VI Brick / 48V Input DC-DC Converter Modules

vicorpower.com

Rev. 1.0

Page 13 of 21

Parameter

Min

Typ

Max

Unit

Notes

Efficiency

87

92

%

Nominal input; full load; 25°C

Ripple and noise

160

200

mV

p-p; Nominal input; full load; 20 MHz bandwith

Output OVP setpoint

14.0

14.85

Volts

25°C; recycle input voltage to restart (1 minute off)

Dissipation, standby

5.5

7.6

Watts

No load

Load regulation

±0.6

±1.5

%

No load to full load; nominal input, deviation from setpoint

Output capacitance

750

µF

External

Load current

0

18.33

Amps

Current limit (peak)

19.80

21.08

23.83

Amps

Shut down, may require PC enable to initiate restart

Short circuit current (avg)

0

1.0

9.17

Amps

Shut down, may require PC enable to initiate restart

12 Vout, 220 W OPERATING SPECIFICATIONS - (e.g. DC048B120T022FP)

Power Dissipation vs. Output Current

Output Current (A)

36 V

48 V

75 V

Vin

4

6

8

10

12

14

16

18

20

22

24

0

5

10

15

20

Efficiency vs. Output Current

Output Current (A)

36 V

48 V

75 V

Vin

65

70

75

80

85

90

95

0

1.83 3.66

5.49

7.32 9.15 10.98 12.81 14.64 16.47 18.3

NL

Vin

Ripple vs. Output Current

Output Current (A)

0

20

40

60

80

100

120

140

160

180

200

0

5

10

15

20

Figure 10-4 – Transient response 100 – 50%, 3 x 4.7 µF ceramic bypass

capacitance

Figure 10-1 – Efficiency vs. load

Figure 10-5 – Transient response 50 – 100%, 3 x 4.7 µF ceramic bypass

capacitance

Figure 10-2 – Power dissipation vs. load

Figure 10-3 – Output ripple vs. load with no external bypass capacitance

Figure 10-6 – Output voltage ripple at nominal line and full load with no

external bypass capacitance.