DER-112 Datasheet, PDF (1/17 Pages) Power Integrations, Inc. – 20 W and 30 W Boost Converters with Constant Current Output using DPA423G and DPA424G

Design Example Report
Title
20 W and 30 W Boost Converters with
Constant Current Output using DPA423G
and DPA424G
Input: 24 VDC
Specification Board #1 Output: 40 V / 500 mA CC
Board #2 Output: 60 V / 500 mA CC
Application LED (RGB) Backlight for LCD TV
Author
Power Integrations Applications Department
Document
Number
DER-112
Date
July 19, 2006
Revision
1.1
Summary and Features
• Boost Converter using DPA423 (20 W) and DPA424 (30 W)
• Simple Low Component Count
• High Efficiency (> 90 %)
• CC/CV (Constant Current and Constant Voltage)
• 400 KHz operation
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