GE Industrial Solutions NaOS NXA025 SMT - Manual (Page 8)

Data Sheet
October 5, 2009 Naos TM NXA025 SMT Non-isolated Power Modules:
10 – 14Vdc Input; 0.8Vdc to 5.5Vdc Output; 25A output current
LINEAGE POWER 8
Characteristic Curves (continued)
The following figures provide typical thermal derating curves for NXA025A0X –S (Figures 19 and 20 show derating
curves with base plate).
0
5
10
15
20
25
30
20 30 40 50 60 70 80
1 00LFM
200LFM
300LFM
400LFM
0
5
10
15
20
25
30
20 30 40 50 60 70 80
1 00LFM
200LFM
300LFM
400LFM
O
U
T
P
UT
CU
RRE
NT
, I
o
(A
)
AMBIENT TEMPERATURE, T
A
O C
O
U
T
P
UT
CU
RRE
NT
, I
o
(A
)
AMBIENT TEMPERATURE, T
A
O C
Figure 15. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=1.2Vdc). Figure 18. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=5.0 Vdc).
0
5
10
15
20
25
30
20 30 40 50 60 70 80
1 00LFM
200LFM
300LFM
400LFM
0
5
10
15
20
25
30
20 30 40 50 60 70 80
200 LFM
100 LFM
O
U
TP
UT
CU
RRE
NT
, Io
(A
)
AMBIENT TEMPERATURE, T
A
O C
O
U
TP
UT
CU
RRE
NT
, Io
(A
)
AMBIENT TEMPERATURE, T
A
O C
Figure 16. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=1.8 Vdc). Figure 19. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=3.3 Vdc) with baseplate.
0
5
10
15
20
25
30
20 30 40 50 60 70 80
1 00LFM
200LFM
300LFM
400LFM
0
5
10
15
20
25
30
20 30 40 50 60 70 80
200 LFM
100 LFM
300 LFM
400 LFM
OUT
P
UT
C
URR
E
N
T, Io
(
A
)
AMBIENT TEMPERATURE, T
A
O C
OUT
P
UT
C
URR
E
N
T, Io
(
A
)
AMBIENT TEMPERATURE, T
A
O C
Figure 17. Derating Output Current versus Local
Ambient Temperature and Airflow
(Vin = 12Vdc,
Vo=3.3 Vdc).
Figure 20. Derating Output Current versus Local
Ambient Temperature and Airflow (Vin = 12Vdc,
Vo=5.0 Vdc) with baseplate.