PRELIMINARY
Specifications
(continued)
V•I Chip Bus Converter Module
Output
(Conditions are at 48 Vin, full load, and 25°C ambient unless otherwise specified)
Parameter
Output voltage
Output power
Rated DC current
Peak repetitive power
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
10 µF bypass capacitor
Short circuit protection set point
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
5
96.5
96.0
96.7
96.4
1.6
6.0
100
55.0
179
20
7.2
94.5
3.0
1
188.0
1170
200
1
0
0
295
67
240
9.0
1.4
1.0100
200.0
mΩ
mV
ns
µs
mV
mV
ms
ms
100% load step; See Figures 10 and 11
See Figures 10 and 11
See Figures 10 and 11
No output filter; See Fig.3
No output filter; See Fig.2
No output filter; See Fig.3
No output filter
Min
38.0
36.8
0
0
0
Typ
Max
55.0
53.9
300
230
6.25
450
10
Unit
Vdc
Vdc
W
W
Adc
W
%
%
%
nH
µF
µF
Vdc
mV
mV
Adc
A
MHz
Note
No load
Full load
49 - 55 V
IN
38 - 55 V
IN
P
OUT
≤
300 W
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
See Parallel Operation on Page 12
See Figure 5
See Figure 5
Effective value
Module will shut down
See Figures 7 and 9
See Figure 8
Module will shut down
Fixed, 1.5 MHz per phase
V
OUT
= K•V
IN
at no load
6.4
1.6
0.9900
Output Waveforms
Efficiency vs. Output Power
100
96
12
Power Dissipation
Power Dissipation (W)
11
10
9
8
7
6
5
4
3
2
98
Efficiency (%)
94
92
90
88
86
84
82
80
0
30
60
90
120
150
180
210
240
270
300
0
30
60
90
120
150
180
210
240
270
300
Output Power (W)
Figure 5—
Efficiency vs. output power at 48 Vin
Output Power (W)
Figure 6—Power
dissipation as a function of output power
vicorpower.com
800-735-6200
V•I Chip Bus Converter Module
B048K480T30
Rev. 1.5
Page 3 of 15
VICOR [ VICOR CORPORATION ]
