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AN3203 bảng dữ liệu(PDF) 24 Page - STMicroelectronics

tên linh kiện AN3203
Giải thích chi tiết về linh kiện  This application note describes the characteristics and performance
PDF  49 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3203 bảng dữ liệu(HTML) 24 Page - STMicroelectronics

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Electrical performance
AN3203
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Doc ID 17402 Rev 2
4.2
Thermal considerations
This demonstration board has been designed for operation with forced air cooling, very
common in ATX power supply applications. As the component temperatures depend on the
type of fan used and on the airflow path inside the board housing, a thermal map of the
board isn’t significant and has not been taken. When the system works at 25 °C with full
load and no forced air, temperatures are not so high. If a heatsink with lower thermal
resistance for MOSFETs Q201 and Q202 is used, fanless operation may be achieved. For
example, the same shape of the heatsink used for D1, Q1, Q2, D3, Q101, and Q102 could
be used for fanless operation. A picture of this application is shown in Figure 18.
Figure 18.
Fanless board



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