DER-56 Datasheet, PDF (1/24 Pages) Power Integrations, Inc. – 4.8W Charger using LNK520P

Design Example Report
Title
4.8W Charger using LNK520P
Specification
Input: 85 – 265 VAC 50/60Hz
Output: 12V / 400mA
Application UPS Battery Charger
Author
Power Integrations Applications Department
Document
Number
DER-56
Date
April 20, 2005
Revision
1.0
Summary and Features
• Low component count battery charger to replace linear transformer and
regulator
• Highly efficient operation
• Current limited output
• Optimized switching characteristics minimizes EMI
- Achieves greater than 8dBµV margin to composite conducted limits
- No Y1 safety capacitor required for EMI compliance
• Small low cost EE16 transformer
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