B048K120T20 Datasheet, PDF (3/16 Pages) Vicor Corporation – VI Chip - BCM Bus Converter Module

Specifications, continued
OUTPUT (Conditions are at 48 Vin, full load, and 25°C ambient unless otherwise specified)
Parameter
Rated DC current
Peak repetitive current
DC current limit
Current share accuracy
Efficiency
10A load
Full load
Internal output inductance
Internal output capacitance
Load capacitance
Output overvoltage setpoint
Output ripple voltage
No external bypass
1µF bypass capacitor
Average short circuit current
Effective switching frequency
Line regulation
K
Load regulation
ROUT
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
Min
Typ
Max
Unit
0
17.0
Adc
25.0
A
17.0
21.0
26.0
Adc
5
10
%
95.5
96.2
%
95.0
95.7
%
1.6
nH
12
µF
1000
µF
14.75
Vdc
95
150
mV
12
mV
200
mA
2.8
3.5
4.2
MHz
0.245
0.250
0.255
25
mΩ
230
mV
40
mV
200
ns
1
µs
0
mV
0
mV
250
ms
50
ms
Note
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
See Parallel Operation on page 12
See Fig.5
See Fig.5
Effective value
See Figs.7 and 9
See Fig.8
Fixed, 1.75 MHz per phase
VOUT=K•VIN at no load
See Fig. 26
0-17.0A load step, see Fig.10
1.2-15A load step with 1µF bypass, see Fig. 11
See Figs.10 and 11
See Figs.10 and 11
No output filter; See Fig.3
No output filter; See Fig.2
No output filter; See Fig.3
No output filter; See Fig.2
OUTPUT WAVEFORMS
Efficiency vs. Output Power
97
96
95
94
93
92
91
90
89
0
25
50
75
100 125 150
175 200
Output Power (W)
Figure 5— Efficiency vs. output power at 12 Vout
Power Dissipation
10
9
8
7
6
5
4
3
2
1
0
0
25
50
75
100 125 150
175 200
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
B048K120T20
Rev. 2.2
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