BCM48BH120120B00 Datasheet, PDF (1/16 Pages) Vicor Corporation – Fixed Ratio DC-DC Converter

BCM^® Bus Converter
BCM48BH120T120B00
S
C NRTL US
Fixed Ratio DC-DC Converter
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” VI Chip^® package enables surface mount,
low impedance interconnect to system board
• Contains built-in protection features against:
- Undervoltage
- Overvoltage
- Overcurrent
- Short Circuit
- Overtemperature
• 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 VI Chip^® 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 ratiometric output from 9.5 to
13.75. The SAC offers a low AC impedance beyond the band-
width 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 BCM48BH120T120B00 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 BCM48BH120T120B00 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 BCM48BH120T120B00 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 NUMBERING
PART NUMBER
BCM48BH120 x 120 B00
PRODUCT GRADE
T = -40° to 125°C
M = -55° to 125°C
For Storage and Operating Temperatures see Section 6.0 General Characteristics
enable / disable
POL
switch
TM
PC
SW1
POL
B^BC^CM^M™^®
F1
+In
+Out
POL
V_IN
3.15 A
C1 10 µF
V_OUT
POL
-In
-Out
BCM^® Bus Converter
Page 1 of 16
Rev 1.2
07/2015
vicorpower.com
800 927.9474