Datasheet
TYPICAL PERFORMANCE CURVES
0
2
4
6
8
10
12
14
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
60
64
68
72
76
80
84
88
92
96
UCQ-5/20-D24 Efficiency and Power Dissipation @25°C
Load Current (Amps)
Efficiency (%)
Power Dissipation (watts)
V
IN
= 36V
V
IN
= 18V
V
IN
= 24V
Power Dissipation
V
IN
= 24V
30 35 40 45 50 55 60 65 70 75 80 85
0
2
4
6
8
10
12
14
16
18
20
22
UCQ-5/20-D24 Maximum Current Temperature Derating at Sea Level
(VIN = 24V, no baseplate, airflow is from -Vin to +Vin)
Output Current (Amps)
Ambient Temperature (°C)
400 LFM
200 LFM
300 LFM
100 LFM
30 35 40 45 50 55 60 65 70 75 80 85
0
5
10
15
20
25
UCQ-5/20-D24 Maximum Current Temperature Derating at Sea Level
(V
IN = 24V, with baseplate, airflow is from -Vin to +Vin)
Output Current (Amps)
Ambient Temperature (°C)
400 LFM
200 LFM
300 LFM
100 LFM
95
90
85
80
75
70
UCQ-5/20-D48
Efficiency vs Line Voltage and Load Current @25°C
4 6 8 10 12 14 16 18 20
Load Current (Amps)
Efficiency (%)
V
IN
= 75V
V
IN
= 36V
V
IN
= 50V
30 35 40 45 50 55 60 65 70 75 80 85
0
2
4
6
8
10
12
14
16
18
20
22
UCQ-5/20-D48 Maximum Current Temperature Derating at Sea Level
(V
IN = 48V, no baseplate, airflow is from -Vin to +Vin)
Output Current (Amps)
Ambient Temperature (°C)
400 LFM
200 LFM
300 LFM
100 LFM
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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 16 of 24