UWS Series
Sixteenth-brick DOSA-Compatible,
Wide Input Isolated DC-DC Converters
TYPICAL PERFORMANCE DATA, UWS-12/4.5-Q48
92
91
90
89
Ef?ciency vs. Line Voltage and Load Current @ 25 ° C
6.50
6.00
5.50
Power Dissipation vs. Load Current @ 25 ° C
88
87
86
85
84
83
Vin = 18V
Vin = 24V
Vin = 48V
5.00
4.50
4.00
3.50
82
81
80
79
78
77
76
Vin = 75V
3.00
2.50
2.00
1.50
1.00
Vin = 18V
Vin = 24V
Vin = 48V
Vin = 75V
75
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0.50
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
3.9
3.7
3.5
Load Current (A)
Maximum Current Temperature Derating at Sea Level
(Vin = 18V, air ?ow from Pin J1 to Pin J3)
3.9
3.7
3.5
Load Current (A)
Maximum Current Temperature Derating at Sea Level
(Vin = 24 air ?ow from Pin J1 to Pin J3 on PCB)
3.3
3.1
2.9
2.7
2.5
0.33, 0.5, 1.0, 1.5, & 2.0 m/s
(65, 100, 200, 300, & 400 LFM)
3.3
3.1
2.9
2.7
2.5
0.33, 0.5, 1.0, 1.5, & 2.0 m/s
(65, 100, 200, 300, & 400 LFM)
30
35
40
45
50
55
60
65
70
75
80
85
30
35
40
45
50
55
60
65
70
75
80
85
4.7
4.6
4.5
Ambient Temperature (oC)
Maximum Current Temperature Derating at Sea Level
(Vin = 48 air ?ow from Pin J1 to Pin J3 on PCB)
4.7
4.6
4.5
Ambient Temperature (oC)
Maximum Current Temperature Derating at Sea Level
(Vin = 75 air ?ow from Pin J1 to Pin J3 on PCB)
4.4
4.3
4.2
4.1
0.33, 0.5, 1.0, 1.5, & 2.0 m/s
(65, 100, 200, 300, & 400 LFM)
4.4
4.3
4.2
4.1
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
1.0, 1.5, & 2.0 m/s (200, 300, & 400 LFM)
4.0
30
35
40
45
50
55
60
65
70
75
80
85
4.0
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (oC)
Ambient Temperature (oC)
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MDC_UWS Series.C03 Page 15 of 25
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