DER-120
22 W Triple Output Flyback – DPA424R
October 26, 2005
1 Introduction
This document is an engineering report describing a triple output Flyback converter employing
the DPA424R. The input voltage range is 28 to 60 VDC providing a regulated +3.3 V at 2 A and
a cross-regulated +9 V @ 0.6 A and +24 V @ 0.4 A.
This document contains the power supply specification, schematic, and bill of materials,
transformer documentation, printed circuit layout, and performance data.
+VIN
+3.3V
-VIN
GND
+9V
GND
+24V
Figure 1 – Populated Circuit Board (Top-side).
Power Integrations
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