1.8 Vout, 144 W OPERATING SPECIFICATIONS - (e.g. DC048B018T014FP
)
Parameter
Min
Typ
Max
Unit
Notes
Efficiency
86
89
87
%
mV
Nominal input; full load; 25°C
Ripple and noise
Output OVP setpoint
Dissipation, standby
Load regulation
109
2.48
7.6
p-p; Nominal input; full load; 20 MHz bandwith
25°C; recycle input voltage to restart (1 minute off)
No load
2.33
Volts
Watts
%
5.5
0.6
1.5
No load to full load; nominal input, deviation from setpoint
External
Output capacitance
Load current
27,000
80
µF
0
86.4
0
Amps
Amps
Amps
Current limit (peak)
Short circuit current (avg)
92
104
40
Shut down, may require PC enable to initiate restart
Shut down, may require PC enable to initiate restart
1.0
Efficiency vs. Output Current
95
90
85
80
75
70
65
Vin
36 V
48 V
75 V
0
8
16
24
32
40
48
56
64
72
80
80
80
Output Current (A)
Figure 4-1 – Efficiency vs. load
Power Dissipation vs. Output Current
Figure 4-4 – Transient response 100 – 50%, 3 x 4.7 µF ceramic bypass
capacitance
20
18
16
14
12
10
8
Vin
36 V
48 V
75 V
6
4
0
8
16
24
32
40
48
56
64
72
Output Current (A)
Figure 4-2 – Power dissipation vs. load
Ripple vs. Output Current
Figure 4-5 – Transient response 50 – 100%, 3 x 4.7 µF ceramic bypass
capacitance
100
90
80
70
60
50
40
30
20
10
0
Vin
NL
0
20
40
60
Output Current (A)
Figure 4-3 – Output ripple vs. load with no external bypass capacitance
Figure 4-6 – Output voltage ripple at nominal line and full load with no
external bypass capacitance.
VI Brick / 48V Input DC-DC Converter Modules
vicorpower.com
Rev. 1.0
Page 7 of 21
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