Datasheet
TYPICAL PERFORMANCE CURVES
4 6 8 10 14 16 18 2012 24 26 28
30
22
72
74
70
78
76
82
80
84
88
86
90
VIN = 48V
VIN = 75V
Efficiency (%)
Load Current (Amps)
VIN = 36V
UCQ-1.8/30-D48 Efficiency vs Line Voltage and Load Current @25˚ C
VIN = 48V
VIN = 75V
Efficiency (%)
Load Current (Amps)
VIN = 36V
40
50
55
65
75
60
70
85
80
90
45
63 9 12 15 18 21 24 27 75 30
95
UCQ-1.2/30-D48 Efficiency vs Line Voltage and Load Current @25˚ C
Efficiency (%)
Load Current (Amps)
3 114 5 6 7 9 10 128 13 2114 15 16 17 19 20 22 2423
25
18
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
UCQ-1.5/25-D48 Efficiency vs Line Voltage and Load Current @25˚ C
VIN = 48V
VIN = 75V
VIN = 36V
Output Current (Amps)
Ambient Temperature (
°
C)
400 LFM
200 LFM
300 LFM
100 LFM
30
0
10
15
25
35
20
30
5
35 40 45 50 55 60 65 70 75
80
UCQ-1.2/30-D48 Maximum Current Temperature Derating
No baseplate, VIN = 48V (at sea level), longitudinal airflow
Output Current (Amps)
Ambient Temperature (
°
C)
400 LFM
200 LFM
300 LFM
100 LFM
30
0
10
15
25
20
30
5
35 40 45 50 55 60 65 70 75
80
UCQ-1.5/25-D48 Maximum Current Temperature Derating
No baseplate, VIN = 48V (at sea level), longitudinal airflow
Output Current (Amps)
Ambient Temperature (
°
C)
400 LFM
200 LFM
300 LFM
100 LFM
Natural convection
30
22
24
18
20
28
26
32
30
35 40 45 50 55 60 65 70 75
80
UCQ-1.8/30-D48 Maximum Current Temperature Derating
No baseplate, VIN = 48V (at sea level), longitudinal airflow
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Single Output UCQ Models
Low-Profile, Quarter Brick, 8.3-40 Amp
Isolated DC-DC Converters
MDC_UCQ Models.E02 Page 11 of 24