BCM® Bus Converter
BCM352 x 125 y 300A00
S
C
NRTL US
Sine Amplitude Converter™ (SAC™)
FEATURES
DESCRIPTION
The VI Chip® bus converter is a high efficiency (>95%) Sine Am-
plitude Converter™ (SAC™) operating from a 330 to 365 Vdc
primary bus to deliver an isolated 11.79 – 13.04 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 BCM352F125T300A00 is 1/28, that capacitance
value can be reduced by a factor of 784x, resulting in savings of
board area, materials and total system cost.
• 352 Vdc – 12.5 Vdc 300 W Bus Converter
• High efficiency (>95%) reduces system power
consumption
• High power density (>1000 W/in3)
reduces power system footprint by >40%
• “Full Chip” VI 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.
The BCM352F125T300A00 is provided in a VI Chip package
compatible with standard pick-and-place and surface mount
assembly processes. The VI Chip package provides flexible ther-
mal management through its low junction-to-case and junc-
tion-to-board thermal resistance. With high conversion
efficiency the BCM352F125T300A00 increases overall system
efficiency and lowers operating costs compared to
conventional approaches.
• Provides enable/disable control, internal temperature
monitoring
• ZVS/ZCS Resonant Sine Amplitude Converter topology
• Can be paralleled to create multi-kW arrays
TYPICAL APPLICATIONS
VIN = 330 – 365 V
POUT = 300 W(NOM)
• High End Computing Systems
• Automated Test Equipment
• High Density Power Supplies
V
OUT = 11.79 – 13.04 V(NO LOAD) K = 1/28
PART NUMBERING
PART NUMBER
PACKAGE STYLE
PRODUCT GRADE
F = J-Lead
BCM352 x
125
T300A00
T = -40° to 125 °C
T = Through hole
For Storage and Operating Temperatures see Section 6.0 General Characteristics
TYPICAL APPLICATION
PC
POL
POL
enable / disable
TM
switch
BCM®
SW1
F1
POL
+In
-In
+Out
VOUT
C1
1 µF
VIN
POL (8)
-Out
BCM® Bus Converter
Page 1 of 18
Rev 1.7
vicorpower.com
800 735.6200
1/2013
VICOR [ VICOR CORPORATION ]
