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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
Min
11.3
10.8
0
0
Typ
5
Max
12.5
12.0
300
27.7
450
10
Unit
Vdc
Vdc
W
Adc
W
%
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
Efficiency
Half load
Full load
Internal output inductance
Internal output capacitance
94.1
94.2
95.2
95.3
1.1
31
%
%
nH
μF
See Figure 5
See Figure 5
Effective value
Load capacitance
Output overvoltage setpoint
Output ripple voltage
12.5
1,000
μF
Vdc
No external bypass
10 μF bypass capacitor
Short circuit protection set point
Average short circuit current
28.2
197
23
0.23
400
mV p-p
mV p-p
Adc
A
See Figures 7 and 9
See Figure 8
Module will shut down
Effective switching frequency
3.3
3.4
3.5
MHz
Fixed, 1.7 MHz per phase
Line regulation
K
0.0309
1/32
0.0316
VOUT = K?V IN at no load
Load regulation
R OUT
15.0
20.0
m ?
Transient response
Voltage overshoot
Response time
Recovery time
74
200
1
mV
ns
μs
100% load step; See Figures 10 and 11
See Figures 10 and 11
See Figures 10 and 11
Output overshoot
Input turn-on
PC enable
0
0
mV
mV
No output filter; See Figure 3
No output filter; See Figure 2
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
96
94
92
Efficiency vs. Output Power
16
14
12
Power Dissipation
90
10
88
86
84
82
8
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)
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
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