PC44EPC25B-Z datasheet(21/45 Pages) TDK

21 / 45 page

(20/44)

002-03 / 20100305 / e143.fm

• All specifications are subject to change without notice.

PQ Series PQ35/35 Cores

∗ Coil: ø0.4 2UEW 100Ts

NI limit vs. AL-value for

AL-value vs. Air gap length for

Temperature rise vs. Total loss for

PC44PQ35/35 gapped core (Typical)

PC44PQ35/35 core (Typical)

PQ35/35 core (Typical)

(Ambient temperature: 25°C)

PARAMETER

Core factor

mm–1 0.448

Effective magnetic path length

emm

87.9

Effective cross-sectional area

mm2

196

Effective core volume

mm3

17300

Cross-sectional center pole area

mm2

162

Minimum cross-sectional center pole area A

cp min. mm2

156

Cross-sectional winding area of core

Acw

mm2

220.6

Weight (approx.)

g73

26.0

±0.5

34.75

±0.25

25.0

±0.3

Dimensions in mm

Part No.

AL-value (nH/N2)∗

Core loss (W) max.

Calculated output power

(forward converter mode)

100kHz, 200mT

PC44PQ35/35Z-12

4860±25% (1kHz, 0.5mA)

5.27(100°C)

452W (100kHz)

PC90PQ35/35Z-12

4700±25% (1kHz, 0.5mA)

6.6(100°C)

475W

PC95PQ35/35Z-12

7320±25% (1kHz, 0.5mA)

7.12/5.98/7.12(25°C/80°C/120°C)

500W

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)

102

103

AL-value(nH/N2)

103

104

102

101

Temperature: 100˚C

40%

20%

NI20%=84995×AL–1.0782

NI40%=67575×AL–1.0273

104

103

102

101

Air gap length(mm)

0.01

0.10

Center pole gap

Temperature: 25˚C

AL=247.1×lg –0.7794

100

Total loss Pm(W)

Measuring point

Coil

Core

Note: NI limit shows the point where the exciting

current is 20% and 40% away from its

extended linear part.

Measuring conditions • Coil: ø0.4 2UEW 100Ts

• Frequency: 1kHz

• Level: 0.5mA

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