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BCM
BCM352F440T330A00
BCM352T440T330A00
(Formerly VIB0003TFJ)
TM
Bus Converter
S
C
NRTL
US
FEATURES
? 352 Vdc – 44 Vdc 325 W Bus Converter
? High efficiency (>95%) reduces system power
consumption
? High power density (>1000 W/in 3 )
reduces power system footprint by >40%
? “Full Chip” V ? I Chip package enables surface mount,
low impedance interconnect to system board
? Contains built-in protection features: undervoltage,
overvoltage lockout, overcurrent protection, short
circuit protection, overtemperature protection.
? Provides enable/disable control, internal temperature
monitoring
? ZVS/ZCS Resonant Sine Amplitude Converter topology
? Can be paralleled to create multi-kW arrays
DESCRIPTION
The V ? I Chip TM bus converter is a high efficiency (>95%) Sine
Amplitude Converter TM (SAC TM ) operating from a 330 to 365
Vdc primary bus to deliver an isolated 41.25 – 45.63 V nominal,
unregulated secondary. The SAC offers a low AC impedance
beyond the bandwidth of most downstream regulators,
meaning that input capacitance normally located at the input
of a regulator can be located at the input to the SAC. Since the
K factor of the BCM352F440T330A00 is 1/8, that capacitance
value can be reduced by a factor of 64x, resulting in savings of
board area, materials and total system cost.
The BCM352F440T330A00 is provided in a V ? I Chip package
compatible with standard pick-and-place and surface mount
assembly processes. The V ? I Chip package provides flexible
thermal management through its low junction-to-case and
junction-to-board thermal resistance. With high conversion
efficiency the BCM352F440T330A00 increases overall system
efficiency and lowers operating costs compared to
conventional approaches.
TYPICAL APPLICATIONS
? High End Computing Systems
? Automated Test Equipment
? Telecom Base Stations
? High Density Power Supplies
? Communications Systems
TYPICAL APPLICATION
V IN = 330 – 365 V
V OUT = 41.25 – 45.63 V ( NO LOAD )
PART NUMBER
BCM352F440T330A00
VC
VC
PR
SG
P OUT = 325 W( NOM )
K = 1/8
DESCRIPTION
-40°C – 125°C T J , J lead
enable / disable
switch
PC
TM
PC
TM
OS
CD
PC
TM
L
F1
SW1
+In
BCM
+Out
IL
+In
PRM
+Out
+In
VTM
+Out
O
A
V IN
C1
1 μF
D
-In
-Out
-In
-Out
-In
-Out
Rev. 1.7
V?I CHIP INC. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200
12/2010
Page 1 of 17
v i c o r p o w e r. c o m
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