Datasheet

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ULT Series
Thirty-Second-Brick Isolated DC/DC Converters
with 2:1 Wide Input Range
MDC_ULT Series.F05 Page 6 of 26
TYPICAL PERFORMANCE DATA, ULT-3.3/7.5-D48-C
Effi ciency vs. Line Voltage and Load Current @ 25°C
78
79
80
81
82
83
84
85
86
2.50 3.50 5.50 7.00 7.50
VIN = 36V
V
IN = 48V
V
IN = 60V
V
IN = 75V
Efficiency (%)
Load Current (Amps)
Power Dissipation @ 25°C
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.25
3.50
3.75
4.00
4.25
4.50
Watts
Amps
VIN = 36V
V
IN = 48V
V
IN = 60V
V
IN = 75V
Maximum Current Temperature Derating at sea level
Vin = 36V (air fl ow from Pin 3 to Pin 1 on PCB)
Maximum Current Temperature Derating at sea level
Vin = 60V (air fl ow from Pin 3 to Pin 1 on PCB)
Maximum Current Temperature Derating at sea level
Vin = 48V (air fl ow from Pin 3 to Pin 1 on PCB)
Maximum Current Temperature Derating at sea level
Vin = 75V (air fl ow from Pin 3 to Pin 1 on PCB)
3
4
5
6
7
8
30 35 40 45 50 55 60 65 70 75 80 85
Output Current (Amps)
Ambient Temperature (°C)
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
3
4
5
6
7
8
30 35 40 45 50 55 60 65 70 75 80 85
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
Output Current (Amps)
Ambient Temperature (°C)
3
4
5
6
7
8
30 35 40 45 50 55 60 65 70 75 80 85
Output Current (Amps)
Ambient Temperature (°C)
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
3
4
5
6
7
8
30 35 40 45 50 55 60 65 70 75 80 85
Output Current (Amps)
Ambient Temperature (°C)
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)