Specifications
(continued)
Output
(Conditions are at 384 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
28.2
3.3
0.0309
0.23
3.4
1/32
15.0
74
200
1
0
0
1180
240
3.5
0.0316
20.0
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
94.1
94.2
5
95.2
95.3
1.1
31
1,000
12.5
197
23
400
Min
11.3
10.8
0
0
Typ
Max
12.5
12.0
300
27.7
450
10
Unit
Vdc
Vdc
W
Adc
W
%
%
%
nH
µF
µF
Vdc
mV p-p
mV p-p
Adc
A
MHz
Note
No load
Full load
364 - 400 V
IN
P
OUT
≤300
W
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
See Parallel Operation on Page 11
See Figure 5
See Figure 5
Effective value
See Figures 7 and 9
See Figure 8
Module will shut down
Fixed, 1.7 MHz per phase
VOUT = K•V
IN
at no load
Output Waveforms
Efficiency vs. Output Power
96
94
16
14
12
10
8
6
4
Power Dissipation
Efficiency (%)
92
90
88
86
84
82
0
30
60
90
120
150
180
210
240
270
300
Power Dissipation (W)
0
30
60
90
120
150
180
210
240
270
300
Output Power (W)
Figure 5
— Efficiency vs. output power at 384 Vin
Output Power (W)
Figure 6
— Power dissipation as a function of output power
vicorpower.com
800-735-6200
V•I Chip Bus Converter
B384F120T30
Rev. 2.4
Page 3 of 12
VICOR [ VICOR CORPORATION ]
