Design Example Report
16W Low Profile Adapter Supply using
TOP245P
Title
Input: 90 – 265 VAC
Output: 5.25V / 3A
Specification
Application
Author
Video Game
Power Integrations Applications Department
DER-37
Document
Number
Date
April 27, 2004
1.0
Revision
Summary and Features
A TOP245P is used to create a low profile video game adapter that features the
following:
• Very low no-load consumption of <100mW @ 230 VAC
• Low parts count / Low cost
• Low profile, high power density
• EMI has 10 dB margin even with output grounded
• No Safety X-cap needed
• Meets thermal requirements at 45oC ambient with good margin
• No heatsinks
• >80% Efficiency even at high temp
• Tight Built-in Over Power Protection (no need for OCP)
• < 50uA Safety leakage current
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 ]
