Specifications, continued
OUTPUT
(Conditions are at nominal line, full load, and 25°C ambient unless otherwise specified)
Parameter
Rated DC current
Peak repetitive current
DC current limit
Current share accuracy
Efficiency
Half 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 undershoot
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
12.5
16.0
5
95.8
96.0
1.6
12
1000
14.75
90
8
200
3.5
150
Min
0
Typ
Max
12.5
18.7
20.0
10
Unit
A
A
A
%
%
%
nH
µF
µF
V
mV
mV
mA
MHz
Note
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
See Parallel Operation on page 11
See Fig.5
See Fig.5
Effective value
95.0
95.0
See Figs.7 and 10
See Fig.8
2.8
0.245
P
L
E
R
Efficiency vs. Output Power
IN
IM
4.2
0.250
0.255
32
mΩ
mV
mV
ns
µs
148
144
200
1
0
0
160
320
300
410
mV
mV
ms
µs
Fixed, 1.75 MHz per phase
V
OUT
=K•V
IN
at no load
See Figs.9 and 28
Y
R
A
0-12.5A load step, w/Cin = 100µF, see Fig.11
12.5-0A load step, w/Cin =100µF, see Fig.12
See Figs.11 and 12
See Figs.11 and 12
No output filter; See Fig.2
No output filter; See Fig.3
See Fig.3
See Fig.2
OUTPUT WAVEFORMS
Power Dissipation
7
97
96
6
Power Dissipation (W)
0
20
40
60
80
100
120
140
95
Efficiency (%)
5
94
93
92
91
90
89
88
4
3
2
1
0
0
20
40
60
80
100
120
140
Output Power (W)
Output Power (W)
Figure 5—
Efficiency vs. output power at nominal V
IN
Figure 6—Power
dissipation as a function of output power
45
Vicor Corporation
Tel: 800-735-6200
vicorpower.com
V•I Chip Bus Converter
B048K120T15
Rev. 1.2
Page 3 of 16
VICOR [ VICOR CORPORATION ]
