BCM48BX120Y120B00 Datasheet, PDF (1/20 Pages) Vicor Corporation – Isolated Fixed Ratio DC-DC Converter

Features & Benefits
• 48V_DC – 12V_DC 120W Bus Converter
• High efficiency (>95%) reduces
system power consumption
• High power density (801W/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:
n Undervoltage
n Overvoltage
n Overcurrent
n Short Circuit
n 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
BCM^® Bus Converter
BCM48Bx120y120B00
®
C
US
S
C NRTL US
Isolated Fixed Ratio DC-DC Converter
Product Ratings
V_IN = 48V (38 – 55V)
V_OUT = 12V (9.5 – 13.75V)
(no load)
P_OUT = up to 120W
K = 1/4
Description
The VI Chip^® Bus Converter is a high efficiency (>95%) Sine
Amplitude ConverterTM (SAC^TM) operating from a 38 to 55V_DC
primary bus to deliver an isolated ratiometric output voltage from
9.5 to 13.75V_DC. 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 12V regulator
can be located at the input to the SAC. Since the K factor of
the BCM48Bx120y120B00 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 BCM48BH120y120B00 is provided in a VI Chip package
compatible with standard pick-and-place and surface mount
assembly processes. The VI Chip package provides flexible thermal
management through its low junction-to-case and junction-to-
board thermal resistance. With high conversion efficiency the
BCM48Bx120y120B00 increases overall system efficiency and
lowers operating costs compared to conventional approaches.
Part Numbering
Product Number
Package Style (x) Product Grade (y)
BCM48Bx120y120B00
H = J-Lead
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
BCM^®
POL
F1
+IN
+OUT
POL
V_IN
3.15A
C1 10µF
V_OUT
-IN
-OUT
POL
BCM^® Bus Converter
Page 1 of 20
Rev 1.3
08/2016
vicorpower.com
800 927.9474