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DER-99

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DER-99 数据手册

Design Example Report

Title

17.4 W Power Supply using TOP244P

Input: 160 – 275 VAC

Output: 3.3V/1.0A, 5.1V/1.0A, 9.0V/1.0A

Specification

Application

Author

Set Top Box

Power Integrations Applications Department

DER-99

Document

Number

Date

September 12, 2005

1.0

Revision

Summary and Features

This report describes a prototype design for a Set Top Box using a

TOPSwitch-GX TOP244P, featuring:

• Self-recovering AC Line Overvoltage shutdown to prevent damage during high

voltage swells

• Meets 388 VAC swell

• Meets 6 kV surge

• Low EMI

• Small common mode choke

• Small Y-cap

• A low cost secondary ‘power good’ detection circuit

The products and applications illustrated herein (including circuits external to the products and transformer

construction) 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.

Power Integrations

5245 Hellyer Avenue, San Jose, CA 95138 USA.

Tel: +1 408 414 9200 Fax: +1 408 414 9201

www.powerint.com

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