Not Recommended for New Designs
BCM48B x 040 y 200A00
PRELIMINARY DATASHEET
BCM™
Bus Converter
S
®
C
NRTL US
C
US
FEATURES
DESCRIPTION
•
The V I Chip™ bus converter is a high efficiency (>94%) Sine
Amplitude Converter™ (SAC™) operating from a 38 to 55 Vdc
primary bus to deliver an isolated, unregulated 3.2 to 4.6
output. The Sine Amplitude Converter offers a low AC
impedance beyond the bandwidth of most downstream
regulators; therefore capacitance normally at the load can be
located at the input to the Sine Amplitude Converter. Since the
transformation ratio of the BCM48BF040T200A00 is 1/12, the
capacitance value can be reduced by a factor of 144x, resulting
in savings of board area, materials and total system cost.
• 48 Vdc – 4 Vdc 200 W Bus Converter
• High efficiency (>94%) reduces system
power consumption
• High power density (>681 W/in3)
reduces power system footprint by >40%
• Contains built-in protection features:
- Undervoltage
- Overvoltage Lockout
- Overcurrent Protection
- Short circuit Protection
- Overtemperature Protection
•
The BCM48BF040T200A00 is provided in a V I Chip package
compatible with standard pick-and-place and surface mount
assembly processes. The co-molded V I Chip package provides
•
enhanced thermal management due to a large thermal
interface area and superior thermal conductivity. The high
conversion efficiency of the BCM48BF040T200A00 increases
overall system efficiency and lowers operating costs compared
to conventional approaches.
• Provides enable/disable control,
internal temperature monitoring
• Can be paralleled to create multi-kW arrays
TYPICAL APPLICATIONS
PART NUMBERING
• High End Computing Systems
• Automated Test Equipment
• High Density Power Supplies
• Communications Systems
PART NUMBER
PACKAGE STYLE
PRODUCT GRADE
F = J-Lead
T = -40° to 125°C
BCM48B x 040 y 200A00
T = Through hole M = -55° to 125°C
For Storage and Operating Temperatures see Section 6.0 General Characteristics
TYPICAL APPLICATION
PC
enable / disable
TM
L
O
A
D
switch
SW1
TM
BCM
Bus Converter
F1
+In
+Out
VIN
-In
-Out
Rev. 1.1
7/2011
V•I CHIP CORP. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200
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vicorpower.com