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AN3105 bảng dữ liệu(PDF) 17 Page - STMicroelectronics

tên linh kiện AN3105
Giải thích chi tiết về linh kiện  lighting applications
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AN3105 bảng dữ liệu(HTML) 17 Page - STMicroelectronics

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AN3105
Functional check
Doc ID 16774 Rev 2
17/30
4.6
Thermal map
In order to check the design reliability, a thermal mapping by means of an IR camera was
done. In Figure 13 and 14 the thermal measurements of the board, both sides, at nominal
input voltage are shown. Some pointers visible on the images have been placed across key
components. The ambient temperature during both measurements was 27 °C.
Figure 13.
Thermal map at 230 VAC - 50 Hz - full load - PCB top side
Table 2.
Thermal maps reference points - PCB top side
Point
Reference
Description
A
L2
EMI filtering inductor
B
L1
PFC inductor
C
D3
Bridge rectifier
D
Q2
PFC MOSFET
E
L3
Output filter inductor
F
T1
Resonant power transformer - primary winding
G
T1
Resonant power transformer - ferrite core
H
T1
Resonant power transformer - secondary winding



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