107587800 Lineage Power, 107587800 Datasheet - Page 16

• Manufacturer Part Number: 107587800
• Description: Module DC-DC 1-OUT 12V 3A 30W 9-Pin
• Manufacturer: Lineage Power
• Type: Step Downr

Specifications of 107587800

• Output Current: 3 A
• Output Voltage: 12 V
• Input Voltage: 48 V
• Number Of Outputs: 1
• Output Power: 30 W

Lineage Power36 Vdc to 75 Vdc Inputs; 30 W
Thermal Considerations
Forced Convection Cooling
Figure 32. JW030B-M Power Dissipation vs. Output
Figure 33. JW030C-M Power Dissipation vs. Output
16
8
7
6
5
4
3
2
1
0
8
7
6
5
4
3
2
1
0
0.0
0.0
Current
Current
0.5
V
V
V
0.5
I
I
I
= 72 V
= 54 V
= 36 V
OUTPUT CURRENT, I
OUTPUT CURRENT, I
1.0
1.0
(continued)
1.5
(continued)
O
O
(A)
V
V
V
(A)
I
I
I
= 72 V
= 54 V
= 36 V
1.5
2.0
8-1048(C)
8-1049(C)
2.0
2.5
Figure 34. Forced Convection Power Derating with
Heat Sink Selection
Several heat sinks are available for these modules.
The case includes through-threaded mounting holes
allowing attachment of heat sinks or cold plates from
either side of the module. The mounting torque must
not exceed 0.56 N-m (5 in./lb.).
Figure 35 shows the case-to-ambient thermal resis-
tance, θ (°C/W), for these modules. These curves can
be used to predict which heat sink will be needed for a
particular environment. For example, if the JW030A-M
dissipates 7 W of heat in an 80 °C environment with an
airflow of 0.7 ms
sink required can be determined as follows:
where:
θ ð (100 – 80)/7
θ ð 2.9 °C/W
From Figure 35, the 1/2 in. high heat sink or greater is
required.
9
8
7
6
5
4
3
2
1
0
T
30
C, max
P
T
No Heat Sink; Either Orientation
θ = module’s total thermal resistance
D
A
2.0 ms
1.0 ms
0.5 ms
40
LOCAL AMBIENT TEMPERATURE, T
= case temperature (See Figure 27.)
= inlet ambient temperature
= power dissipation
CONVECTION
–1
θ
-1
-1
-1
(See Figure 27.)
≤
(400 ft./min.)
(200 ft./min.)
(100 ft./min.)
(130 ft./min.), the minimum heat
50
NATURAL
(
T
C
,
max
60
–
T
A
70
) P
⁄
March 26, 2008
D
80
Lineage Power
A
(˚C)
90
8-1051(C)
100