B82801A 데이터 시트보기 (PDF) - EPCOS AG

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B82801A

SMT current sense transformers

EPCOS AG 

SMT current sense transformers

B82801A

EE 4.2

Bmax

=

V-----s--e--n---s--e----m----a--x----˜---G---m----a--x-

ns ˜ Ae ˜ fosc

With:

Bmax

Maximum magnetic flux density in the ferrite core of the current sense transformer

Vsense,max Maximum output voltage of the measurement signal

Gmax

Maximum duty cycle

ns

Number of turns of the secondary winding of the current sense transformer

Ae

Effective magnetic area of the ferrite core

fosc

Operating frequency of the switching operator IC

Typical value for Ae: 1.44 x 10-6 m2

Typical Bmax: 200 mT

RT

=

V-----s--e--n---s--e----m----a--x----˜---n---s

Iprim max

With:

RT

Resistance of burden resistor

Vsense,max Maximum output voltage of the measurement signal

ns

Number of turns on the secondary side of the CT

Iprim,max Maximum primary current (peak current)

Characteristics and ordering codes

Lmin

PH

33

74

132

205

295

400

820

1280

1840

Turns ratio

Np : Ns

1 : 20

DC resistance

Rmax (m:)

primary secondary

2.5

320

Voltage- Recomm.

time product RT

V ˜ μs

5.76

20

Ordering code

B82801A0333A020

1 : 30

2.5

800

8.6

30

B82801A0743A030

1 : 40

2.5

1300

11.5

40

B82801A0134A040

1 : 50

2.5

2200

14.4

50

B82801A0214A050

1 : 60

2.5

3600

17.3

60

B82801A0304A060

1 : 70

2.5

4600

20.0

70

B82801A0404A070

1 : 100

2.5

8700

28.8

100

B82801A0824A100

1 : 125

2.5

13000

36.0

125

B82801A0135A125

1 : 150

2.5

21000

43.2

150

B82801A0185A150

Please read Cautions and warnings and

Important notes at the end of this document.

5 12/12

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