DER-45 Datasheet, PDF (1/9 Pages) Power Integrations, Inc. – 1.8W non-isolated Power Supply using LNK304

Design Example Report
Title
1.8W non-isolated Power Supply using
LNK304
Specification
Input: 85-265V_AC
Output: 12V/150mA
Application Home Appliance
Author
Power Integrations Applications Department
Document
Number
DER-45
Date
April 8, 2005
Revision
1.0
Objective
This report lists a design for a single output offline non-isolated power supply for white goods
low cost applications.
• Highly integrated solution
• Lowest possible component count
• No optocoupler or zener diode required for regulation
• Integrated thermal overload protection with automatic recovery
• Less then 300mW no-load consumption
• Very high efficiency at full load
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