Specifications (continued)
V•I Chip Bus Converter Module
Output (Conditions are at 384 Vin, full load, and 25°C ambient unless otherwise specified)
Parameter
Min
11.3
10.8
0
Typ
Max
12.5
12.0
300
Unit
Vdc
Vdc
W
Note
No load
Output voltage
Full load
364 - 400 VIN
Output power
Rated DC current
0
27.7
Adc
POUT≤300 W
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
Peak repetitive power
450
10
W
%
Current share accuracy
Efficiency
5
See Parallel Operation on Page 11
Half load
94.1
94.2
95.2
95.3
1.1
%
%
See Figure 5
See Figure 5
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
nH
µF
31
Effective value
1,000
400
µF
12.5
Vdc
197
23
mV p-p
mV p-p
Adc
See Figures 7 and 9
See Figure 8
28.2
3.3
Module will shut down
0.23
3.4
A
3.5
0.0316
20.0
MHz
Fixed, 1.7 MHz per phase
VOUT = K•VIN at no load
K
0.0309
1/32
15.0
Load regulation
ROUT
mΩ
Transient response
Voltage overshoot
Response time
74
200
1
mV
ns
100% load step; See Figures 10 and 11
See Figures 10 and 11
Recovery time
µs
See Figures 10 and 11
Output overshoot
Input turn-on
0
0
mV
mV
No output filter; See Figure 3
No output filter; See Figure 2
PC enable
Output turn-on delay
From application of power
From release of PC pin
1180
240
ms
ms
No output filter; See Figure 3
No output filter
Output Waveforms
Power Dissipation
Efficiency vs. Output Power
16
14
12
10
8
96
94
92
90
88
86
84
82
6
4
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)
Output Power (W)
Figure 5 — Efficiency vs. output power at 384 Vin
Figure 6 — Power dissipation as a function of output power
V•I Chip Bus Converter Module B384F120T30
vicorpower.com
800-735-6200
Rev. 2.1
Page 3 of 12
VICOR [ VICOR CORPORATION ]
