Design Example Report
Title
Specification
Application
Author
Document
Number
Date
Revision
3W Power Supply using LNK501P
Input: 90 – 265 VAC
Output: 12V / 250mA
Industrial
Power Integrations Applications Department
DER-57
April 20, 2005
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.
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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%
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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
POWERINT [ POWER INTEGRATIONS, INC. ]
