PFC high current toroidal choke 10A - 63A


Datasheet as PDF
Toroidal chokes for application at high frequencies up to 150 kHz

 

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Fields of application


In primary and secondary clocked switch mode power supplies, not controlled and unregulated power supplies with transformers, electronic ballast for fluorescent lamps, U-converters, line-commutated converters (also classic I-converters), phase angle control dimmers and many more.


Description


PFC-chokes are one or two winding chokes with toroidal cores made of pressed soft magnetic powder material. The following materials are often used:
- MPP (79%-81% Ni, 17 % Fe, 2%-4% Mo)
- High Flux (50% Fe, 50% Ni)
- Cool My, Sendust (FeSi9,6 Al5,4)
These cores are usable over a wide range of permeability and have a smaller Lo/Ln factor at lower permeabilites than at higher permeabilities. PFC toroidal chokes are storage chokes for the application in active power factor correction circuits. Lamination chokes e.g. EI types are used in passive PFC circuits in contrary. This enables power factors of devicesor systems with a cos φ 1. The chokes are conform to EN 61000-3-2. They are suitable for high frequencies up to 150 kHz. The toroidal core is the ideal geometric shape for the magnetic flux, this results in a low magnetic stray field and low losses. The winding is constructed for low voltages and is wound with low stray field. The dimensions are determined by the energy E = 0,5 L I².


Drawings and tables


Potted, lying version
potted toroidal choke, lyingpotted toroidal choke, lying

 

open, upright version                                            open, lying version     

toroidal choke

Type

Current
[A]

No-load inductance
[µH]

Rated inductance
[µH]

Energy
[mWs]

DC-resistance
mOhm

Copper-
weight
[g]

Total
weight
[g]

DR...4

10

2300

1000

50

120

245

705

DR...4

16

1000

425

55

46

300

770

DR...4

20

172

160

32

70

160

220

DR...4

20

240

160

32

35

350

825

DR...4

25

115

85

26

16

270

730

DR...4

31,5

93

63

31

10

310

775

DR...4

40

12,6

12,4

9,9

8

70

120

DR...4

40

13,5

13

10,4

8

75

125

DR...4

40

36

33

26

15

140

200

DR...4

40

45

33

26

9

400

885

DR...4

50

18

13

16

4

430

915

DR...4

63

8,5

6,3

12

3,5

460

960

Technical changes and optimisation reserved. All details are guide values, variations are possible.

12/2015


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