C1495-A [COILCRAFT]

SMPS Transformer, 13W;


型号：	C1495-A
厂家：	Coilcraft lnc.
描述：	SMPS Transformer, 13W 变压器
文件：	总1页 (文件大小：61K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Document 445

For National Semiconductor

PoE Transformers LM5070 PoE Interface

These surface mount flyback transformers were devel-

opedspecificallyfortheNationalSemiconductorLM5070

Powered Devices Interface in 13 Watt Power over Eth-

ernet (PoE) applications.

They are designed to operate at 250 kHz with an input

voltage of 36 – 72 Volts. These industry-standard size

EP13 transformers feature 1500 Vrms isolation from the

primary and bias windings to the secondary.

Coilcraft can also custom design transformers with

voltage, inductance and DCR values to meet your spe-

cific requirements.

For free evaluation samples, contact Coilcraft or order

them on-line at www.coilcraft.com.

Inductance

at 0 A¹

±±0ꢀ (ꢁµ)

Inductance

at Ipk²

min (ꢁµ)

Leakage

DCR max (Ohms)³

pri bias sec

Part

number

inductance

Turns ratio⁵

pri : sec : bias

Ipk²

(A)

max (ꢁµ)⁴

Output

C1495-A

C1585-A

C1586-A

127

114.3

0.255 0.310 0.018

0.222 0.348 0.039

0.199 0.308 0.129

1.25

0.950

0.650

1 : 0.166 : 0.5

1 : 0.25 : 0.5

1 : 0.5 : 0.5

1.0

3.3 V, 4.0 A

5.0 V, 2.6 A

12 V, 1.08 A

1. Inductance measured at 250 kHz, 0.2 Vrms, 0 Adc.

2. Ipk is peak primary current drawn at minimum input voltage.

3. DCR for the secondary is per winding.

5. Turns ratio is with the secondary windings connected in parallel.

6. Operating temperature range 40°C to +85°C.

7. Electrical specifications at 25°C.

–

4. Leakage inductance measured between pins 3 and 4 with all other

pins shorted.

8, 7

Sec

10, 9

Dot above pin1

Pri

0.485

max

12,32

0.004/0,10

0.039

Bias

1,00

0.699

max

17,75

0.512

13,00

0.061

1,55

0.590

14,99

0.050

1,27

0.028

0,70

0.530

13,46

Recommended

Land Pattern

max

0.098

2,50

0.098

2,50

Tape and reel: 175/13″ reel 32 mm tape width

Specifications subject to change without notice. Document 445 Revised 11/24/04

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