Specifications, continued
OUTPUT
(Conditions are at 48 Vin, full load, and 25°C ambient unless otherwise specified)
Parameter
Rated DC current
Peak repetitive current
DC current limit
Current share accuracy
Efficiency
10A load
Full load
Internal output inductance
Internal output capacitance
Load capacitance
Output overvoltage setpoint
Output ripple voltage
No external bypass
1µF bypass capacitor
Average short circuit current
Effective switching frequency
Line regulation
K
Load regulation
R
OUT
Transient response
Voltage overshoot
Response time
Recovery time
Output overshoot
Input turn-on
PC enable
Output turn-on delay
From application of power
From release of PC pin
17.0
21.0
5
96.2
95.7
1.6
12
1000
14.75
95
12
200
3.5
0.250
150
Min
0
Typ
Max
17.0
25.0
26.0
10
Unit
Adc
A
Adc
%
%
%
nH
µF
µF
Vdc
mV
mV
mA
MHz
Note
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
See Parallel Operation on page 12
See Fig.5
See Fig.5
Effective value
95.5
95.0
See Figs.7 and 9
See Fig.8
Fixed, 1.75 MHz per phase
V
OUT
=K•V
IN
at no load
2.8
0.245
4.2
0.255
25
mΩ
mV
mV
ns
µs
mV
mV
See Fig. 26
0-17.0A load step, see Fig.10
1.2-15A load step with 1µF bypass, see Fig. 11
See Figs.10 and 11
See Figs.10 and 11
No output filter; See Fig.3
No output filter; See Fig.2
No output filter; See Fig.3
No output filter; See Fig.2
230
40
200
1
0
0
250
50
ms
ms
OUTPUT WAVEFORMS
Efficiency vs. Output Power
97
96
95
10
9
Power Dissipation
Power Dissipation (W)
0
25
50
75
100
125
150
175
200
8
7
6
5
4
3
2
1
0
0
25
50
75
100
125
150
175
200
Efficiency (%)
94
93
92
91
90
89
Output Power (W)
Output Power (W)
Figure 5—
Efficiency vs. output power at 12 Vout
Figure 6—Power
dissipation as a function of output power
45
Vicor Corporation
Tel: 800-735-6200
vicorpower.com
V•I Chip Bus Converter
B048K120T20
Rev. 2.2
Page 3 of 16
VICOR [ VICOR CORPORATION ]
