Datasheet
TYPICAL PERFORMANCE CURVES
50
55
60
65
70
75
80
85
90
95
0
2
4
6
8
10
12
14
16
18
3 5 7 9 11 13 15 17 19 21 23 25
UCQ-5/25-D48 Efficiency and Power Dissipation @25˚ C
Load Current (Amps)
Efficiency (%)
Power Dissipation (watts)
V
IN
= 36V
V
IN
= 75V
V
IN
= 48V
Power Dissipation
V
IN
= 48V
30 35 40 45 50 55 60 65 70 75 80 85
0
5
10
15
20
25
30
UCQ-5/25-D48 Maximum Current Temperature Derating at Sea Level
(V
IN
= 48V, no baseplate, airflow is from Vin to Vout)
400 LFM
200 LFM
300 LFM
100 LFM
Output Current (Amps)
Ambient Temperature (
°
C)
50
55
60
65
70
75
80
85
90
95
100
0.8 1.6 2.4 3.2 4 4.8 5.6 6.4 7.2 8.3
0
2
4
6
8
10
12
14
16
18
20
UCQ-12/8.3-D48 Efficiency and Power Dissipation @25˚ C
Load Current (Amps)
Efficiency (%)
Power Dissipation (watts)
V
IN
= 36V
V
IN
= 75V
V
IN
= 48V
Power Dissipation
V
IN
= 48V
30 35 40 45 50 55 60 65 70 75 80 85
0
1
2
3
4
5
6
7
8
9
UCQ-12/8.3-D48 Maximum Current Temperature Derating at Sea Level
(V
IN = 48V, no baseplate, airflow is from Vin to Vout)
400 LFM
200 LFM
300 LFM
100 LFM
Output Current (Amps)
Ambient Temperature (
°
C)
4
5
6
7
8
9
10
30 35 40 45 50 55 60 65 70 75 80 85
UCQ-12/8.3-D48 Maximum Current Temperature Derating at Sea Level
(V
IN
= 48V, with baseplate, longitudinal airflow)
400 LFM
200 LFM
300 LFM
100 LFM
Output Current (Amps)
Ambient Temperature (
°
C)
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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 17 of 24