Power Integrations

5245 Hellyer Avenue, San Jose, CA 95138 USA.

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

www.powerint.com

Design Example Report

Title

3.15W Adapter with < 100 mW standby

using LNK500P

Specification

Input: 90 – 264 VAC

Output: 4.5V / 0.7A

Application

General Purpose Power Adapter

Author

Power Integrations Applications Department

Document

Number

DER-111

Date

October 26, 2005

Revision

1.0

Summary and Features

• No load power consumption ~89 mW @ 230 V

• Uses LNK500

• Low cost, low parts count

• No Y-cap needed to meet CISPR-22 EMI

• Very low AC leakage current

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