B048F480T30_11 Datasheet, PDF (3/12 Pages) Vicor Corporation – Bus Converter

Specifications (continued)
Output (Conditions are at 48 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 set point
Output ripple voltage
No external bypass
9.4 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
Min
38.0
36.7
0
0
95.7
95.4
55.0
6.4
3.2
0.9900
Typ
5
96.7
96.4
1.6
6
180
20
0.095
3.3
1
188.0
1.2
200
1
0
0
295
67
Max
55.0
53.8
300
8.2
450
10
100
320
3.5
1.0100
210.0
Unit
Vdc
Vdc
W
Adc
W
%
%
%
nH
µF
µF
Vdc
mVp-p
mVp-p
Adc
A
MHz
mΩ
V
ns
µs
mV
mV
ms
ms
Note
No load
Full load
38.0 - 55 V_IN
P_OUT ≤ 300 W
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
See Parallel Operation on Page 10
See Figure 5
See Figure 5
Effective value
Module will shut down
See Figures 7 and 9
See Figure 8
Module will shut down
Fixed, 1.7 MHz per phase
V_OUT = K•V_IN at no load
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
Output Waveforms
Efficiency vs. Output Power
98
96
94
92
90
88
86
0 30 60 90 120 150 180 210 240 270 300
Output Power (W)
Figure 5 — Efficiency vs. output power
vicorpower.com 800-735-6200
Power Dissipation
12
10
8
6
4
2
0 30 60 90 120 150 180 210 240 270 300
Output Power (W)
Figure 6 — Power dissipation as a function of output power
BCM™ Bus Converter
B048F480T30
Rev. 3.4
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