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部品番号 V048K120M025
部品説明 (V048x120x025) Voltage Transformation Module
メーカ Vicor Corporation
ロゴ Vicor Corporation ロゴ 
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V048K120M025 Datasheet, V048K120M025 PDF,ピン配置, 機能
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VTM
PRELIMINARY
V•I ChipTM – VTM
Voltage Transformation Module
• 48 V to 12 V V•I Chip Converter
• 25 A (37.5 A for 1 ms)
• High density – 1200 W/in3
• Small footprint – 280 W/in2
• Low weight – 0.5 oz (14 g)
• Pick & Place / SMD
• 125°C operation
• 1 µs transient response
• 3.5 million hours MTBF
• Typical efficiency 96%
• No output filtering required
• Surface mount BGA or J-Lead
packages
V048K120T025
K indicates BGA configuration. For other
mounting options see Part Numbering below.
©
Vf = 26 - 55 V
VOUT = 6.5 - 13.7 V
IOUT = 25 A
K = 1/4
ROUT = 13.9 mmax
Actual size
Product Description
The V048K120T025 V•I Chip Voltage Transformation
Module (VTM) breaks records for speed, density and
efficiency to meet the demands of advanced DSP, FPGA,
and ASIC at the point of load (POL) while providing
isolation from input to output. It achieves a response
time of less than 1 µs and delivers up to 25 A in a
volume of less than 0.25 in3 with unprecedented
efficiency. It may be paralleled to deliver hundreds of
amps at an output voltage settable from 6.5 to 13.7 Vdc.
The VTM V048K120T025’s nominal output voltage is
12 Vdc from a 48 Vdc input Factorized Bus, Vf, and is
controllable from 6.5 to 13.7 Vdc at no load, and from
6.5 to 13.4 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 = 1/4 , for applications requiring a programmable
output voltage at high current and high efficiency.
Closing the loop back to an input Pre-Regulation Module
(PRM) or DC-DC converter enables tight load regulation.
The 12 V VTM achieves break-through power density of
1200 W/in3 in a V•I Chip package compatible with
standard pick-and-place and surface mount assembly
processes. The V•I 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.
Absolute Maximum Ratings
Parameter
+In to -In
+In to -In
PC to -In
VC to -In
+Out to -Out
Isolation voltage
Output current
Peak output current
Output power
Peak output power
Case temperature
Operating junction temperature(1)
Values
-1.0 to 60
100
-0.3 to 7.0
-0.3 to 19.0
-0.1 to 30.0
2,250
25
37.5
300
450
208
-40 to 125
-55 to 125
Storage temperature
-40 to 150
-65 to 150
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
A
A
W
W
°C
°C
°C
°C
°C
Notes
For 100 ms
Input to Output
Continuous
For 1 ms
Continuous
For 1 ms
During reflow
T - Grade
M - Grade
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.
Part Numbering
V 048
Voltage
Transformation
Module
Input Voltage
Designator
K
Configuration Options
F = On-board (Figure 15)
K = In-board (Figure 14)
120
Output Voltage
Designator
(=VOUT x10)
T
025
Output Current
Designator
(=IOUT)
Product Grade Temperatures (°C)
Grade Storage Operating
T -40 to150 -40 to125
M -65 to150 -55 to125
vicorpower.com 800-735-6200
V•I Chip Voltage Transformation Module
V048K120T025
Rev. 1.0
Page 1 of 16

--------------------------------------------
V048K120M025 pdf, 電子部品, 半導体, ピン配列
Electrical Specifications (continued)
Waveforms
PRELIMINARY
Figure 1— Input reflected ripple current at full load and 48 Vf.
160
140
120
100
80
60
40
20
0
0
Ripple Voltage vs. Output Current
2.5 5
7.5 10 12.5 15 17.5 20 22.5 25
Output Current (A)
Figure 2— Output voltage ripple vs. output current at 12 Vout with no POL
bypass capacitance.
Efficiency vs. Output Current
98
96
94
92
90
88
86
84
0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25
Output Current (A)
Figure 3— Efficiency vs. output current at 48 Vf.
Power Dissipation vs. Output Current
14
12
10
8
6
4
2
0
0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25
Output Current (A)
Figure 4—Power dissipation as a function of output current at 48 Vf.
Figure 5— Output voltage ripple at full load and 12 Vout; without any
external bypass capacitor.
Figure 6—Output voltage ripple at full load and 12 Vout with 10 µF
ceramic external bypass capacitance and 20 nH distribution inductance.
vicorpower.com 800-735-6200
V•I Chip Voltage Transformation Module
V048K120T025
Rev. 1.0
Page 3 of 16





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