LW015C91 Lineage Power, LW015C91 Datasheet - Page 17

• Manufacturer Part Number: LW015C91
• Description: CONVERTER DC/DC 15V 15W OUT
• Manufacturer: Lineage Power
• Series: LW015r
• Type: Isolated with UVLOr

Specifications of LW015C91

• Output: 15V
• Number Of Outputs: 1
• Power (watts): 15W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: 6-DIP Module
• 1st Output: 15 VDC @ 1A
• Size / Dimension: 2.00" L x 1.00" W x 0.40" H (50.8mm x 25.4mm x 10.2mm)
• Power (watts) - Rated: 15W
• Operating Temperature: -40°C ~ 105°C
• Efficiency: 78%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: No

March 27, 2008
Thermal Considerations
The power module operates in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation of the unit.
Heat-dissipating components inside the unit are ther-
mally coupled to the case. Heat is removed by conduc-
tion, convection, and radiation to the surrounding
environment. Proper cooling can be verified by mea-
suring the case temperature. The case temperature
(T
Figures 41 and 42.
Figure 41. LW010 and LC010 Case Temperature
Figure 42. LW015 and LC015 Case Temperature
Note that the views in Figures 41 and 42 are of the sur-
face of the modules. The temperatures at these loca-
tions should not exceed the maximum case
temperature indicated on the derating curve. The out-
put power of the module should not exceed the rated
power for the module as listed in the Ordering Informa-
tion table.
Lineage Power
Note: Dimensions are in millimeters and (inches). Pin locations are
Note: Dimensions are in millimeters and (inches). Pin locations are
C
) should be measured at the position indicated in
5.1 (0.2)
for reference only.
for reference only.
10.2
(0.4)
Measurement Location
Measurement Location
IN
+
-
IN
+
-
15.2
(0.6)
(0.2)
5.1
dc-dc POWER MODULE
dc-dc POWER MODULE
LW015/LC015
LW010/LC010
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
OUT
OUT
+
-
+
-
8-1363(C).b
8-1363(C).c
Heat Transfer Characteristics
Increasing airflow over the module enhances the heat
transfer via convection. Figures 43 through 45 show
the maximum power that can be dissipated by the mod-
ule without exceeding the maximum case temperature
versus local ambient temperature (T
vection through 3.0 ms
Systems in which these power modules are used typi-
cally generate natural convection airflow rates of
0.25 ms
components in the system. Therefore, the natural con-
vection condition represents airflow rates of approxi-
mately 0.25 ms
shown in the following example.
Example
What is the minimum airflow necessary for an LW010A
operating at 48 V, an output current of 2.0 A, and a
maximum ambient temperature of 91 °C?
Solution:
Figure 43. LW010/LC010 Forced Convection Power
Given: V
Determine P
Determine airflow (Figure 43): v = 2.0 ms
(400 ft./min.)
3.5
2.5
1.5
0.5
3
2
1
0
40 45
–1
(50 ft./min.) due to other heat dissipating
I
Derating; Either Orientation
NATURAL CONVECTION
= 48 V, I
50
MAX AMBIENT TEMPERATURE, T
D
–1
1.0 ms
2.0 ms
3.0 ms
55
(Figure 58): P
(50 ft./min.). Use of Figure 43 is
60
O
-1
-1
-1
= 2.0 A (I
(200 ft./min.)
(400 ft./min.)
(600 ft./min.)
MAXIMUM CASE TEMPERATURE
65
–1
(600 ft./min.).
70
75
D
O
= 2.5 W
80
,
max
85
A
), T
) for natural con-
90
A
A
= 91 °C
(˚C)
95
–1
100
105
8-1375(C).a
110
17