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Not Recommended for New Designs - Replaced by VTM48Ex320y009A00
Specifications
Input Specs (Conditions are at 48 V IN , full load, and 25°C ambient unless otherwise specified)
V048F320T009
Parameter
Input voltage range
Min
26
Typ
48
Max
55
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
55.0
1
59.2
6.8
V/μs
Vdc
Vdc
Adc
Input reflected ripple current
310
mA p-p
Using test circuit in Figure 15; See Figure 1
No load power dissipation
3.9
5.2
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
17.3
16.4
0
Typ
Max
36.7
35.9
9.4
Unit
Vdc
Vdc
Adc
Note
No load
Full load
26 - 55 V IN
Peak repetitive current
Short circuit protection set point
10
14.1
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
95.2
95.0
96.5
96.2
1.1
%
%
nH
See Figure 3
See Figure 3
Internal output capacitance
Output overvoltage set point
36.7
12
μF
Vdc
Effective value
Module will shut down
Output ripple voltage
No external bypass
4.7 μF bypass capacitor
175
14
335
mVp-p
mVp-p
See Figures 2 and 5
See Figure 6
Effective switching frequency
2.4
2.8
3.2
MHz
Fixed, 1.4 MHz per phase
Line regulation
K
0.6600
2/3
0.6733
V OUT = K?V IN at no load
Load regulation
R OUT
79.0
98.0
m Ω
See Figure 16
Transient response
Voltage overshoot
Response time
Recovery time
540
200
1
mV
ns
μs
9.4 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 2.8
01/2014
vicorpower.com
800 927.9474
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