TDK EE320x250x20 User Manual
Large Size Ferrite Cores for High Power
Summary
Issue date: November 2010
• All specifications are subject to change without notice.
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific
bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
(1/7)
Large Size Ferrite Cores for High Power
Summary
Nowadays, more and more high-frequency circuits are being used in industrial equipment as well as consumer equipment. With the use of
higher frequencies, silicon steel sheets have become unsuitable for magnetic material used in transformers. Ferrite, its substitute, delivers
reduced core loss at high frequencies and is the optimum material for high-power requirements.
To meet these various demands, we at TDK have employed our ferrite development technologies accumulated over the years and
advanced production technologies to offer large, high-quality cores for high-frequency, high-power power supplies.
In the following information, introduce ferrite cores that used PE22, PC40 and PE90 materials having superior magnetic characteristics.
APPLICATIONS
High frequency inductive heater EE320x250x20
Transformer
Reactor choke
Uninterruptible Power Supply System(UPS)
CATV’s power supply
Photovoltaic power generation
Power supply of communications station
Electrical vehicle
Automated warehouse, conveyor machine
Current sensor
General purpose inverter • Air conditioner
• Fun
• Pump
• Printing press
• Packing machine
• Machines for food industry
• Drier
• Compressor of freezer
• Textile machine
• Woodworking machine
• Medical machine
Trains
EC70,90,120
PQ78,107
UU79x129x31
UU79x129x31
• All specifications are subject to change without notice.
003-02 / 20101108 / e16_1.fm
FEATURES
• Large size ferrite cores developed for reactors and transformers used in high power units.
• Please contact us for machinability of non-standard special forms.
MATERIAL CHARACTERISTICS (Typical)
Material PE22 PC40 PE90
Initial permeability µi [23°C] 1800 2300 2200
Curie temperature Tc °C >200 >200 >250
Saturation magnetic flux density
H=1194A/m
Remanent flux density Br [23°C] mT 140 125 170
Coercive force Hc [23°C]A/m161513
Core loss
25kHz, 200mT
100kHz, 200mT 520 420 400
Electrical resistivity ρΩ • m 3.0 6.5 6.0
Approximate density dapp kg/m
Thermal expansion coefficient α 1/K 12×10
Thermal conductivity κ W/mK555
Specific heat C
Bending strength δ
Young’s modulus E N/m
Magnetostriction λs –0.6×10
• 1(mT)=10(G),1(A/m)=0.012566(Oe)
[23°C]
Bs
[100°C]
mT
[90°C]
Pcv
[100°C]
p J/kg • K 600 600 600
b3 N/m
kW/m
510
410
79 64 60
3
80 70 68
3
2
2
4.8×10
9×10
1.2×10
3
–6
7
11
–6
500
380
4.8×10
12×10
7
9×10
1.2×10
–0.6×10
3
–6
11
–6
530
430
4.9×10
12×10
7
9×10
1.2×10
–0.6×10
3
–6
11
–6
(2/7)
CORE LOSS vs. TEMPERATURE CHARACTERISTICS
200
150
)
3
100
kW/m
(
cv
P
25kHz-200mT
PE22
PC40
PE90
50
0
Temperature(˚C
)
120100806040200
900
700
)
3
kW/m
(
cv
P
500
300
PE22
PC40
PE90
Temperature(˚C
100kHz-200mT
)
120100806040200
• All specifications are subject to change without notice.
003-02 / 20101108 / e16_1.fm
Loading...