VTM48E x 020 y 080A00
TM
S
VTM
Current Multiplier
®
C
NRTL US
C
US
FEATURES
DESCRIPTION
The V I ChipTM current multiplier is a high efficiency (>92%)
Sine Amplitude ConverterTM (SACTM) operating from a
26 to 55 Vdc 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
VTM48EF020T080A00 is 1/24, the capacitance value can be
reduced by a factor of 576, resulting in savings of board area,
materials and total system cost.
•
• 48 Vdc to 2 Vdc 80 A current multiplier
TM
- Operating from standard 48 V or 24 V PRM regulators
• High efficiency (>92%) reduces system power
consumption
• High density (272 A/in3)
•
• “Full Chip” V I Chip package enables surface mount,
low impedance interconnect to system board
• Contains built-in protection features:
- Overvoltage Lockout
- Overcurrent
•
The VTM48EF020T080A00 is provided in a V I Chip package
compatible with standard pick-and-place and surface mount
•
assembly processes. The co-molded V I Chip package provides
- Short Circuit
enhanced thermal management due to a large thermal
interface area and superior thermal conductivity. The high
conversion efficiency of the VTM48EF020T080A00 increases
overall system efficiency and lowers operating costs compared
to conventional approaches.
- Overtemperature
• Provides enable / disable control,
internal temperature monitoring
• ZVS / ZCS resonant Sine Amplitude Converter topology
The VTM48EF020T080A00 enables the utilization of Factorized
Power ArchitectureTM which provides efficiency and size
benefits by lowering conversion and distribution losses and
promoting high density point of load conversion.
• Less than 50ºC temperature rise at full load
in typical applications
TYPICAL APPLICATIONS
• High End Computing Systems
• Automated Test Equipment
• High Density Power Supplies
• Communications Systems
(NOM)
VIN = 26 to 55 V
IOUT = 80 A
K = 1/24
(NO LOAD)
VOUT = 0.5 to 2.3 V
PART NUMBERING
PART NUMBER
PACKAGE STYLE
F = J-Lead
PRODUCT GRADE
T = -40 to 125°C
M = -55 to 125°C
VTM48E x 020 y 080A00
T = Through hole
For Storage and Operating Temperatures see Section 6.0 General Characteristics
TYPICAL APPLICATION
Regulator
Voltage Transformer
VC
TM
VC
PC
L
PR
SG
OS
CD
PC
TM
IL
VTMTM
PRMTM
Regulator
(See Application Note AN:024)
O
A
Transformer
+Out
+Out
+In
+In
D
VIN
-Out
-Out
-In
-In
Factorized Power ArchitectureTM
Rev. 3.1
2/2011
V•I CHIP CORP. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200
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vicorpower.com