www.powerint.com

A

9/02

DI-33

WORLD HEADQUARTERS

AMERICAS

Power Integrations, Inc.

San Jose, CA 95138 USA

Customer Service:

Phone:

+1 408-414-9665

Fax:

+1 408-414-9765

e-mail: usasales@powerint.com

CHINA

Power Integrations International

Holdings, Inc.

China

Phone:

+86-755-8367-5143

Fax:

+86-755-8377-9610

e-mail: chinasales@powerint.com

SINGAPORE

Power Integrations, Singapore

Republic of Singapore 308900

Phone:

+65-6358-2160

Fax:

+65-6358-2015

e-mail: singaporesales@powerint.com

JAPAN

Power Integrations, K.K.

Keihin-Tatemono 1st Bldg.

Japan

Phone:

+81-45-471-1021

Fax:

+81-45-471-3717

e-mail: japansales@powerint.com

EUROPE & AFRICA

Power Integrations (Europe) Ltd.

United Kingdom

Phone:

+44-1344-462-300

Fax:

+44-1344-311-732

e-mail: eurosales@powerint.com

KOREA

Power Integrations

International Holdings, Inc.

Seoul, Korea

Phone:

+82-2-782-2840

Fax:

+82-2-782-4427

e-mail: koreasales@powerint.com

TAIWAN

Power Integrations

International Holdings, Inc.

Taipei, Taiwan

Phone:

+886-2-2727-1221

Fax:

+886-2-2727-1223

e-mail: taiwansales@powerint.com

INDIA (Technical Support)

Innovatech

Bangalore, India

Phone:

+91-80-226-6023

Fax:

+91-80-228-9727

e-mail: indiasales@powerint.com

APPLICATIONS HOTLINE

APPLICATIONS FAX

World Wide +1-408-414-9660

World Wide +1-408-414-9760

Table 1. Transformer Construction Information.

For the latest updates, visit our Web site: www.powerint.com

Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability.

Power Integrations does not assume any liability arising from the use of any device or circuit described herein, nor does it convey any

license under its patent rights or the rights of others. The products and applications illustrated herein may be covered by one or more U.S.

and foreign patents or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power

Integrations’ patents may be found at www.powerint.com.

The PI Logo, TOPSwitch, TinySwitch and EcoSmart are registered trademarks of Power Integrations, Inc.

PI Expert is a trademark of Power Integrations, Inc. ©Copyright 2002, Power Integrations, Inc.

1.0

0.15

10.0

-100.0

-20

-10

0

10

20

30

40

50

60

80

70

MHz

QP

AV

Average

Quasi Peak

Figure 3. Conducted EMI with Artificial Hand Connected to Output Return.

Figure 2. P

0

300 400 500 600 700 800

200

100

400

200

0

600

800

1000

1200

115 VAC

230 VAC

TRANSFORMER PARAMETERS

Core Material

Himag MZ4 EEL25.4, or equivalent,

Gap for A

2

Bobbin

EEL25 Vertical 14 Pins

Winding Details

Shield: 32T, 2 x 32 AWG

Primary: 64T, 2 x 32 AWG

Bias: 6T, 4 x 32 AWG

Shield 2: 4T, 4 x 32 AWG

+12 V: 4T, 4 x 32 AWG

+5 V: 1T, 14 mm Cu Foil

+3.3 V: 2T, 14 mm Cu Foil

-12 V: 7T, 4 x 32 AWG

Inductance

1420 µH ±25%

Primary Resonant

Frequency

(Pins 1-4, all other open)

500 kHz (minimum)

Winding Order

(Pin Numbers)

3 mm margin tape on both

sides of bobbin.

Shield (NC-5), tape,

Primary (1-4), tape,

Bias (7-6), tape,

Shield (NC-7), tape,

12 V (13-8), 3.3 V (11-9),

5 V (9-13), tape,

-12 V (14-11), tape

(NC - no connect)