V•I Chip Bus Converter Module
Specifications (continued)
Output (Conditions are at 48 Vin, full load, and 25°C ambient unless otherwise specified)
Parameter
Min
25.3
24.4
0
Typ
Max
36.7
35.9
300
Unit
Vdc
Vdc
W
Note
No load
Output voltage
Full load
41 - 55 VIN
38 - 55 VIN
Output power
0
274
W
Rated DC current
0
11.3
Adc
POUT ≤ 300 W
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
Peak repetitive power
450
10
W
%
Current share accuracy
Efficiency
5
See Parallel Operation on Page 10
Half load
95.2
95.0
96.5
96.2
1.1
%
%
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
4.7 µF bypass capacitor
Short circuit protection set point
Average short circuit current
Effective switching frequency
Line regulation
nH
µF
12
Effective value
100
335
µF
36.7
Vdc
Module will shut down
175
14
mVp-p
mVp-p
Adc
See Figures 7 and 9
See Figure 8
11.5
2.4
Module will shut down
0.18
2.8
A
3.2
0.6733
98.0
MHz
Fixed, 1.4 MHz per phase
VOUT = K•VIN at no load
K
0.6600
2/3
Load regulation
ROUT
79.0
mΩ
Transient response
Voltage overshoot
Response time
540
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
255
68
ms
ms
No output filter; See Figure 3
No output filter
Output Waveforms
Efficiency vs. Output Power
Power Dissipation
98
96
94
92
90
88
12
10
8
6
4
2
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
vicorpower.com
Output Power (W)
Figure 6 — Power dissipation as a function of output power
V•I Chip Bus Converter Module B048F320T30
800-735-6200
Rev. 2.5
Page 3 of 12
VICOR [ VICOR CORPORATION ]
