外文翻譯---低電壓反激式dc-dc轉(zhuǎn)換器的在電源中的應(yīng)用(編輯修改稿)
2025-02-11 02:48 本頁面
【文章內(nèi)容簡介】 , which has 6 turns in series. The first secondary winding is marked in red, which has 3 turns in parallel. The second secondary winding is marked in blue, which has 1 turn. It will be totally 6 layers in the multilayer transformer structure [6].Figure 4 . Winding geometry by interleaving methodBased on the puter simulation, the 6layer planar transformer winding structure can be drawn in Figures 5 10. The primary side winding has 6 turns in series. In Figures 6 and 9, it clearly shows that the turns in different layers are connecting through via hole. In one of the secondary winding which is the +16V one, it has 3 turns in parallel as shown in Figures 5, 8 and 10. The one turn secondary winding (6V) is shown in Figure 7.Figure 5 . Top layer winding structure (secondary 1)Figure 6 . Inner Layer 1 winding structure (primary)Figure 7 . Inner Layer 2 winding structure (secondary 2)Figure 8 . Inner Layer 3 winding structure (secondary 1)Figure 9 . Inner Layer 4 winding structure (primary)Figure 10 . Bottom layer winding structure (secondary 1)The core loss of the transformer is approximately 47mW, paring to the winding loss of 154mW, it i s about 30%, as shown in Figure 11 [7].Figure 11. Power loss of transformerThe EI core transformer PCB in this design will be integrated into the converter’s PCB, rather than a separate board being added to the whole circuit [8], which will reduce the cost of the PCB fabrication since multilayer PCB layout is expensive.V. CONVERTER CIRCUIT PCB LAYOUTIn this project, we make the transformer part layout as one ponent。 it will be integrated into the whole circuit PCB layout. It has 6 layers totally. The isolation requirement is 1500V, so the layout takes a little more space than the one without any isolation rules. In Figure 12, we make the primary side ponents all in the right hand side of the board, the secondary sides all in the left hand side of the board, and the transformer in between them. The wire traces have been marked with different colors in order to show the specific layer that the traces are on The board area is about 07, It can always reduce the size of the board by adding more layers. However, the cost will be more expensive. It is important to balance these factors. The size of the PCB board meets the specs of the project.Figure 12. PCB layout of the flyback converterVI. CONCLUSIONIn this paper, a flyback DC DC converter for low voltage power supply application has been designed. The modeling and simulation re
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