Magnetics Business & Technology - July/August 2019 - 20

PRODUCT NEWS

Premo Introduces New Multiple Winding Design and Wireless Charging Antenna at APEC

Premo's 3DPower design applied to step-down transformer + series
inductor + parallel inductor
Grupo Premo, a manufacturer of electromagnetic components
for power electronics and RFID applications, displayed two of its
latest innovations using magnetic technology at the 2019 APEC
show held recently in Anaheim. One is a new platform for designing custom power magnetics components and the other a new
wireless charging antenna.

The benefits of such compact 3D design are reduced cost, a big increase
in power density and a lower volume space and overall weight in comparison
with existing single component technologies, he
said. Due to its geometry,
the main applications are
phase-shifted full-bridge
and resonant LLC DCDC
converters though it can
also be applied to various
customized designs. The
Pot-core solution from 3DPower
system was developed at
design
the company's innovation
center in Malaga and has
been tested and validated
by multiple customers in the automotive market.
Together with UPM University in Madrid, Premo presented a robust and lightweight high-power wireless charging antenna for
automotive charging applications. From initial math concepts two
years ago, a team of graduate students in the university's power

3DPower is the company's new platform for designing and developing custom power magnetics components. Based upon the
physical nature of electromagnetic fields which allow the co-existence of multiple magnetic fields in the same magnetic material core while the design maintains ninety degrees orthogonality
among the fields (Maxwell Laws), it is the first technology in the
market using this physical design concept, according to Claudio
Cabeza, chief innovation officer.
Wireless charging antenna

electronics department together with Premo engineers simulated
multiple configurations of the antenna with different weight reduction approaches and mechanical robustness reinforcements.

3DPower cross-section
"It allows the construction of multiple power windings among the
same ferrite high-permeability magnetic core, he explained. "The
challenges here were multiple and quite difficult -- keeping orthogonality close to ninety degrees to avoid field coupling, high volume
manufacturability feasibility for mass production and keeping cost
at a reasonable low level in comparison with single magnetics."

The simulations used polymer bonding magnetics technology
patented by Premo and flexible link-chain ferrite core concepts,
also Premo-patented. Once the concept was validated, manufacturing feasibility was addressed. Premo reached a manufacturing
concept that allows high volume production for the latest market
trends on wireless charging deployments and compliant with SAE
J2954 standards.
Based in Malaga, Spain, Premo specializes in the design and
manufacture of electromagnetic components including transformers and other inductive components, RFID antennas, EMC filters
and motion tracking devices. It employs about 800 people at seven design and manufacturing sites in Spain and other countries.
For more info see www.grupopremo.com.

20

Magnetics Business & Technology * July/August2019

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