PC44EPC25B-Z datasheet(29/45 Pages) TDK

29 / 45 page

(28/44)

002-03 / 20100305 / e143.fm

• All specifications are subject to change without notice.

LP Series LP32/13 Cores

∗ Coil: ø0.35 2UEW 100Ts

NI limit vs. AL-value for

AL-value vs. Air gap length for

Temperature rise vs. Total loss for

PC44LP32/13 gapped core (Typical)

PC44LP32/13core (Typical)

LP32/13 core (Typical)

(Ambient temperature: 25°C)

PARAMETER

Core factor

mm–1 0.909

Effective magnetic path length

emm

64.0

Effective cross-sectional area

mm2

70.3

Effective core volume

mm3

4500

Cross-sectional center pole area

mm2

58.1

Minimum cross-sectional center pole area A

cp min. mm2

55.4

Cross-sectional winding area of core

Acw

mm2

125.3

Weight (approx.)

g30

ø8.6

±0.2

13.5

±0.5

19.0

±0.3

24.1

±0.3

31.8

±0.2

25.0

±0.4

Dimensions in mm

Part No.

AL-value (nH/N2)

Core loss (W) at 100°C

Calculated output power

(forward converter mode)

100kHz, 200mT

PC44LP32/13Z-12

2630±25% (1kHz, 0.5mA)∗

3730 min. (100kHz, 200mT)

1.38 max.

164W (100kHz)

Note: The temperature rise is measured in the

room whose temperature and humidity are

fixed to 25°C and 45(%)RH. respectively.

(approx. 400

×300×300cm)

Measuring point

Core

Coil

102

103

AL-value(nH/N2)

103

104

102

101

Temperature: 100˚C

40%

20%

NI20%=16254×AL–0.9849

NI40%=15407×AL–0.9654

104

103

102

101

Air gap length(mm)

0.01

0.10

Center pole gap

Temperature: 25˚C

AL=106.84×lg –0.732

100

Total loss Pm(W)

Note: NI limit shows the point where the exciting

current is 20% and 40% away from its

extended linear part.

Measuring conditions • Coil: ø0.35 2UEW 100Ts

• Frequency: 1kHz

• Level: 0.5mA

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