Magnetics Business & Technology - March/April 2022 - 30
TECH TIPS
Soft Saturation Important for Inductors in SMPS, Explains Abracon
The best inductor for today's dynamic switch-mode power
systems (SMPS) is one that has soft saturation, says passive
component manufacturer Abracon. Designed to maximize
power conservation, the saturation strategy favors using inductors
made of composite material rather than materials such as
hard ferrite which exhibit hard saturation.
The most common design method for saving power is by gating
power and clocking to the subsystems that can be turned
off when non-operational. SMPS are a common method but
selecting a low loss inductor with soft saturation and a low
ESR load capacitor are critical to designing a low ripple, stable
power supply, explains Abracon in a recent presentation titled,
" The Importance of inductor Soft Saturation. "
The company recommends power inductors that exhibit " soft "
saturation as illustrated by the blue line in the accompanying
figure. Inductors will lose their effective inductance as the current
increases. The inductors with " hard " saturation shown as
the ferrite inductor or red line, lose their effective inductance
very quickly.
According to Abracon, as the effective inductance reduces,
less energy is stored in the inductor's magnetic field which has
an adverse effect by increasing the output ripple voltage. The
limit of hard saturation decreases the usable range of an inductor
like a shielded ferrite. However, the soft saturating inductors
made from composites have a much wider usable range
of current without posing a threat of saturation and excessive
output ripple voltage. As a result, soft saturation provides the
power supply designer with wider operating ranges, more
design flexibility and margin for the dynamic loads of today's
power sensitive systems.
The full explanation is available on the Abracon website.
Based in Spicewood, Texas near Austin, Abracon is a developer
of frequency control & timing devices, RF & antenna
products, power magnetics including ferrite beads and chips,
inductor and connectivity solutions.
For more info, see www.abracon.com.
30 Magnetics Business & Technology * March/April 2022
www.MagneticsMag.com
http://www.abracon.com
http://www.MagneticsMag.com
Magnetics Business & Technology - March/April 2022
Table of Contents for the Digital Edition of Magnetics Business & Technology - March/April 2022
Magnetics Business & Technology - March/April 2022
Editor’s Choice/ Features
The Big Screen: Special Effects with the Aid of Absolute Draw-Wire Encoders
Magelec to Supply PM Axial Flux Motor Systems for New e-Car Racing Circuit
GE Power Conversion Equips Navy Fleets with Electric Propulsion Systems
Research & Development
Product News
Industry News
Events Calendar/ Advertising Index
Soft Saturation Important for Inductors in SMPS, Explains Abracon
Tech Tips
Magnetics Business & Technology - March/April 2022 - Magnetics Business & Technology - March/April 2022
Magnetics Business & Technology - March/April 2022 - Cover2
Magnetics Business & Technology - March/April 2022 - 3
Magnetics Business & Technology - March/April 2022 - Editor’s Choice/ Features
Magnetics Business & Technology - March/April 2022 - 5
Magnetics Business & Technology - March/April 2022 - The Big Screen: Special Effects with the Aid of Absolute Draw-Wire Encoders
Magnetics Business & Technology - March/April 2022 - 7
Magnetics Business & Technology - March/April 2022 - 8
Magnetics Business & Technology - March/April 2022 - 9
Magnetics Business & Technology - March/April 2022 - Magelec to Supply PM Axial Flux Motor Systems for New e-Car Racing Circuit
Magnetics Business & Technology - March/April 2022 - 11
Magnetics Business & Technology - March/April 2022 - 12
Magnetics Business & Technology - March/April 2022 - 13
Magnetics Business & Technology - March/April 2022 - GE Power Conversion Equips Navy Fleets with Electric Propulsion Systems
Magnetics Business & Technology - March/April 2022 - 15
Magnetics Business & Technology - March/April 2022 - 16
Magnetics Business & Technology - March/April 2022 - 17
Magnetics Business & Technology - March/April 2022 - Research & Development
Magnetics Business & Technology - March/April 2022 - 19
Magnetics Business & Technology - March/April 2022 - Product News
Magnetics Business & Technology - March/April 2022 - 21
Magnetics Business & Technology - March/April 2022 - 22
Magnetics Business & Technology - March/April 2022 - 23
Magnetics Business & Technology - March/April 2022 - Industry News
Magnetics Business & Technology - March/April 2022 - 25
Magnetics Business & Technology - March/April 2022 - 26
Magnetics Business & Technology - March/April 2022 - 27
Magnetics Business & Technology - March/April 2022 - Events Calendar/ Advertising Index
Magnetics Business & Technology - March/April 2022 - 29
Magnetics Business & Technology - March/April 2022 - Tech Tips
Magnetics Business & Technology - March/April 2022 - Cover3
Magnetics Business & Technology - March/April 2022 - Cover4
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2024marchapril
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2024januaryfebruary
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2023novemberdecember
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2023septemberoctober
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2023julyaugust
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2023mayjune
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2023marchapril
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2023januaryfebruary
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2022novemberdecember
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2022septemberoctober
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2022julyaugust
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2022mayjune
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2022marchapril
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2022januaryfebruary
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021novemberdecember
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021septemberoctober
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021julyaugust
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021mayjune
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021marchapril
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021januaryfebruary
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020novemberdecember
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020septemberoctober
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020julyaugust
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020mayjune
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020marchapril
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020januaryfebruary
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019novemberdecember
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019septemberoctober
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019julyaug
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019mayjune
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019marchapril
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019janfeb
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2018winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2018summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2018spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2017winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2017summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2017spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2016winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2016summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2016spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2015winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2015summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2015spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2014winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2014summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2014spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2013winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2013fall
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2013summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2013spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2012winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2012fall
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2012summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2012spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2011winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2011fall
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2011summer
https://www.nxtbookmedia.com