DER-99 Datasheet, PDF (1/29 Pages) Power Integrations, Inc. – 17.4 W Power Supply using TOP244P

Design Example Report
Title
17.4 W Power Supply using TOP244P
Specification
Input: 160 – 275 VAC
Output: 3.3V/1.0A, 5.1V/1.0A, 9.0V/1.0A
Application Set Top Box
Author
Power Integrations Applications Department
Document
Number
DER-99
Date
September 12, 2005
Revision
1.0
Summary and Features
This report describes a prototype design for a Set Top Box using a
TOPSwitch-GX TOP244P, featuring:
• Self-recovering AC Line Overvoltage shutdown to prevent damage during high
voltage swells
• Meets 388 VAC swell
• Meets 6 kV surge
• Low EMI
• Small common mode choke
• Small Y-cap
• A low cost secondary ‘power good’ detection circuit
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