TOP245P_1 Datasheet, PDF (1/25 Pages) Power Integrations, Inc. – Title 32W (47W peak) Multiple Output supply

Design Example Report
Title
32W (47W peak) Multiple Output supply
using TOP245P
Input: 195 - 265 VAC
Specification Output: 3.3V/3A, 5V/2A (2.5A Peak),
12V/0.5A (1.5A Peak), 20V/0.3A
Application Set Top Box
Author
Power Integrations Applications Department
Document
Number
DER-19
Date
March 30, 2004
Revision
1.0
Summary and Features
This report describes a design for a multiple output power supply, such as required for
a Set Top Box, featuring the following:
• Very high full power efficiency (> 83% at full power)
• 32W Continuous power rating
• <0.5W no-load consumption
• Efficiency >75% at 10% output power
• Small DIL08 package for TOP245P requiring no external heatsink
• 50W peak power capability allows for high peak output power demands (e.g.
for hard disk spin-up)
• Low EMI (Meets EN55022 with output ground connected to Earth)
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, Inc.
5245 Hellyer Avenue, San Jose, CA 95138 USA.
Tel: [phone] Fax: [phone]
www.powerint.com