AMORPHOUS CHOKE COILS
AMORPHOUS CHOKE COILS
?Characteristics comparison of magnetic materials
?Location of amorphous alloy in soft magnetic materials
High
Fe-based
Nano-crystalline
permeability Power ferrite Permalloy Silicon steel
ferrite
amorphous alloy
Saturation magnetic
flux density Bs [mT]
2000
700
325
750
1550
1250
500
12000
85
500
2300
52
700
10000
97
Magnetic permeability
M (10[kHz])
5000
40
75000
20
Core loss at high frequency
P
Fe [mW/g]
Curie point
Tc [C]
400
550
570
120
230
350
Crystallization temperature
Tx [C]
Output smoothing Common-mode
Broad-band
High frequency
transformer
Sensor
Current
Transformer for
commercial
frequency
Applications
noise supression frequency
transformer
Common-mode
noize supression
Pulse transformer transformer
Output smoothing
Common-mode
noise supression
Low frequency choke
High frequency
transformer
?
Frequency dependence of the core loss of amorphous
Comparison between ferrite choke and dust choke
Bm=100[mT], Magnetic flux: Sine wave
1000
?D.C. bias of normal mode choke coil
@
Dust choke
TM Series
100
Fe-Si-Al
Non-gap type
CM Series
Gap type
10
Ferrite choke
Mn-Zn, For power choke
1
1
10000
10
100
1000
Frequency f [kHz]
?Storage power vs. Coil volume (Energy capacity)
?D.C. bias of amorphous choke coil
@
Temperature dependence : Core temperature 25, 100c
1000
LNC462725G
LNC462715G
Amorphous
LNC372310G
LNC251510G
LNC221310G
100
10
LNC191305G
LNC211205G
EI60
EI50
LNC150905G
LNC130805G
EI40
EI30
1
Ferrite
EI25
EI22
0.1
1
10
100
1000
Coil volume Vcoil [cm3]
(1/1)
CAT. No. E1008E
CHEMI-CON [ UNITED CHEMI-CON, INC. ]
