Electrical Specifications
(continued)
Auxiliary Pins
(Conditions are at 48 Vin, 48 Vf, full load, and 25°C ambient unless otherwise specified)
Parameter
VC (VTM Control)
Pulse width
Peak voltage
PC (Primary Control)
DC voltage
Module disable voltage
Module enable voltage
Disable hysteresis
Current limit
Enable delay time
Disable delay time
IL (Current Limit Adjust)
Voltage
Accuracy
PR (Parallel Port)
Voltage
Source current
External capacitance
VH (Auxiliary Voltage)
Range
Regulation
Current
SC (Secondary Control)
Voltage
Internal capacitance
External capacitance
OS (Output Set)
Set point accuracy
Reference offset
CD (Compensation Device)
External resistance
Min
8
12
4.8
2.3
Typ
12
14
5.0
2.4
2.5
100
1.75
100
1
1
± 15
0.6
1
7.5
100
8.7
9.0
0.04
9.3
5
1.23
1.24
0.22
1.25
0.7
± 1.5
±4
20
Max
18
18
5.2
2.6
Unit
ms
V
Vdc
Vdc
Vdc
mV
mA
µs
µs
V
%
V
mA
pF
Vdc
%/mA
mA p
Vdc
µF
µF
%
mV
Ω
Note
V•I Chip Pre-Regulator Module
Referenced to –Out
Referenced to –In
Referenced to –In
1.90
Source only after start up; not to be used for
aux. supply; 100 kΩ minimum load
impedance to assure start up
Based on DC current limit set point
Referenced to SG; See description Page 8
Typical internal bypass C= 0.1 µF
Maximum external C=0.1 µF, referenced to SG
Referenced to SG
Includes 1% external resistor
Omit resistor for regulation at output of PRM
General Specs
Parameter
MTBF
MIL-HDBK-217F
Agency approvals
Mechanical parameters
Weight
Dimensions
Length
Width
Height
Thermal
Over temperature shutdown
Thermal capacity
Junction-to-case thermal impedance (R
θJC
)
Junction-to-board thermal impedance (R
θJB
)
Case-to-ambient
130
Min
Typ
2.2
cTÜVus
CE Mark
RoHS
0.53/15
1.28/32,5
0.87/22,0
0.265/6,73
135
9.3
1.1
2.1
3.7
140
Max
Unit
Mhrs
Note
25°C, GB
UL/CSA 60950-1, EN60950-1
Low voltage directive
Complies with RoHS
See Mechanical Drawings, Figures 19 – 22
oz / g
in /mm
in /mm
in /mm
°C
Ws/°C
°C/W
°C/W
°C/W
Junction temperature
With 0.25” heat sink @ 300 LFM
vicorpower.com
800-735-6200
V•I Chip Pre-Regulator Module
P048F048T24AL
Rev. 3.4
Page 7 of 14
VICOR [ VICOR CORPORATION ]
