PRELIMINARY
ELECTRICAL CHARACTERISTICS
For comprehensive data on any of the configurations, please refer to the data sheet for the BCM with output voltage (K Factor) of
the Intermediate Bus Converter of interest. Data sheets are available from our website at www.vicorpower.com.
Electrical characteristics apply over the full operating range of input voltage, output load (resistive) and case temperature,
unless otherwise specified.
INPUT SPECIFICATIONS
Parameter
Min
Typ
Max
55
Unit
Vdc
Vdc
Notes
Operating input voltage
Input surge withstand
38
48
12 V 200 W & 400 W units are 42–53 Vdc
<100ms
100
Undervoltage
Turn-on
Turn-off
36.1
33.8
38
Vdc
Vdc
32.6
55.0
Overvoltage
Turn-off
Turn-on
Vdc
Vdc
59
10
Input reflected ripple current
Input dV/dt
3
% Iin
V/µs
mA p-p with recommended external input capacitor
Turn-on time
Power up
PC enable
300
50
ms
µs
No load power dissipation
2.5
50
W
per BCM
Recommended external
input capacitance
10
µF
200 nH maximum source inductance
OUTPUT SPECIFICATIONS
Parameter
Min
Typ
Max
Unit
%
Notes
Output voltage accuracy
Peak repetitive output current
Current limit
±2
48 V input; no load; 25°C
<1 ms; see note 2 below
See note 1 below
150
%
125
200
96.0
120
%
Average short circuit current
Efficiency
mA
%
48 Vin; full load; 25°C
Output OVP setpoint
Line regulation
%
Fixed ratio; Vout = Vin•K (see product matrix)
Load regulation
∆Vout = ∆Iout•Rout (see product matrix)
Temperature regulation
Ripple and noise, p-p
Switching frequency
Power sharing accuracy
±0.05
100
3.5
% / °C
mV
48 Vin; full load; 20 MHz bandwidth
Fixed
MHz
%
±5
±10
10 to 100% load
Transient response
Voltage deviation
Response time
Recovery time
No load - full load step change, see note 2 below
2
200
1
%
ns
µs
Note 1: Current limit parameter does not apply for all models. Please see product matrix on page 2 for exceptions.
Note 2: For important information relative to applications where the unit is subjected to continuous dynamic loading, contact Vicor
applications engineering at 800-927-9474.
Vicor Corporation Tel: 800-735-6200 vicorpower.com
Quarter-Brick Intermediate Bus Converters
Rev. 1.3
Page 3 of 8
Factorized Power