JW075R1 Lineage Power, JW075R1 Datasheet - Page 16

• Manufacturer Part Number: JW075R1
• Manufacturer: Lineage Power

dc-dc Converters; 36 to 75 Vdc Input, 28 Vdc Output; 50 W to 150
Thermal Considerations
Heat Transfer Without Heat Sinks
Figure 36. Forced Convection Power Derating with
Figure 37. JW050R Power Dissipation vs. Output
16
16
9
8
7
6
5
4
3
2
1
0
0.3
35
30
25
20
15
10
5
0
0
No Heat Sink; Either Orientation
Current at 25 °C
0.5
0.1 m/s (NAT. CONV.)
10
LOCAL AMBIENT TEMPERATURE, T
20
0.7
V
OUTPUT CURRENT, I
(20 ft./min.)
I
= 75 V
30
0.9
40
1.1
50
V
I
= 48 V
V
1.3
I
60
= 36 V
(continued)
O
4.0 m/s (800 ft./min.)
3.5 m/s (700 ft./min.)
3.0 m/s (600 ft./min.)
2.5 m/s (500 ft./min.)
2.0 m/s (400 ft./min.)
1.5 m/s (300 ft./min.)
1.0 m/s (200 ft./min.)
0.5 m/s (100 ft./min.)
(A)
70
1.5
A
80
(°C)
(continued)
1.7
90
8-1150 (C).a
1.9
8-2532 (C)
100
Figure 38. JW075R Power Dissipation vs. Output
Figure 39. JW100R Power Dissipation vs. Output
12
10
13
12
11
10
8
6
4
2
0
0.3
9
8
7
6
5
4
0.36
Current at 25 °C
Current at 25 °C
0.86
0.8
1.36
OUTPUT CURRENT, I
OUTPUT CURRENT, I
1.3
V
1.86
I
= 75 V
2.36
1.8
V
V
V
O
O
I
I
I
= 75 V
= 48 V
= 36 V
2.86
(A)
(A)
Lineage Power
April 2008
2.3
3.36
V
V
I
I
= 36 V
= 48 V
8-2130 (C)
8-2533(C)
8.86
2.8