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DER-97

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DER-97 数据手册

Design Example Report

Title

21.7 W Power Supply using TOP246P

Input: 85 - 265 VAC

Output: 48 V / 450 mA

Specification

Application

Author

PoE AC Adapter

Power Integrations Applications Department

DER-97

Document

Number

Date

September 12, 2005

1.0

Revision

Summary and Features

• Single Sided PC board

• Reduced cost and component count

• Eliminates two y-capacitors to ground

• Eliminates secondary side common mode choke

• Eliminates ground wire differential choke

• High Efficiency (~ 80 %)

• Lower Cost Transformer Construction – no sleeving termination required

• Low EMI signature (both radiated and conducted emissions)

• Built-in output short circuit protection

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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