DER-40 Datasheet, PDF (1/30 Pages) Power Integrations, Inc. – 21W (45W peak) Multiple Output Power Supply using TOP246Y

Design Example Report
Title
21W (45W peak) Multiple Output Power
Supply using TOP246Y
Input: 90 – 265 VAC
Specification Output: 12V / 0.72A (2.75A_PK), 5V / 1.4A,
3.3V / 1.51A, 3V / 0.1A, -22V/4mA
Application DVD Recorder with HDD
Author
Power Integrations Applications Department
Document
Number
DER-40
Date
February 22, 2005
Revision
3.0
Summary and Features
• No linear regulators used
• One transformer solution
• Small 6.8 mH common mode choke, small X-cap and Y-cap
• EMI has 12 dB margin
• Good cross regulation
• Small heatsinks
• Good peak power capability (can operate down to 75 Vac)
• EEL25 transformer does not use triple insulated wire, or Teflon sleeving
• Meets low power standby requirements
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