PRELIMINARY
V048F040T050
VTM
TM
V•I Chip – VTM
Voltage Transformation Module
• 48 V to 4 V V•I Chip Converter
• 125°C operation
• 50 A (75 A for 1 ms)
• 1 µs transient response
• 3.5 million hours MTBF
• Typical efficiency 94%
• No output filtering required
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• High density – 182 A/in3
• Small footprint – 45 A/in2
• Low weight – 0.5 oz (14 g)
• Pick & Place / SMD
Vf = 26 - 55 V
VOUT = 2.17 - 4.58 V
IOUT = 50 A
Actual size
K = 1/12
ROUT = 3.9 mΩ max
Product Description
Absolute Maximum Ratings
Parameter
Values
-1.0 to 60
100
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
A
Notes
The V048F040T050 V•I Chip Voltage Transformation
Module (VTM) excels at speed, density and efficiency to
meet the demands of advanced power applications
while providing isolation from input to output. It
achieves a response time of less than 1 µs and delivers
up to 50 A in a volume of less than 0.274 in3 with
unprecedented efficiency. It may be paralleled to deliver
higher power levels at an output voltage settable from
2.17 to 4.58 Vdc.
+In to -In
+In to -In
For 100 ms
PC to -In
-0.3 to 7.0
-0.3 to 19.0
-0.5 to 12
2,250
VC to -In
+Out to -Out
Isolation voltage
Output current
Peak output current
Output power
Peak output power
Case temperature
Input to Output
Continuous
For 1 ms
50
75
A
The VTM V048F040T050’s nominal output voltage is 4
Vdc from a 48 Vdc input Factorized Bus, Vf, and is
controllable from 2.17 to 4.58 Vdc at no load, and from
1.98 to 4.40 Vdc at full load, over a Vf input range of 26
to 55 Vdc. It can be operated either open- or closed-loop
depending on the output regulation needs of the
application. Operating open-loop, the output voltage
tracks its Vf input voltage with a transformation ratio,
K = 1/12, for applications requiring an isolated output
voltage with high efficiency. Closing the loop back to an
input Pre-Regulation Module (PRM) or DC-DC converter
enables tight load regulation.
220
W
Continuous
For 1 ms
330
W
208
°C
During reflow
-40 to 125
°C
°C
T - Grade
M - Grade
Operating junction temperature(1)
Storage temperature
-55 to 125
-40 to 150
-65 to 150
°C
°C
T - Grade
M - Grade
Note:
(1) The referenced junction is defined as the semiconductor having the highest temperature.
This temperature is monitored by a shutdown comparator.
The 4 V VTM achieves a current density of 182 A/in3 in
a V•I Chip package compatible with standard pick-and-
place and surface mount assembly processes. The VTM’s
fast dynamic response and low noise eliminate the
need for bulk capacitance at the load, substantially
increasing system density while improving reliability
and decreasing cost.
Part Numbering
V
048
F
040 T
050
Voltage
Transformation
Module
Output Voltage
Designator
(=VOUT x10)
Output Current
Designator
(=IOUT)
Input Voltage
Designator
Configuration Options
Product Grade Temperatures (°C)
Grade
T
M
Storage Operating
-40 to150 -40 to125
-65 to150 -55 to125
F
= On-board (Figure 10)
vicorpower.com
800-735-6200
V•I Chip Voltage Transformation Module
V048F040T050
Rev. 1.1
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