Datasheet

UWQ-12/20-T48 Series
Wide Input, Isolated DOSA Quarter Brick DC-DC Converters
MDC_UWQ-12/20-T48 Series.A02 Page 9 of 29
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PERFORMANCE DATA, UWQ-12/20-T48xS
Power Dissipation vs. Load Current @ +25°C
0
5
10
15
20
25
2468101214161820
Output Load Curre nt (Amps)
Power Dissipation (Watts)
VIN = 18V
V
IN = 24V
V
IN = 36V
V
IN = 48V
VIN = 60V
Effi ciency vs. Line Voltage and Load Current @ +25°C
70
72
74
76
78
80
82
84
86
88
90
92
94
2 4 6 8 101214161820
Load Curre nt (Amps)
Efficiency (%)
VIN = 18V
V
IN = 24V
V
IN = 36V
V
IN = 48V
VIN = 60V
Maximum Current Temperature Derating at sea level
(Vin = 24V, air fl ow from Pin 3 to Pin 1 on PCB, with baseplate)
Maximum Current Temperature Derating at sea level
(Vin = 18V, air fl ow from Pin 3 to Pin 1 on PCB, with baseplate)
Maximum Current Temperature Derating at sea level
(Vin = 48V, air fl ow from Pin 3 to Pin 1 on PCB, with baseplate)
Maximum Current Temperature Derating at sea level
(Vin = 36V, air fl ow from Pin 3 to Pin 1 on PCB, with baseplate)
0
3
6
9
12
15
18
21
30 35 40 45 50 55 60 65 70 75 80 85
Output Current (Amps)
Ambient Temperature (°C)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
Natural Convection
0
3
6
9
12
15
18
21
30 35 40 45 50 55 60 65 70 75 80 85
Output Current (Amps)
Ambient Temperature (°C)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
Natural Convection
0
3
6
9
12
15
18
21
30 35 40 45 50 55 60 65 70 75 80 85
Output Current (Amps)
Ambient Temperature (°C)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
Natural Convection
0
3
6
9
12
15
18
21
30 35 40 45 50 55 60 65 70 75 80 85
Output Current (Amps)
Ambient Temperature (°C)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
Natural Convection