Convection requirements for cooling (continued), S 50 and, S 50 an – GE Industrial Solutions NH050x-L Series User Manual
Page 16: Gh 49, Thermal considerations, Convection requirements for cooling, 16 lineage power, Continued), 25 °c
NH033x-L and NH050x-L Series Power Modules:
Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
March 2010
16
16
Lineage Power
Thermal Considerations
(continued)
Convection Requirements for Cooling
(continued)
8-2449(C)
Figure 47. NH050G-L Typical Power Dissipation vs.
Output Current, T
A
= 25 °C
8-2444(C)
Figure 48. NH033F-L Typical Power Dissipation vs.
Output Current, T
A
= 25 °C
8-2448(C)
Figure 49. NH050F-L Typical Power Dissipation vs.
Output Current, T
A
= 25 °C
With the known power dissipation and a given local
ambient temperature, the minimum airflow can be cho-
sen from the derating curves in Figures 50 and 51.
8-1425(C).c
Figure 50. NH033x-L Power Derating vs. Local
Ambient Temperature and Air Velocity
2.0
3.0
5.0
4.0
1
3
11
13
0.5
OUTPUT CURRENT, I
O
(A)
1.0
0
7
9
5
15
2
4
6
8
10
12
14
1.5
2.5
4.5
3.5
6.0
5.5
V
I
= 5.5 V
V
I
= 5.0 V
V
I
= 4.5 V
PO
WER DISSIP
A
TION,
P
D
(W)
1
2
6
7
8
9
0.5
3.0
OUTPUT CURRENT, I
O
(A)
2.0
1.5
2.5
10
0
3.5
1.0
4
5
3
V
I
= 5.5 V
V
I
= 5.0 V
V
I
= 4.5 V
PO
WER DISSIP
A
TION,
P
D
(W)
2.0
3.0
5.0
4.0
1
3
11
13
0.5
OUTPUT CURRENT, I
O
(A)
1.0
0
7
9
5
15
2
4
6
8
10
12
14
1.5
2.5
4.5
3.5
6.0
5.5
V
I
= 5.5 V
V
I
= 4.5 V
V
I
= 5.0 V
PO
WER DISSIP
A
TION,
P
D
(W)
0
25
45
55
125
0
2
AMBIENT TEMPERATURE, T
A
(˚C)
PO
WER DISSIP
A
TION, P
D
(W)
35
65
3
4
75
85
95
105 115
1
1.5 m/s (300 ft./min.)
1.0 m/s (200 ft./min.)
0.5 m/s
(100 ft./min.)
NATURAL
CONVECTION
2.0 m/s (400 ft./min.)
3.0 m/s (600 ft./min.)
TYPICAL 5.5 V
I
,
10 A
OUT
DISSIPATION
TYPICAL 5.0 V
I
,
10 A
OUT
DISSIPATION