48 Vout, 220 W OPERATING SPECIFICATIONS - (e.g. DC048B480T022FP
)
Parameter
Min
Typ
Max
Unit
Notes
Efficiency
90
93
%
mV
Nominal input; full load; 25°C
Ripple and noise
Output OVP setpoint
Dissipation, standby
Load regulation
160
200
59.4
7.6
p-p; Nominal input; full load; 20 MHz bandwith
25°C; recycle input voltage to restart (1 minute off)
No load
56.0
Volts
Watts
%
5.5
0.6
1.5
No load to full load; nominal input, deviation from setpoint
External
Output capacitance
Load current
47
µF
0
4.95
0
4.58
5.95
2.29
Amps
Amps
Amps
Current limit (peak)
Short circuit current (avg)
5.27
1.0
Shut down, may require PC enable to initiate restart
Shut down, may require PC enable to initiate restart
Efficiency vs. Output Current
95
90
85
80
75
70
65
Vin
36 V
48 V
75 V
0
0.45 0.9 1.35 1.8 2.25 2.7 3.15 3.6 4.05 4.5 4.95
Output Current (A)
Figure 14-1 – Efficiency vs. load
Figure 14-4 – Transient response 100 – 50%, 3 x 4.7 µF ceramic bypass
capacitance
Power Dissipation vs. Output Current
20
18
16
14
12
10
8
Vin
36 V
48 V
75 V
6
4
0
0.45 0.9 1.35 1.8 2.25 2.7 3.15 3.6 4.05 4.5 4.95
Output Current (A)
Figure 14-2 – Power dissipation vs. load
Figure 14-5 – Transient response 50 – 100%, 3 x 4.7 µF ceramic bypass
capacitance
Ripple vs. Output Current
160
140
120
100
80
Vin
NL
60
40
20
0
0
1
2
3
4
5
Output Current (A)
Figure 14-3 – Output ripple vs. load with no external bypass capacitance
Figure 14-6 – 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 17 of 21
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