Design Example Report
7.2 W Dual Output Power Supply using
TNY267G
Title
Input: 90 – 265 VAC
Output: 24V/150mA, 24V/150mA
Specification
Application
Author
Network Interface
Power Integrations Applications Department
DER-108
Document
Number
Date
October 26, 2005
1.0
Revision
Summary
o Dual output design featuring primary-side regulation to eliminate opto-coupler
o ESHIELD Transformer construction allows for simple input pi-filter and no safety
X or Y capacitors
o 27 total components including EMI filter
o Short Circuit Protection
o Hysteretic Thermal Shutdown
o Frequency Jitter
o Excellent Conducted EMI (>8 dB margin across spectrum)
o EcoSmart Technology
o Extremely low standby power consumption (<700 mW with 250 mW pre-load)
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