B82801B305A125 Datasheet, PDF (5/9 Pages) EPCOS – SMT current sense transformers

SMT current sense transformers
B82801B
EE 5.0
B_max
=
V_{-----s--e--n---s--e----m----a--x----}˜_---G_{---m----a--x-}
n_s ˜ A_e ˜ f_osc
With:
B_max
Maximum magnetic flux density in the ferrite core of the current sense transformer
V_sense,max Maximum output voltage of the measurement signal
G_max
Maximum duty cycle
n_s
Number of turns of the secondary winding of the current sense transformer
A_e
Effective magnetic area of the ferrite core
f_osc
Operating frequency of the switching operator IC
Typical value for A_e: 2.5 x 10^-6 m²
Typical B_max: 200 mT
R_T
=
V_{-----s--e--n---s--e----m----a--x----}˜_---n_---s
I_{prim max}
With:
R_T
Resistance of burden resistor
V_sense,max Maximum output voltage of the measurement signal
n_s
Number of turns on the secondary side of the CT
I_prim,max Maximum primary current (peak current)
Characteristics and ordering codes
L_min
PH
80
180
320
500
720
980
2000
3000
8000
Turns ratio
N_p : N_s
DC resistance
R_max (m:)
primary secondary
Voltage- Recomm.
time product R_T
V ˜ μs
:
Ordering code
1 : 20
0.6
400
10.0
20
B82801B0803A020
1 : 30
0.6
870
15.0
30
B82801B0184A030
1 : 40
0.6
1140
20.0
40
B82801B0324A040
1 : 50
0.6
1500
25.0
50
B82801B0504A050
1 : 60
0.6
1980
30.0
60
B82801B0724A060
1 : 70
0.6
3000
35.0
70
B82801B0984A070
1 : 100
0.6
5500
50.0
100
B82801B0205A100
1 : 125
0.6
6500
62.5
125
B82801B0305A125
1 : 200
0.6
33240
100.0
200
B82801B0925A200
Please read Cautions and warnings and
Important notes at the end of this document.
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