DC048B Datasheet, PDF (8/21 Pages) Vicor Corporation – 48 V Input DC-DC Converter Modules

2.5 Vout, 175 W OPERATING SPECIFICATIONS - (e.g. DC048B025T017FP)
Parameter
Efficiency
Ripple and noise
Output OVP setpoint
Dissipation, standby
Load regulation
Output capacitance
Load current
Current limit (peak)
Short circuit current (avg)
Min
Typ
Max
Unit
Notes
87
90
%
Nominal input; full load; 25°C
65
95
mV
p-p; Nominal input; full load; 20 MHz bandwith
3.5
3.71
Volts
25°C; recycle input voltage to restart (1 minute off)
5.5
7.6
Watts
No load
±0.6
±1.5
%
No load to full load; nominal input, deviation from setpoint
12,000
µF
External
0
70
Amps
75.6
80.5
91
Amps
Shut down, may require PC enable to initiate restart
0
1.0
35
Amps
Shut down, may require PC enable to initiate restart
Efficiency vs. Output Current
95
90
85
Vin
80
36 V
48 V
75 V
75
70
65
0 7 14 21 28 35 42 49 56 63 70
Output Current (A)
Figure 5-1 – Efficiency vs. load
Power Dissipation vs. Output Current
24
22
20
18
16
Vin
14
36 V
48 V
12
75 V
10
8
6
4
0 7 14 21 28 35 42 49 56 63 70
Output Current (A)
Figure 5-2 – Power dissipation vs. load
90
80
70
60
50
40
30
20
10
0
0
Ripple vs. Output Current
10
20
30
40
50
60
Output Current (A)
Vin
NL
70
Figure 5-3 – Output ripple vs. load with no external bypass capacitance
Figure 5-4 – Transient response 100 – 50%, 3 x 4.7 µF ceramic bypass
capacitance
Figure 5-5 – Transient response 50 – 100%, 3 x 4.7 µF ceramic bypass
capacitance
Figure 5-6 – 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 8 of 21