STMicroelectronics EVL6562A-35WFLB evaluation board using the L6562A EVL6562A-35WFLB EVL6562A-35WFLB Fiche De Données
Codes de produits
EVL6562A-35WFLB
Thermal measurements
AN2838
14/23
DocID15099 Rev 2
4 Thermal
measurements
and
show thermal measurements on the component side of
the board at nominal input voltages and full load. Some pointers visible on the pictures
placed across key components show the relevant temperature.
placed across key components show the relevant temperature.
provides the
correlation between the measured points and components, for both thermal maps. The
ambient temperature during both measurements was 27 °C. According to these
measurement results, all components on the board function within their temperature limits.
ambient temperature during both measurements was 27 °C. According to these
measurement results, all components on the board function within their temperature limits.
Figure 20. Thermal map at 90 V
AC
- full
load
Figure 21. Thermal map at 265 V
AC
- full
load
Table 2. Measured temperature @ 90 V
AC
and 265 V
AC
- full load
Component
Temperature @ 90 V
AC
Temperature @ 265 V
AC
MOSFET Q1
57.8 °C
43.8 °C
Secondary diode D5
58.9 °C
58.1 °C
Diode bridge D1
65.9 °C
45.6 °C
Transformer TR1 (bobbin)
64.3 °C
65.1 °C
Transformer TR1 (core)
54.5 °C
55 °C
Choke T1
55.7 °C
36. 2 °C
Choke T2
56 °C
38.2 °C
Transil D2
70 °C
59 °C