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AN3118 Datasheet(PDF) 25 Page - STMicroelectronics

Part # AN3118
Description  250 W transition-mode PFC pre-regulator with the new L6563H
PDF  31 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3118 Datasheet(HTML) 25 Page - STMicroelectronics

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AN3118
Thermal map
Doc ID 16847 Rev 2
25/31
6
Thermal map
In order to check the design reliability, a thermal mapping by means of an IR camera was
done. The thermal measures of the board, component side, at nominal input voltage are
shown in Figure 38 and 39. Some pointers, visible in the images, have been placed across
key components or components showing high temperature. The ambient temperature
during both measurements was 27 °C. It is possible to note that the PFC part has different
temperatures depending on the input mains.
Figure 38.
Thermal map at 115 Vac - 60 Hz - full load - PCB top side
Figure 39.
Thermal map at 230 Vac - 50 Hz - full load - PCB top side



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