EPR-68 Datasheet, PDF (3/28 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 68 - 6.6 W DC-DC Flyback Converter Using DPA-Switch- (DPA423G)

19-Jul-2005
EP68 3.3 V, 2 A DC-DC Power Supply
1 Introduction
This engineering report describes a 3.3 V / 2 A (6.6 W) DC-DC converter that is based on
a DPA423G device. This design is intended as an evaluation platform for DPA-Switch
devices in the low cost surface-mount DIP package. High operating efficiency, low parts
count, small footprint and low height make this an ideal choice for Power over Ethernet
(PoE) and VoIP DC-DC converter applications.
This report contains the power supply specification, schematic, bill of materials,
transformer documentation, printed circuit board layout, and performance data.
Figure 1 - EP68 Populated Circuit Board Photograph.
Page 3 of 28
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