
Not Recommended for New Designs - Replaced by VTM48Ex240y012A00
Specifications
Input Specs (Conditions are at 48 V IN , full load, and 25°C ambient unless otherwise specified)
V048F240T012
Parameter
Input voltage range
Min
28
Typ
48
Max
53
Unit
Vdc
Note
Max Vin = 53 V, operating from -55°C to -40°C
Input dV/dt
Input overvoltage turn on
Input overvoltage turn off
Input current
53.0
1
59.0
6.8
V/μs
Vdc
Vdc
Adc
Input reflected ripple current
120
mA p-p
Using test circuit in Figure 15; See Figure 1
No load power dissipation
4.0
5.9
W
Internal input capacitance
Internal input inductance
1.9
5
μF
nH
Output Specs (Conditions are at 48 V IN , full load, and 25°C ambient unless otherwise specified)
Parameter
Output voltage
Rated DC current
Min
13.8
13.0
0
Typ
Max
26.5
25.8
12.5
Unit
Vdc
Vdc
Adc
Note
No load
Full load
28 - 53 V IN
Peak repetitive current
Short circuit protection set point
12.8
18.8
A
Adc
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
Module will shut down
Current share accuracy
5
10
%
See Parallel Operation on Page 9
Efficiency
Half load
Full load
Internal output inductance
95.0
94.7
95.7
95.8
1.1
%
%
nH
See Figure 3
See Figure 3
Internal output capacitance
Output overvoltage set point
26.5
7.7
μF
Vdc
Effective value
Module will shut down
Output ripple voltage
No external bypass
3.3 μF bypass capacitor
150
13
348
mVp-p
mVp-p
See Figures 2 and 5
See Figure 6
Effective switching frequency
3.0
3.4
3.8
MHz
Fixed, 1.7 MHz per phase
Line regulation
K
0.4950
1/2
0.5050
V OUT = K?V IN at no load
Load regulation
R OUT
43.6
60.0
m Ω
See Figure 16
Transient response
Voltage overshoot
Response time
Recovery time
600
200
1
mV
ns
μs
12.5 A load step with 100 μF C IN ; See Figures 7 and 8
See Figures 7 and 8
See Figures 7 and 8
VTM ? Current Multiplier
Page 2 of 11
Rev 2.9
01/2014
vicorpower.com
800 927.9474