VTM™ Current Multiplier
VTM48Ex040y050B0R
S
C
NRTL US
High Efficiency, Bi-directional, Sine Amplitude Converter™
Features & Benefits
Description
The VI Chip® bi-directional current multiplier is a Sine Amplitude
• 48VDC to 4VDC 50A bi-directional current multiplier
Converter™ (SAC™) operating from a 26 to 55VDC primary
source or a 2.2 to 4.6VDC secondary source to power a load. The
bi-directional Sine Amplitude Converter isolates and transforms
voltage at a secondary:primary ratio of 1/12. The SAC offers a
low AC impedance beyond the bandwidth of most downstream
regulators; therefore for a step-down conversion; capacitance
normally at the load can be located at the source to the Sine
Amplitude Converter to enable a reduction in size of capacitors.
Since the K factor of the VTM48EF040T050B0R is 1/12, the
capacitance value on the primary side can be reduced by a factor
of 144 in an application where the source is located on the primary
side, resulting in savings of board area, materials and total
system cost.
• Can power a load connected to either the primary or
secondary side
• High efficiency (>94%) reduces system power
consumption
• High density (170A/in3)
• “Full Chip” VI Chip® package enables surface mount,
low impedance interconnect to system board
• Contains built-in protection features against:
nꢀOvervoltage Lockout
nꢀOvercurrent
The VTM48EF040T050B0R 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 VTM48EF040T050B0R increases overall system
efficiency and lowers operating costs compared to
nꢀShort Circuit
nꢀOvertemperature
• Provides enable/disable control,
internal temperature monitoring
• ZVS/ZCS resonant Sine Amplitude Converter topology
conventional approaches.
• Less than 50ºC temperature rise at full load
in typical applications
The VTM48EF040T050B0R 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.
Typical Applications
• High End Computing Systems
• Automated Test Equipment
• High Density Power Supplies
• Communications Systems
Product Ratings
VPRI = 26 – 55V
ISEC = 50A (NOM)
K = 1/12
VSEC = 2.2 – 4.6V (no load)
Part Numbering
Typical Application
Product Number
Package Style
Product Grade
+IN
+OUT
F = J-Lead
T = -40° to 125°C
M = -55° to 125°C
Enable
VTM48Ex040y050B0R
PRM A
T = Through hole
-IN
-OUT
+PRI
-PRI
+SEC
-SEC
For Storage and Operating Temperatures see General Characteristics Section
VTM®
Battery
+IN
+OUT
-OUT
Enable
PRM B
-IN
VTM™ Current Multiplier
Page 1 of 21
Rev 1.3
11/2016
vicorpower.com
800 927.9474