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
19.0
18.3
0
Typ
Max
26.5
25.8
300
Unit
Vdc
Vdc
W
Note
No load
Output voltage
Full load
42 - 53 VIN
38 - 53 VIN
Output power
0
269
W
Rated DC current
0
14.8
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
95.0
94.7
95.7
95.8
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
3.3 µF bypass capacitor
Short circuit protection set point
Average short circuit current
Effective switching frequency
Line regulation
nH
µF
7.7
Effective value
300
348
µF
26.5
Vdc
Module will shut down
150
13
mVp-p
mVp-p
Adc
See Figures 7 and 9
See Figure 8
15.1
3.0
Module will shut down
0.62
3.4
A
3.8
0.5050
60.0
MHz
Fixed, 1.7 MHz per phase
VOUT = K•VIN at no load
K
0.4950
1/2
Load regulation
ROUT
43.6
mΩ
Transient response
Voltage overshoot
Response time
600
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
260
65
ms
ms
No output filter; See Figure 3
No output filter
Output Waveforms
Power Dissipation
Efficiency vs. Output Power
14
12
10
8
98
96
94
92
90
88
6
4
2
0
30
60
90 120 150 180 210 240 270 300
30
0
60
90
120
150
180
210
240
270
300
Output Power (W)
Output Power (W)
Figure 5 — Efficiency vs. output power
vicorpower.com
Figure 6 — Power dissipation as a function of output power
V•I Chip Bus Converter Module B048F240T30
800-735-6200
Rev. 2.3
Page 3 of 12
VICOR [ VICOR CORPORATION ]
