In this article, we are going to discuss Planar cores & their types, Characteristics, Advantages, and Applications. And how they are an appropriate choice for your power applications.

2. Planar cores are the best alternative to conventional
ferrite cores when there is a need for a low-profile
magnetic device. Their shape is suitable for PCB
mounting and they have low losses and high saturation
levels. These cores are commonly integrated with Printed
Circuit Boards (PCBs) used in the power supply market.
In this blog, we’re going to discuss Planar cores & how
they are an appropriate choice for your power
applications. Let’s get started!

3. What is the purpose of using Planar Cores?
Planar cores are used to make inductive components
where windings are fabricated with the help of printed
circuit tracks or copper stampings. Then, they are
separated by insulating sheets or constructed using
multiple-layered circuit boards.

4. Their windings are influenced by advanced computer aided
manufacturing technologies.
They have superior thermal features because of a larger
surface-to-volume ratio as compared to other ferrite cores.
They have excellent modularity, so no additional components
are required.
They are available in a variety of shapes & sizes from 10mm to
25mm.
The operating temperature range is between -30°C to 105°C.
Characteristics

5. Low Losses over wide temperature range
Excellent Magnetic Performance
Good Heat Dissipation
Good Stability Across Load Conditions
Strong Mechanical Integrity
Superior Thermal Features
Low Profile Construction
No Bobbin
Advantages of Planar Cores

6. Major Types of Planar Cores
1. Planar (EI, EE) Cores
These cores are ideal for manufacturing gapped inductors where
fringing losses have to be taken into consideration. These cores
are a little more expensive than other cores but have no wasted
space.
2. EIH, EEH Cores
These cores are produced using optimum grade raw material &
advanced technology. They are also a little more expensive than
other conventional ferrite cores.

7. Power Components
AC/DC Converter
DC/DC Converter
Applications
Planar cores are primarily used for commercial electronics. Below are some of
their common applications.
-Power Transformers
-Mains Filter Chokes
-Stand Alone SMPS
-Battery Chargers (Mobile Phones & Computers)
-Power Converter Modules
-Telecommunications Network
-Mobile Phones (Mains power supply)

8. Designing of Planar Cores
The height of an individual component can be decreased by
sinking the ferrite core through a slot in the motherboard. This is
pressed until the windings are placed on the motherboard.
In another technique, hybrid mounting, a part of the windings are
placed on the motherboard while others are joined in a multi-
layered circuit board. The motherboard should have slots to
maintain space for the ferrite core.

9. Conclusion
Planar cores have become an important component to achieve
high efficiency and high power density converter amidst the
increasing frequencies. If you are looking for planar cores for your
power applications, try our products designed & produced by
skilled experts & technicians.

10. At Cosmo Ferrites, we can even help you select the best
products for your unique requirements. We manufacture
& supply planar ferrite cores in a wide range of sizes for
power converter solutions. We’re continuously innovating
& extending our range of cores to meet the growing
requirements of our customers. Contact us to discuss your
requirements.

11. Thank You
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