VTM™ Current Multiplier
VTM48Ex120y025A00
S
C
NRTL US
High-Efficiency Sine Amplitude Converter™
Features & Benefits
Product Ratings
•
48VDC to 12VDC 25A current multiplier
VIN = 26 – 55V
IOUT = 25A (Nominal)
K = 1/4
ꢀOperating from standard 48V or 24V PRM™ Regulators
VOUT = 6.5 – 13.8V (No Load)
• High efficiency (>96%) reduces system power consumption
• High density (85A/in3)
Product Description
The VI Chip® current multiplier is a high-efficiency (>96%)
Sine Amplitude Converter™ (SAC) operating from a 26 to 55VDC
primary bus to deliver an isolated output. The Sine Amplitude
Converter offers a low AC impedance beyond the bandwidth
of most downstream regulators; therefore capacitance normally
at the load can be located at the input to the Sine Amplitude
Converter. Since the K factor of the VTM48EF120T025A00 is 1/4,
the capacitance value can be reduced by a factor of 16, resulting in
savings of board area, materials and total system cost.
• “Full Chip” VI Chip® package enables surface mount,
low-impedance interconnect to system board
•
Contains built-in protection features against:
ꢀOvervoltage Lockout
ꢀOvercurrent
ꢀShort Circuit
ꢀOvertemperature
• Provides enable / disable control,
internal temperature monitoring
The VTM48EF120T025A00 is provided in a VI Chip package
compatible with standard pick-and-place and surface mount
assembly processes. The co-molded VI Chip package provides
enhanced thermal management due to a large thermal interface
area and superior thermal conductivity. The high conversion
efficiency of the VTM48EF120T025A00 increases overall
system efficiency and lowers operating costs compared to
conventional approaches.
• ZVS / ZCS resonant Sine Amplitude Converter topology
• Less than 50ºC temperature rise at full load
in typical applications
Typical Applications
The VTM48EF120T025A00 enables the utilization of Factorized
Power Architecture™ which provides efficiency and size benefits
by lowering conversion and distribution losses and promoting
high-density point-of-load conversion.
•
•
•
•
High-End Computing Systems
Automated Test Equipment
High-Density Power Supplies
Communications Systems
Part Numbering
Product Number
Package Style (x)
Product Grade (y)
F = J-Lead
T = –40 to 125°C
M = –55 to 125°C
VTM48Ex120y025A00
T = Through hole
For Storage and Operating Temperatures see General Characteristics Section
Typical Application
Regulator
Voltage Transformer
VC
SG
OS
CD
TM
VC
PC
PR
PC
TM
IL
L
(See Application Note AN:024)
™
™
VTM
PRM
Regulator
O
Transformer
A
D
+OUT
+OUT
+IN
+IN
VIN
-OUT
-OUT
-IN
-IN
Factorized Power ArchitectureTM
VTM™ Current Multiplier
Page 1 of 19
Rev 3.6
07/2018