Datasheet

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UEI Series
50-60W Isolated Wide-Range DC/DC Converters
MDC_UEI Series 50-60W.C10 Page 5 of 14
12.0
12.5
13.0
13.5
14.0
14.5
15.0
15.5
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
100 LFM
Natural Convection
200 LFM
Output Current (Amps)
Ambient Temperature (
°
C)
UEI-3.3/15-Q12N Maximum Current Temperature Derating at Sea Level
(V
IN = 24V, air flow is from pin 2 to pin 1)
13.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
18.0
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Output Current (Amps)
Ambient Temperature (
°
C)
300 LFM
100 LFM
Natural Convection
400 LFM
UEI-3.3/18-Q48N Maximum Current Temperature Derating at Sea Level
(V
IN = 48V air flow direction is transverse)
200 LFM
Efficiency (%)
UEI-3.3/18-Q48
Efficiency vs. Line Voltage and Load Current @ 25ºC
Load Current (Amps)
70
72
74
76
78
80
82
84
86
88
90
123456789101112131415161718
V
IN
= 75V
V
IN
= 60V
V
IN
= 48V
V
IN
= 36V
V
IN
=
18V
V
IN
=
24V
1 2 3 4 5 6 7 8 9 101112131415
60
65
70
75
80
85
90
V
IN
= 36V
V
IN
= 24V
V
IN
=
10V
V
IN
=
12V
Efficiency (%)
UEI-3.3/15-Q12
Efficiency vs. Line Voltage and Load Current @ 25ºC
Load Current (Amps)
30
40
50
60
70
80
90
100
12345678910
V
IN
= 36V
V
IN
= 24V
V
IN
= 10V
Efficiency (%)
UEI-5-10-Q12
Efficiency vs. Line Voltage and Load Current @ 25ºC
Load Current (Amps)
Output Current (Amps)
Ambient Temperature (
°
C)
Natural Convection
UEI-5/10-Q12N Maximum Current Temperature Derating at Sea Level
(V
IN = 24V, airflow is from pin 2 to pin 1)
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
40 45 50 55 60 65 70 75 80 85
Typical Performance Curves