Design Example Report
Title
Specification
Application
Author
Document
Number
Date
Revision
Notable Features
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Low Standby Power Consumption (< 1 W Input for 0.3 W Output @ 265 VAC)
Meets 12 V Regulation Requirements for Low Cost LCD Panel without Linear
Regulator
Meets Output Ripple Requirements During 12 V Burst Load Test
Meets 5 V LPS Standard without Fuse (Auto-restart)
Built-In OVP (Auto-restart)
Meets CISPR22B Conducted EMI with Margin
High Efficiency (81% Minimum, 84% Typical)
Low Parts Count
No TVS for Primary Snubber
46 W Power Supply using TOP246Y
Input: 90 – 265 VAC
Output: 5 V / 2 A, 12 V / 3 A
LCD Monitor
Power Integrations Applications Department
DER-94
September 12, 2005
1.0
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, INC. ]
