DER-57 Datasheet, PDF (1/26 Pages) Power Integrations, Inc. – 3W Power Supply using LNK501P

Design Example Report
Title
3W Power Supply using LNK501P
Specification
Input: 90 – 265 VAC
Output: 12V / 250mA
Application Industrial
Author
Power Integrations Applications Department
Document
Number
DER-57
Date
April 20, 2005
Revision
1.0
Summary and Features
This document is an engineering prototype report for a universal input, power
factor corrected power supply unit providing 12V at 250mA.
• Very low cost, low component count isolated power supply
• Extremely simple circuit configuration designed for high volume low cost manufacture
• High input power factor
• Small EE16 transformer allows compact size
• No Optocoupler or sense resistors required
• Efficiency greater than 65%
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: [phone] Fax: [phone]
www.powerint.com