. Engine
architectures are changing as part of the shift toward smaller
hybrid designs, and sensor accuracy and positioning flexibility
are becoming more important than ever before.
Giant magnetoresistance (GMR) is a newer technology that, over
the full range of airgap, can create a signal 50 times higher than
Hall-effect solutions. The extensive signal amplitude results in an
excellent signal-to-noise ratio and the GMR's higher sensitivity
provides higher accuracy and larger air gap/lower magnetic field
operation that many applications can benefit from.
" Our GMR design produces more than 50 times the
voltage of a Hall element when a magnetic field is
applied, which translates to a monumental boost in
signal-to-noise ratio. This allows the IC to sense at
significantly larger air gaps and output a periodic
signal with extremely low jitter, " says Allegro.
It uses a spin-valve architecture which involves a
reference layer with a fixed magnetic orientation
and a free layer that aligns with the applied external
magnetic field, enabling a relatively low resistance.
When the field applied is perpendicular to the
reference layer, the element's resistance becomes
higher. This change in resistance transduces the
applied magnetic field into the electrical domain for
the IC. At a physical level, the element's magnetic
orientation affects the spin state of the electrons,
which affects the rate of electron scattering and
consequently changes the element's resistance.
For more info, see www.allegromicro.com.
Curtiss-Wright Sense & Control
Actuators for Harsh Environments
Achieve near-perfect magnetic circuits
with our tape wound toroidal & cut
cores, specifi cally designed to:
* Outperform transformer laminations,
* Minimize electrical losses,
* Reduce component size & weight,
* Increase power density,
* Maximize performance characteristics
Our cores deliver the essential
magnetic properties and effi ciencies
required for:
* Transformers that power EV Charging
Stations,
Equipped with a magnetic absolute encoder for
closed loop feedback, the Exlar SA-R080 rotary
and SA-L080 linear actuator have been released
by Curtiss-Wright's Actuation Division as its newest
motor-actuators with integral controls. The SA-080
is the first frame size (80 mm) in the harsh environment
control and sense family of industrial electromechanical
actuators from the company.
www.MagneticsMag.com
* Transformers that control &
monitor AC induction & DC motor
performance,
* Power supplies that charge EV
battery packs,
* GFCI's used in
Electric Vehicles,
* Inductors,
converters &
inverters
We utilize the
most advanced
grades of
soft magnetic
materials, provide
short turnaround
times, and offer
both standard
and custom cores.
Contact us today to discuss which
magnetic materials and core designs
will give you EV components with
maximum electrifi cation properties.
75+ YEARS
OF CUSTOMER
SERVICE
Phone: (856) 964-7842
Fax: (856) 365-8723
www.magneticmetals.com
© 2021 Magnetic Metals Corporation
July/August 2022 * Magnetics Business & Technology 25
The actuators are suited for a variety of defense, industrial,
and commercial applications where distributed precision motion
control and the need to operate in harsh environments is
required such as in mobile equipment and other outdoor installations.
Electromechanical actuation offers better energy efficiency
and less environmental impacts and maintenance compared to
traditional fluid power alternatives, says the company.
Exlar is a business unit of Curtiss-Wright's Actuation Division,
based in Chanhassen, Minnesota.
For more info, see www.cw-actuation.com.
Optimize the electrifi cation properties
of your EV power electronics
& electric propulsion systems
http://www.cw-actuation.com http://www.allegromicro.com http://www.magneticmetals.com http://www.MagneticsMag.com
Magnetics Business & Technology - July/August 2022

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