BCM48BH120M120A00 Datasheet, PDF (1/16 Pages) Vicor Corporation – Bus Converter

BCM^TM
Bus Converter
BCM48BH120T120A00
BCM48BH120M120A00
(Formerly VIB0101THJ)
S
C NRTL US
FEATURES
• 48 Vdc – 12 Vdc 120 W Bus Converter
• High efficiency (>95%) reduces system power
consumption
• High power density (801 W/in³) reduces power system
footprint by >50%
• “Half Chip” V•I Chip package enables surface mount,
low impedance interconnect to system board
• Contains built-in protection features: undervoltage,
overvoltage lockout, over current protection, short
circuit protection, overtemperature protection.
• Provides enable/disable control, internal temperature
monitoring
• ZVS/ZCS Resonant Sine Amplitude Converter topology
• Less than 50°C temperature rise at full load in typical
applications
TYPICAL APPLICATION
• High End Computing Systems
• Automated Test Equipment
• Telecom Base Stations
• High Density Power Supplies
• Communication Systems
TYPICAL APPLICATION
DESCRIPTION
The V•I Chip^TM Bus Converter is a high efficiency (>95%) Sine
Amplitude Converter^TM (SAC^TM) operating from a 38 to 55 Vdc
primary bus to deliver an isolated 12 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 12 V
regulator can be located at the input to the SAC. Since the
K factor of the BCM48BH120T120A00 is 1/4, that capacitance
value can be reduced by a factor of 16x, resulting in savings of
board area, materials and total system cost.
The BCM48BH120T120A00 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 BCM48BH120T120A00 increases overall system
efficiency and lowers operating costs compared to
conventional approaches.
V_IN = 38 – 55 V
V_OUT = 9.5 – 13.75 V (NO LOAD)
P_OUT = 120 W_(NOM)
K = 1/4
PART NUMBER
BCM48BH120T120A00
DESCRIPTION
-40°C – 125°C T_J, J lead
enable / disable
POL
switch
TM
PC
SW1
POL
F1
+In ^BCM+Out
POL
V_IN
3.15 A
C1 10 µF
V_OUT
POL
-In
-Out
v i c o r p o w e r. c o m
V•I CHIP INC. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200
Rev. 2.0
12/10
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