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
4.7 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
95.2
95.0
96.5
96.2
1.1
12
100
36.7
175
14
11.5
2.4
0.6600
0.18
2.8
2/3
79.0
540
200
1
0
0
255
68
3.2
0.6733
98.0
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 Figure 3
No output filter; See Figure 2
No output filter; See Figure 3
No output filter
335
Min
25.3
24.4
0
0
0
Typ
Max
36.7
35.9
300
274
11.3
450
10
Unit
Vdc
Vdc
W
W
Adc
W
%
%
%
nH
µF
µF
Vdc
mVp-p
mVp-p
Adc
A
MHz
Note
No load
Full load
41 - 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 10
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, 1.4 MHz per phase
V
OUT
= K•V
IN
at no load
Output Waveforms
Efficiency vs. Output Power
98
12
10
8
6
4
2
0
30
60
90
120
150
180
210
240
270
300
0
30
60
90
120
150
180
210
240
270
300
96
Power Dissipation
94
92
90
88
Output Power (W)
Figure 5
— Efficiency vs. output power
Power Dissipation (W)
Efficiency (%)
Output Power (W)
Figure 6
— Power dissipation as a function of output power
vicorpower.com
800-735-6200
V•I Chip Bus Converter Module
B048F320T30
Rev. 2.5
Page 3 of 12
VICOR [ VICOR CORPORATION ]
