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Not Recommended for New Designs - Replaced by VTM48Ex480y006A00
Specifications
Input Specs (Conditions are at 48 V IN , full load, and 25°C ambient unless otherwise specified)
V048F480T006
Parameter
Input voltage range
Min
26.0
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
60.0
6.8
V/μs
Vdc
Vdc
Adc
Input reflected ripple current
143
mA p-p
Using test circuit in Figure 15; See Figure 1
No load power dissipation
3.5
5.3
W
Internal input capacitance
Internal input inductance
4.0
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
26.0
24.7
0
Typ
Max
55.0
53.8
6.3
Unit
Vdc
Vdc
Adc
Note
No load
Full load
26.0 - 55 V IN
Peak repetitive current
Short circuit protection set point
6
9.4
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
95.7
95.4
96.7
96.4
1.6
%
%
nH
See Figure 3
See Figure 3
Internal output capacitance
Output overvoltage set point
55.0
6
μF
Vdc
Effective value
Module will shut down
Output ripple voltage
No external bypass
9.4 μF bypass capacitor
180
20
320
mVp-p
mVp-p
See Figures 2 and 5
See Figure 6
Effective switching frequency
3.2
3.3
3.5
MHz
Fixed, 1.7 MHz per phase
Line regulation
K
0.9900
1
1.0100
V OUT = K?V IN at no load
Load regulation
R OUT
188.0
210.0
m Ω
See Figure 16
Transient response
Voltage overshoot
Response time
Recovery time
1.2
200
1
V
ns
μs
6.3 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 3.1
01/2014
vicorpower.com
800 927.9474
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