B048K120T15 Datasheet, PDF (3/16 Pages) Vicor Corporation – VI Chip - BCM Bus Converter Module

Specifications, continued
OUTPUT (Conditions are at nominal line, full load, and 25°C ambient unless otherwise specified)
Parameter
Min
Typ
Max
Unit
Note
Rated DC current
0
12.5
A
Peak repetitive current
18.7
A
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
DC current limit
12.5
16.0
20.0
A
Current share accuracy
5
10
%
See Parallel Operation on page 11
Efficiency
Half load
95.0
95.8
%
See Fig.5
Full load
95.0
96.0
%
See Fig.5
Internal output inductance
1.6
nH
Internal output capacitance
12
µF
Effective value
Load capacitance
1000
µF
Output overvoltage setpoint
14.75
V
P R E L I M I N A RY Outputripplevoltage
No external bypass
1µF bypass capacitor
Average short circuit current
Effective switching frequency
Line regulation
K
Load regulation
ROUT
Transient response
Voltage undershoot
Voltage overshoot
Response time
Recovery time
Output overshoot
90
150
mV
8
mV
200
mA
2.8
3.5
4.2
MHz
0.245
0.250
0.255
32
mΩ
148
mV
144
mV
200
ns
1
µs
See Figs.7 and 10
See Fig.8
Fixed, 1.75 MHz per phase
VOUT=K•VIN at no load
See Figs.9 and 28
0-12.5A load step, w/Cin = 100µF, see Fig.11
12.5-0A load step, w/Cin =100µF, see Fig.12
See Figs.11 and 12
See Figs.11 and 12
Input turn-on
0
mV
No output filter; See Fig.2
PC enable
0
mV
No output filter; See Fig.3
Output turn-on delay
From application of power
160
300
ms
See Fig.3
From release of PC pin
320
410
µs
See Fig.2
OUTPUT WAVEFORMS
Efficiency vs. Output Power
97
96
95
94
93
92
91
90
89
88
0
20
40
60
80
100
120
140
Output Power (W)
Figure 5— Efficiency vs. output power at nominal VIN
Power Dissipation
7
6
5
4
3
2
1
0
0
20
40
60
80
100
120
140
Output Power (W)
Figure 6—Power dissipation as a function of output power
45 Vicor Corporation
Tel: [phone]
vicorpower.com
V•I Chip Bus Converter
B048K120T15
Rev. 1.2
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