Design Example Report
41W (53Wpk) Power Supply using
TOP246Y
Title
Input: 85 – 265 VAC
Specification Output: 30V/80mA, 23V/0.5A, 12V/2A,
5V/2A, 3.3V/1.5A
Application
Author
Digital Video Recorder
Power Integrations Applications Department
Document
Number
DER-98
Date
September 12, 2005
1.0
Revision
Summary and Features
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No linear regulators used
One transformer solution
Good cross regulation
No heat sinks used in secondary
Low cost OVP using TO-92 SCR crowbar
Low EMI with low-cost EMI filter
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