GE Industrial Solutions LC-LW015-Series - Manual (Page 18)

18 18 Lineage Power
Data Sheet
March 27, 2008 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Thermal Considerations
(continued)
8-1377(C).a
Figure 44. LC015 Forced Convection Power
Derating; Either Orientation
8-1376(C).a
Figure 45. LW015 Forced Convection Power
Derating; Either Orientation
8-1382(C)
Note: The power dissipation of this unit is shown at T C = T C , max
because the efficiency of this power module drops at high
temperatures.
Figure 46. LC015A Power Dissipation at Maximum
Case Temperature
8-1808(C)
Figure 47. LC015B, C Typical Power Dissipation vs.
Normalized Output Current at T
C
= 25 °C
UNITS PO
WER DISSIP
A
TION, P
D
(W)
10 20 30 40 50 60 70 0 80 90 100 110 120
0
3.5
1.5
1
0.5
2
4.5
4
2.5
3
5
MAX AMBIENT TEMPERATURE, T A (˚C)
NATURAL CONVECTION
3.0 ms -1 (600 ft./min.)
1.0 ms -1 (200 ft./min.)
2.0 ms -1 (400 ft./min.)
MAXIMUM CASE TEMPERATURE
UNITS PO
WER DISSIP
A
TION, P
D
(W)
50 60 70 80 90 100
0
3.5
1.5
1
0.5
2
4.5
4
2.5
3
5
MAX AMBIENT TEMPERATURE, T A (˚C)
110 40
MAXIMUM CASE TEMPERATURE
2.0 ms -1 (400 ft./min.)
3.0 ms -1 (600 ft./min.)
1.0 ms -1 (200 ft./min.)
NATURAL CONVECTION
3.5
2.5
2.0
1.5
0.0 0.5 1.0 1.5 2.0 2.5
0.0
4.0
OUTPUT CURRENT, I O (A)
0.5
3.0
3.0
1.0
PO
WER DISSIP
A
TION,
P
D
(W)
V I = 20 V
V I = 27 V
V I = 36 V
V I = 18 V
4.5
0.16 0.32 0.48 0.64 0.80
0
3
NORMALIZED OUTPUT CURRENT (I O /I O , max )
2
4
0.00
1
0.96
5
6
V I = 36 V
V I = 27 V
V I = 18 V
PO
WER DISSIP
A
TION,
P
D
(W)