Design Example Report
13.1 W AC-DC Flyback Converter Using
TNY268P
Title
Input: 90 – 264 VAC
Output: 5.25 V / 2.5 A
Specification
Application
Author
Adapter
Power Integrations Applications Department
DER-121
Document
Number
Date
November 3, 2005
1.0
Revision
Summary and Features
• Universal Input 90 VAC to 264 VAC
• Low Cost, Low Parts Count
• Minimum No Load Power Consumption <0.3 W at 264 VAC
• Meets CISPR22B EMI with Margin
• Efficiency >70% minimum.
• Meet CEC efficiency requirement with 5.25V2.5A.
• Meets +/-6KV-200A Lightning Surge.
• Cost reduced circuit does not require TVS
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