STMicroelectronics 400 W FOT-controlled PFC pre-regulator with the L6563S EVL6563S-400W EVL6563S-400W Fiche De Données

Codes de produits
EVL6563S-400W
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AN2994
Thermal measures
Doc ID 15796 Rev 2
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5 Thermal 
measures
To verify the reliability of the design, a thermal mapping by means of an IR camera has been 
done. 
 show the thermal measurements on the board component 
side at nominal input voltages and full load. Pointers (visible on the images) placed across 
the key components show the relevant temperature. 
 provides the correlation 
between the measured points and the components, for both thermal maps. The ambient 
temperature during both measurements was 27°C. According to the results obtained, all the 
board components are operating within their temperature limits.
Figure 38.
Thermal map at 115 Vac, 60 Hz - full load
Figure 39.
Thermal map at 230 Vac, 50 Hz - full load
         
Table 1.
Measured temperature at 115 Vac and 230 Vac - full load
Point
Component
Temperature at 115 Vac
Temperature at 230 Vac
D2
57.3 °C 
42.3 °C 
Q2
62.2 °C 
48.6 °C 
Q1
62.4 °C 
48.3 °C 
D3
60.2 °C 
47.8 °C 
C7
38.2 °C 
35.4 °C 
L1
53.4 °C 
37.2 °C 
L3
55.1 °C 
40.1 °C 
L4 – CORE
61.8 °C 
49.3 °C 
L4 – WINDING
68.7 °C 
52.8 °C