VTM48EH040_025A00 Datasheet, PDF (1/16 Pages) Vicor Corporation – VTM™Current Multiplier

VTM48EH040 x 025A00
(Formerly VIV0104THJ)
VTM™
Current Multiplier
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FEATURES
• 40 Vdc to 3.3 Vdc 25 A current multiplier
- Operating from standard 48 V or 24 V PRM^TM regulators
• High efficiency (>93%) reduces system power
consumption
• High density (167 A/in³)
• “Half Chip” V•I Chip™ package enables surface mount,
low impedance interconnect to system board
• Contains built-in protection features against:
- Overvoltage
- Overcurrent
- Short Circuit
- Overtemperature
• Provides enable / disable control, internal temperature
monitoring, current monitoring
• ZVS / ZCS resonant Sine Amplitude Converter topology
• 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
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DESCRIPTION
The V•I Chip™ current multiplier is a high efficiency (>93%)
Sine Amplitude Converter™ (SAC™) 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, which
means that capacitance normally at the load can be located
at the input to the Sine Amplitude Converter. Since the K factor
of the VTM48EH040T025A00 is 1/12, that capacitance value
can be reduced by a factor of 144, resulting in savings of board
area, materials and total system cost.
The VTM48EH040T025A00 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
enhanced thermal management due to large thermal interface
area and superior thermal conductivity. With high conversion
efficiency the VTM48EH040T025A00 increases overall system
efficiency and lowers operating costs compared to conventional
approaches.
The VTM48EH040T025A00 enables the utilization of Factorized
Power Architecture^TM providing efficiency and size benefits by
lowering conversion and distribution losses and promoting high
density point of load conversion.
V_IN = 26 to 55 V
V_OUT = 2.2 to 4.6 V(NO LOAD)
I_OUT = 25 A (NOM)
K= 1/12
PART NUMBERING
PART NUMBER
VTM48EH040 x 025A00
PRODUCT GRADE
T = -40° to 125°C
M = -55° to 125°C
For Storage and Operating Temperatures see Section 6.0 General Characteristics
Regulator
Current Multiplier
VC
PR
SG
OS
PC
CD
TM
IL
PRM™
PC
IM
VC
TM
VTM™
L
O (See Application Note AN:024)
+In
+Out
VIN
+In
+Out
A
D
-In
-Out
-In
-Out
Factorized Power Architecture™
v i c o r p o w e r. c o m
V•I CHIP CORP. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200
Rev. 2.0
5/2011
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