TIDT397 October 2024
2.4 Thermal Images
Thermal images are shown in Figure 2-15 and Figure 2-16.
Figure 2-15 385Vin, Full Load,
Top Side, 20 Minute SoakTable 2-2 Component Temperature,
385Vin, Full Load, Top Side
| Component | Max Temperature (°C) |
|---|---|
| Primary MOSFETs (Q3, Q7) | 49.8°C |
| Transformer (T1) | 78.6°C |
Figure 2-16 385Vin, Full Load,
Bottom Side, 20 Minute SoakTable 2-3 Component Temperature,
385Vin, Full Load, Bottom Side
| Component | Max Temperature (°C) |
|---|---|
| LLC controller (U4) | 44.4°C |
| LDO to SR controllers (U100) | 72.3°C |
| SR controllers (U1, U2) | 78.2°C |
| Synchronous rectifier MOSFETs (Q1, Q2, Q5, Q6) | 77.1°C |