GE Industrial Solutions QRW025 Series - Manual (Page 23)

Lineage Power 23
Data Sheet
August 23, 2010 36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A
QRW025 Series Power Modules; dc-dc Converters
Thermal Considerations
(continued)
Figure 41. Output Power Derating for QRW025A0Y (Vo =
1.8V) in Transverse Orientation with No
Baseplate; Airflow direction from VIN (+) to
VIN (–); VIN = 48V.
Figure 42. Output Power Derating for QRW025A0G (Vo
= 2.5V) in Transverse Orientation with No
Baseplate; Airflow direction from VIN (+) to
VIN (–); VIN = 48V.
Figure 43. Output Power Derating for QRW025A0F (Vo =
3.3) in Transverse Orientation with No
Baseplate; Airflow direction from VIN (+) to
VIN (–); VIN = 48V.
40
35
30
25
20
15
10
5
0
20 30 40 50 60 70 80 90
LOCAL AMBIENT TEMPERATURE, T (°C) A
O
U
TPUT CU
RR
ENT
, I
(A
)
O