SOLUTION

Accumulated rich experience in the research and production of high-precision, high-density, 
and high reliability printed circuit boards

SOLUTION

Planar Transformer Process Solution

Advantages of planar transformers

High

Small size

High efficiency

Good parameter 
repeatability

Wide operating 
frequency range

Wide working 
temperature range

Good insulation

Low leakage 
sensation

Good heat 
conduction

Low EMI 
radiation

The plate conductors of a 
planar transformer are 
actually some planar 
conductors, resulting in a 
high current density

The use of small magnetic 
cores can correspondingly 
reduce the volume

Efficiency can reach 
98%~99%

Because the winding 
structure is fixed and easy 
to pre process, the 
parameters are stable

The frequency can range 
from 50kHz to 2MHz

Working temperature is 
-40 ℃ to 130 ℃

A planar transformer is 
composed of conductive 
circuits and insulation 
sheets

Approximately 0.2% of the 
primary inductance

Short hot channel distance 
and low temperature rise

Good magnetic core 
shielding can reduce 
radiation to a very low level

Process characteristics of planar transformers

Thick copper
from 2-6oz 

Linewidth (coil) 
consistency

Uniformity of 
thickness

Media thickness 
uniformity

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