EPR-71 Datasheet, PDF (1/28 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 71 - 6.6 W DC-DC Converter Using DPA Switch- (DPA423G)

Title
Engineering Prototype Report for EP-71 –
6.6 W DC-DC Converter Using
DPA-Switch^™ (DPA423G)
Specification 36-72 VDC Input, 3.3 V, 2 A Output
Application
Standby Supply for Distributed Power
Architectures
Author
Power Integrations Applications Department
Document
Number
EPR-71
Date
19-Jul-2005
Revision
1.2
Summary and Features
• High efficiency, low cost, low component count solution
• Ideally suited as a standby supply in a larger 48 V input system
• The DPA-Switch IC integrates
− PWM controller and 220 V MOSFET switching device
− Accurate 400 kHz trimmed internal oscillator
− Accurate OV/UV protection
− Hysteretic thermal shutdown
− Overload, open loop and short-circuit protection
− Cycle skipping for regulation at no-load without a minimum load
• Small footprint 1.85" × 1", low overall height 0.9", two-layer PCB
• 100% surface mount construction
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.comT.
Power Integrations
5245 Hellyer Avenue, San Jose, CA 95138 USA.
Tel: [phone] Fax: [phone]
www.powerint.com