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Vicor Corporation
Vicor Corporation


Voltage Transformation Module

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V048G015T80 pdf
V•I ChipTM – VTM
Voltage Transformation Module
• 48V to 1.5V V•I Chip Converter
• 80 A (120 A for 1 ms)
• High density – up to 320 A/in3
• Small footprint – 80 A/in2
• Low weight – 0.4 oz (12 g)
• Pick & Place / SMD
• >92% efficiency at 1.5V
• 125°C operation
• 1 µs transient response
• >3.5 million hours MTBF
• No output filtering required
• V•I Chip BGA package
Vf = 32 - 57.6 V
VOUT = 1.0 - 1.8 V
IOUT = 80 A
K = 1/32
ROUT = 1.5 mmax
Actual size
Product Description
Absolute Maximum Ratings
The V048K015T80 VI Chip Voltage Transformation
Module (VTM) breaks records for speed, density and
efficiency to meet the demands of advanced DSP,
FPGA, ASIC, processor cores and microprocessor
applications at the point of load (POL) while providing
+In to -In
+In to -In
-1.0 to 60.0
100 Vdc For 100 ms
isolation from input to output. It achieves a response
PC to -In
-0.3 to 7.0
time of less than 1 µs and delivers up to 80A in a
TM to -In
-0.3 to 7.0
volume of less than 0.25 in3 while converting 48 V to
1.5 V with unprecedented efficiency. It may be
paralleled to deliver hundreds of amps at an output
voltage settable from 1.0 to 1.8 Vdc.
P R E L I M I N A RYThe VTM V048K015T80’s nominal output voltage is
1.5 Vdc from a 48 Vdc input factorized bus, Vf, and is
controllable from 1.0 to 1.8 Vdc at no load, and from
0.9 V to 1.7 V at full load, over a Vf input range of 32 to
57.6 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=1/32, and an output resistance, ROUT =1.3 milliohm,
to enable applications requiring a programmable low
output voltage at high current and high efficiency.
SG to -In
+Out to -Out
Isolation voltage
Operating junction temperature
Output current
Peak output current
Case temperature during reflow
Storage temperature
Output power
Peak output power
Thermal Resistance
-0.5 to 5.0
-40 to 125
-40 to 150
Vdc Input to Output
°C See note 2
A Continuous
A For 1 ms
W Continuous
W For 1 ms
Closing the loop back to an input Pre-Regulation
Module (PRM) or DC-DC converter may be used to
Symbol Parameter
Typ Max Units
compensate for ROUT.
1.1 1.5 °C/W
The 1.5V VTM achieves break-through current density
of 320 A/in3 in a VI Chip package compatible with
standard pick-and-place and surface mount assembly
processes. The VI Chip BGA package supports in-board
mounting with a low profile of 0.16" (4mm) over the
board. A J-lead package option supports on-board
surface mounting with a profile of only 0.25" (6mm)
over the board. The VTM’s fast dynamic response and
low noise eliminate the need for bulk capacitance at the
load, substantially increasing the POL density while
improving reliability and decreasing cost.
Junction-to-ambient 3
Junction-to-ambient 4
2.1 2.5 °C/W
6.5 7.2 °C/W
5.0 5.5 °C/W
1. For complete product matrix, see chart on page 10.
2. The referenced junction is defined as the semiconductor having the highest temperature. This
temperature is monitored by the temperature monitor (TM) signal and by a shutdown comparator.
3. V048K015T80 surface mounted in-board to a 2" x 2" FR4 board, 4 layers 2 oz Cu, 300 LFM.
4. V048L015T80 (0.25"H integral Pin Fins) surface mounted on FR4 board, 300 LFM.
45 Vicor Corporation Tel: 800-735-6200
V•I Chip Voltage Transformation Module Rev. 1.6
Page 1 of 20

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V048G015T80 pdf
INPUT (Conditions are at nominal line, full load, and 25°C ambient unless otherwise specified)
Input voltage range
Input dV/dt
P R E L I M I N A RYInputundervoltageturn-on
Input undervoltage turn-off
Input overvoltage turn-on
Input overvoltage turn-off
Input quiescent current
Inrush current overshoot
Input current
Input reflected ripple current
No load power dissipation
Internal input capacitance
Internal input inductance
Min Typ Max Unit
32 48 57.6 V
10 V/µs
32 V
29.5 V
57.6 V
59.0 V
2.0 2.4 mA
PC low
0.7 A Using test circuit in Fig.24; See Fig.1
2.7 A
mA p-p
Using test circuit in Fig.24; See Fig.4
2.5 3.5
1 µF
20 nH
Recommended external input capacitance
µF 200 nH maximum source inductance; See Fig.24
Figure 1— Inrush transient current at no load and nominal VIN
with PC enabled
Figure 2— Output voltage turn-on waveform with PC enabled
at full load and nominal VIN
Figure 3—Output voltage turn-on waveform with input turn-on
at full load and nominal VIN
Figure 4— Input reflected ripple current at full load and
nominal VIN
45 Vicor Corporation Tel: 800-735-6200
V•I Chip Voltage Transformation Module Rev. 1.6
Page 2 of 20

Part Number V048G015T80
Description Voltage Transformation Module
Maker Vicor Corporation - Vicor Corporation
Total Page 20 Pages
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