SPECIFICATIONS (CONT.)
(Conditions are at 48 Vin, full load, and 25°C ambient unless otherwise specified)
Output Specifications
Parameter
Min
1.19
1.08
0
Typ
Max
1.71
1.61
90
Unit
Vdc
Vdc
Adc
Note
No load
Full load
Output voltage
Rated DC current
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
Peak repetitive power
203
10
W
%
Current share accuracy
Efficiency
5
See Parallel Operation on Page 8
Half load
89.5
89.5
91.0
90.8
1.6
%
%
See Figure 5
See Figure 5
Full load
Internal output inductance
Internal output capacitance
Load capacitance
Output overvoltage setpoint
Output ripple voltage
No external bypass
94 µF bypass capacitor
Short circuit protection set point
Average short circuit current
Effective switching frequency
Line regulation
nH
µF
306
Effective value
64,400
200
µF
1.7
Vdc
100
14
mVp-p
mVp-p
Adc
See Figures 7 and 9
See Figure 8
100
2.8
Module will shut down
13.5
2.9
A
3.0
0.0316
1.3
MHz
Fixed, 1.5 MHz per phase
VOUT = K•VIN at no load
K
0.0309
1/32
Load regulation
ROUT
0.9
mΩ
Transient response
Voltage overshoot
Response time
60
200
1
mV
ns
100% load step; See Figures 10 and 11
See Figures 10 and 11
Recovery time
µs
See Figures 10 and 11
Output overshoot
Input turn-on
0
0
mV
mV
No output filter; See Figure 3
No output filter; See Figure 2
PC enable
Output turn-on delay
From application of power
From release of PC pin
88
35
ms
ms
No output filter; See Figure 3
No output filter
OUTPUT WAVEFORMS
Efficiency vs. Output Power
Power Dissipation
95
90
85
80
75
70
16
14
12
10
8
6
4
0
15
30
45
60
75
90
105 120 135
0
15
30
45
60
75
90
105 120 135
Output Power (W)
Output Power (W)
Figure 5 — Efficiency vs. output power
Figure 6 — Power dissipation as a function of output power
Bus Converter Module
BC048A015T014FP
vicorpower.com
Rev. 1.0
Page 4 of 11
VICOR [ VICOR CORPORATION ]
