PA1477NL 데이터 시트보기 (PDF) - Pulse Electronics

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PA1477NL

HIGH FREQUENCY WIRE WOUND TRANSFORMERS

Pulse Electronics 

HIGH FREQUENCY WIRE WOUND

TRANSFORMERS

EFD20 Platforms - SMT

Notes

1. The temperature of the component (ambient plus temperature rise) must 5. Optional Tape & Reel packaging can be ordered by adding a "T" suffix to

be within the stated operating temperature range.

the part number (i.e. PA0273NL becomes PA0273NLT). Pulse complies

2. The above transformers and inductors have been tested and approved

by Pulse's power IC partners and are sited in the appropriate datasheet

or evaluation board documentation at these companies. To determine

which IC and IC partners are matched with the above Pulse part num-

bers please consult the IC Cross Reference on the Pulse website.

3. For flyback topology applications, it is necessary to ensure that the trans-

Y former will not saturate in the application. The peak flux density (Bpk)

should remain below 2700Gauss. To calculate the peak flux density use

the following formula:

R Bpk (Gauss) = K1_Factor * Ipk(A)

4. In high volt-µsec applications, it is important to calculate the core loss of

the transformer. Approximate transformer core loss can be calculated as:

A CoreLoss (W) = 1.32E-13 * (Freq_kHz)1.63 * (ΔB_Gauss)2.63

where ΔB can be calculated as:

For Flyback Topology: ΔB = K1_Factor * Δ(A)

MechanicaIl N For Forward Topology: ΔB = K1_Factor * Volt-µsec

with industry standard tape and reel specification EIA481. The tape and

reel for this product has a width (W=44mm), pitch (Po=32mm) and depth

(Ko=11.78mm).

6. The "NL" suffix indicates an RoHS-compliant part number. Non-NL suf-

fixed parts are not necessarily RoHS compliant, but are electrically and

mechanically equivalent to NL versions. If a part number does not have

the "NL" suffix, but an RoHS compliant version is required, please con-

tact Pulse for availability.

IM 2.816,804MAX

12

12

7

ELPart Number

Date Code

Country of Origin

1.150

29,21

MAX

.930

23,62

1

PR12X

.028

0,71

1

6

12X

.060

1,52

.118

7

1.190

30,23

6

.118

3,00

.590

3,00

.590

14,99

14,99

12-PIN SUGGESTED PAD LAYOUT

SMT

1.415,403MAX

.010 ± .002

0,25 ± 0,05

.006 /0,15

12 SURFACES

12X

.080

2,03

For More Information:

Pulse Worldwide

Headquarters

12220 World Trade Dr.

San Diego, CA 92128

U.S.A.

www.pulseeng.com

TEL: 858 674 8100

FAX: 858 674 8262

Pulse European

Headquarters

Einsteinstrasse 1

D-71083 Herrenberg

Germany

TEL: 49 7032 7806 0

FAX: 49 7032 7806 12

Pulse China

Headquarters

B402, Shenzhen Academy of

Aerospace Technology Bldg.

10th Kejinan Rd.

High-Tech Zone

Nanshan District

Shenzen, PR China 518057

TEL: 86 755 33966678

FAX: 86 755 33966700

Pulse North China

Room 1503

XinYin Building

No. 888 YiShan Rd.

Shanghai 200233

China

TEL: 86 21 32181071

FAX: 86 21 32181396

Pulse South Asia

150 Kampong Ampat

#07-01/02

KA Centre

Singapore 368324

TEL: 65 6287 8998

FAX: 65 6280 0080

Pulse North Asia

No. 26

Kao Ching Rd.

Yang Mei Chen

Taoyuan Hsien

Taiwan, R. O. C.

32667

TEL: 886 3 4643715

FAX: 886 3 4641911

This is a “Preliminary” product data sheet. Products mentioned on this data sheet are in development and in the process of being qualified. These products are not fully

released nor are they in production. Features, specifications and performance of products offered are subject to change without notice. Other brand and product names

mentioned herein may be products and/or registered trademarks of their respective owners. For current information on this product, please contact the Pulse office

nearest you and ask for the “Power Applications Engineer.” © Copyright, 2008. Pulse Engineering, Inc. All rights reserved.

www.pulseeng.com

6

PRELIMINARY P666.A (3/08)

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