BCM384
x
480 T 325A00
BCM™
Bus Converter
C
S
NRTL
US
FEATURES
•
384 Vdc – 48 Vdc 325 W Bus Converter
•
High efficiency (>95%) reduces system power
consumption
•
High power density (>1000 W/in
3
)
reduces power system footprint by >40%
•
“Full Chip” V
•
I 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.
DESCRIPTION
The V
•
I Chip™ bus converter is a high efficiency (>95%) Sine
Amplitude Converter™ (SAC™) operating from a 360 to 400
Vdc primary bus to deliver an isolated 45 – 50 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 BCM384F480T325A00 is 1/8, that capacitance
value can be reduced by a factor of 64x, resulting in savings of
board area, materials and total system cost.
The BCM384F480T325A00 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 BCM384F480T325A00 increases overall system
efficiency and lowers operating costs compared to
conventional approaches.
V
IN
= 360 – 400 V
V
OUT
= 45 – 50 V (
NO LOAD
)
P
OUT
= 325 W(
NOM
)
K = 1/8
•
Provides enable/disable control, internal temperature
monitoring
•
ZVS/ZCS Resonant Sine Amplitude Converter topology
•
Can be paralleled to create multi-kW arrays
TYPICAL APPLICATIONS
•
High End Computing Systems
•
Automated Test Equipment
•
Telecom Base Stations
•
High Density Power Supplies
•
Communications Systems
PART NUMBERING
PART NUMBER
PACKAGE STYLE
PRODUCT GRADE
BCM384
x
480 T325A00
F
= J-Lead
T
= Through hole
T
= -40° to 125°C
For Storage and Operating Temperatures see Section 6.0 General Characteristics
TYPICAL APPLICATION
VC
SG
OS
CD
VC
PC
TM
PR
enable / disable
switch
SW1
F1
+In
V
IN
C1
1 µF
-In
-Out
-In
+Out
+In
PC
TM
PC
TM
IL
BCM
PRM
+Out
+In
VTM
+Out
L
O
A
D
-Out
-In
-Out
V•I CHIP CORP. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200
v i c o r p o w e r. c o m
Rev. 1.9
4/2011
Page 1 of 18
VICOR [ VICOR CORPORATION ]
