Magnetics Business & Technology - November/December 2023 - 23

PRODUCT NEWS
High-Frequency Litz Wire Inductor from Pulse
Pulse has launched its first high frequency inductor
series designed specifically for Quasi Resonant
Converters. PH9499.xxxCNL is a 0.95uH-
1.25uH/3.5Arms series of inductors optimized
for the 800kHz - 1.2MHz frequency of operation,
typical of this topology. Litz wire is used to limit
the ratio of AC to DC resistance to 1.25 at 1MHz,
so that the converter maximizes the benefit of its
low (22mOhms MAX) DC resistance.
PH9499.xxxCNL was primarily designed for
power modules converting directly from 48 V to
silicon core voltages. Through its compact size
(11.2×9.75×7.6mm MAX) and its 1.1mm standoff
design feature that allows components to be
mounted beneath the inductor, a power density
of over 240W/in3 can be achieved in the resultant
power module design. Additionally, an industry
leading 6% inductance tolerance is achieved
to maximize the benefits of the resonant topology.
This tight tolerance, which arises from the
selected number of winding turns, results in a
high saturation current (>18A) so a high overcurrent
can be supported for a short duration without
compromising performance.
Gerard Healy,
Product
Marketing,
Specialized
Power PBU,
Pulse Electronics
" Many
families of inductors claim
to be market leaders, due to their
ultra-low DCR specification, without
publishing any data on their
high frequency core and copper
losses. While solutions such as
molded inductors are very compact
in their construction as magnetic
material is pressed directly
around the winding coil, their
high frequency resistance can be
multiples of their DC resistance
and their iron powder material
becomes lossy at MHz frequency
of operation. The PH9499 series
addresses these limitations by
using a high frequency grade, low
core loss, ferrite material and a fine gauge litz
wire, especially selected to optimise the performance
of your module, allowing you to achieve
over 90% efficiency, " said Gerard Healy Product
Marketing, Specialized Power PBU, Pulse Electronics.
For
more info see www.pulseelectronics.com.
www.MagneticsMag.com
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Achieve near-perfect magnetic circuits
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converters &
inverters
We utilize the
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times, and offer
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and custom cores.
Contact us today to discuss which
magnetic materials and core designs
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maximum electrifi cation properties.
75+ YEARS
OF CUSTOMER
SERVICE
Phone: (856) 964-7842
Fax: (856) 365-8723
www.magneticmetals.com
© 2021 Magnetic Metals Corporation
November/December 2023 * Magnetics Business & Technology 23
http://www.magneticmetals.com http://www.pulseelectronics.com http://www.MagneticsMag.com
Magnetics Business & Technology - November/December 2023

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