DER-98
41W (53W pk) DVR
September 12, 2005
1 Introduction
This document is an engineering prototype report describing a PSU design using
TOP246Y. The design adopts a one-transformer solution, meets EMI and peak power with
good margin. The use of a smaller transformer is made possible by TOPSwitch-GX’s high
switching frequency with good switching performance, and the low EMI with a low-cost filter
is made possible because of TOPSwitch-GX’s frequency jitter and E-ShieldTM transformer
winding techniques.
This document contains the power supply specifications, schematic, Bill of materials,
transformer documentation, printed circuit layout, and performance data.
2 Photograph
Figure 1 – Circuit Board Photograph
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