TIDT315 December 2022
The aluminum adapter (150 mm × 75 mm × 5 mm) is used by mounting the converter to a chassis, which is the thermal interface. This area is also used for a standard heat sink; 150 mm × 75 mm from stock. The measurement with the heat sink is worst case - the board is horizontal on the bench, with the heat sink upside down. The best case is the board in a vertical position, with fins in a vertical position as well.
Individually, the adapter provides a minor improvement, the board itself is well routed regarding power losses:
Current | Pure PCB | With Adapter | With Adapter and Heat Sink | Benefit |
---|---|---|---|---|
30 AOUT | 52.4°C | 49.8°C | 47.7°C | –0.47 K |
40 AOUT | 65.4°C | 60.4°C | 56.1°C | –9.3 K |
50 AOUT | 81.4°C | 73.5°C | 66.4°C | –015 K |
60 AOUT | Not available | 89.6°C | 77.6°C |