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Vicor Corporation
Vicor Corporation


(V048x015T090) Voltage Transformation Module

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V048K015T090 pdf
V•I ChipTM – VTM
Voltage Transformation Module
K indicates BGA configuration. For other
mounting options see Part Numbering below.
• 48 V to 1.5 V V•I Chip Converter
• 90 A (135 A for 1 ms)
• High density – 360 A/in3
• 125°C operation
• 1 µs transient response
• >3.5 million hours MTBF
Vf = 26 - 55 V
VOUT = 0.8 - 1.7 V
IOUT = 90 A
K = 1/32
ROUT = 1.2 mmax
• Small footprint – 84 A/in2
• Typical efficiency 93% at 1.5 V/50 A
• Low weight – 0.5 oz (14 g)
• No output filtering required
• Pick & Place / SMD
• BGA or J-Lead packages
Actual size
Product Description
Absolute Maximum Ratings
The V048K015T090 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 90 A in a
TM to -In
-0.3 to 7.0
volume of less than 0.25 in3 while providing low output
voltages with unprecedented efficiency. It may be
paralleled to deliver hundreds of amps at an output
voltage settable from 0.8 to 1.7 Vdc.
P R E L I M I N A RYThe VTM V048K015T090’s nominal output voltage is
1.5 Vdc from a 48 Vdc input factorized bus, Vf, and is
controllable from 0.8 to 1.7 Vdc at no load, and from
0.8 to 1.6 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 = 1/32, and an output resistance, ROUT = 1.0 milliohm, to
enable applications requiring a programmable low
output voltage at high current and high efficiency.
VC to -In
-0.3 to 19.0
+Out to -Out
-0.1 to 4.0
Isolation voltage
Operating junction temperature
-40 to 125
Vdc Input to Output
°C See Note
Output current
90 A Continuous
Peak output current
Case temperature during reflow
A For 1 ms
Storage temperature
-40 to 150
Output power
Peak output power
145 W Continuous
217 W For 1 ms
Note: 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.
Closing the loop back to an input Pre-Regulation
Module (PRM) or DC-DC converter can compensate
for ROUT.
Part Numbering
The 1.5 V VTM achieves break-through current density
of 360 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" (4 mm) over the
board. A J-lead package option supports on-board
surface mounting with a profile of only 0.25" (6 mm)
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.
V 048
Input Voltage
Configuration Options
A = On-board, elevated (Fig.16)
F = On-board (Fig.15)
K = In-board (Fig.14)
015 T 090
Output Voltage
(=VOUT x10)
Output Current
Product Grade Temperatures (°C)
Grade Storage Operating
T -40 to150 -40 to125
Vicor Corporation
Tel: 800-735-6200
V•I Chip Voltage Transformation Module V048K015T090 Rev. 1.0
Page 1 of 16

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V048K015T090 pdf
INPUT (Conditions are at 48 Vin, full load, and 25°C ambient unless otherwise specified)
Input voltage range
Input dV/dt
Input overvoltage turn-on
Input overvoltage turn-off
Input current
Input reflected ripple current
No load power dissipation
Internal input capacitance
Internal input inductance
Min Typ Max Unit
26 48 55 Vdc Operable down to zero V with external bias voltage
1 V/µs
57.6 Vdc
59.0 Vdc
3.2 Adc
mA p-p
Using test circuit in Fig.17; See Fig.1
2.50 3.5
4 µF
20 nH
OUTPUT (Conditions are at 48 Vin, full load, and 25°C ambient unless otherwise specified)
Rated DC current
P R E L I M I N A RYPeakrepetitivecurrent
DC current limit
Current share accuracy
Half load
Full load
Internal output inductance
Internal output capacitance
Load capacitance
Output overvoltage setpoint
Min Typ Max Unit
0 90 Adc
135 A
92 108 126 Adc
5 10 %
92.5 93.4
91.0 91.5
1.6 nH
306 µF
1.80 Vdc
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
See Parallel Operation on page 10
See Fig.3, 1.5 Vout
See Fig.3, 1.5 Vout
Effective value
Output ripple voltage
No external bypass
62 110 mV
See Figs.2 and 5
200 µF bypass capacitor
2 mV See Fig.6
Effective switching frequency
2.4 2.5
2.6 MHz
Fixed, 1.25 MHz per phase
Line regulation
1/32 0.0316
VOUT = K•VIN at no load
Load regulation
1.0 1.2 m
See Fig.20
Transient response
Voltage overshoot
20 mV 90 A load step with 100 µF CIN; See Figs.7 and 8
Response time
200 ns See Figs.7 and 8
Recovery time
1 µs See Figs.7 and 8
Vicor Corporation
Tel: 800-735-6200
V•I Chip Voltage Transformation Module V048K015T090 Rev. 1.0
Page 2 of 16

Part Number V048K015T090
Description (V048x015T090) Voltage Transformation Module
Maker Vicor Corporation - Vicor Corporation
Total Page 16 Pages
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