
Not Recommended for New Designs - Replaced by BCM48Bx080y240A00
BCM ? Bus Converter
B048F080T24
B 048 F 080 M 24
S
C
NRTL
US
Narrow Input Range Sine Amplitude Converter?
? 48 V to 8 V VI Chip ? Bus Converter
? 240 Watt (360 Watt for 1 ms)
? High density – 813 W/in 3
? Typical efficiency 96%
? 125°C operation (T J )
? <1 μs transient response
V IN = 38 - 55 V
V OUT = 6.34 - 9.16 V
I OUT = 30 A
R OUT = 10.0 m ? max
? Small footprint – 210 W/in 2
? Low weight – 0.5 oz (15 g)
? 3.5 million hours MTBF
? No output filtering required
K = 1/6
?
? ZVS / ZCS isolated Sine
Amplitude Converter?
Product Description
Absolute Maximum Ratings
The VI Chip ? bus converter is a high efficiency (>96%),
narrow input range Sine Amplitude Converter TM (SAC TM )
operating from a 38 to 55 Vdc primary bus to deliver an
isolated 6.34 V to 9.16 V secondary. The bus converter
may be used to power non-isolated POL converters or as
an independent 6.34 – 9.16 V source. Due to the fast
response time and low noise of the bus converter, the
need for limited life aluminum electrolytic or tantalum
capacitors at the load is reduced—or eliminated—
resulting in savings of board area, materials and total
system cost.
The bus converter achieves a power density of 813 W/in 3
in a VI Chip package compatible with standard pick-and-
place and surface mount assembly process. The
Parameter
+In to -In
PC to -In
+Out to -Out
Isolation voltage
Output current
Peak output current
Output power
Peak output power
[a]
Case temperature during reflow
Values
-1.0 to 60
100
-0.3 to 7.0
-0.5 to 16
2,250
39
45.0
240
360
225
245
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
A
A
W
W
°C
°C
Notes
For 100 ms
Input to output
Continuous
For 1 ms
Continuous
For 1 ms
MSL 5
MSL 6, TOB = 4 hrs
VI Chip package provides flexible thermal management
through its low junction-to-board and junction-to-case
thermal resistance. Owing to its high conversion
efficiency and safe operating temperature range, the bus
Operating junction temperature
Storage temperature
[b]
-40 to 125
-55 to 125
-40 to 125
-65 to 125
°C
°C
°C
°C
T-Grade
M-Grade
T-Grade
M-Grade
converter does not require a discrete heat sink in typical
applications. Low junction-to-case and junction-to-lead
thermal impedances assure low junction temperatures
and long life in the harshest environments.
Notes:
[a] 245°C reflow capability applies to product with manufacturing date code 1001 and greater.
[b] The referenced junction is defined as the semiconductor having the highest temperature.
This temperature is monitored by a shutdown comparator.
Part Numbering
B
Bus Converter
048
Input Voltage
Designator
F
080
Output Voltage
Designator
T
24
Output Power
Designator
(=V OUT x10)
(=P OUT /10)
Configuration
Product Grade Temperatures (°C)
BCM ? Bus Converter
Page 1 of 12
Rev 2.7
01/2014
F = J-lead
T = Through hole
vicorpower.com
800 927.9474
Grade
T
M
Storage
-40 to125
-65 to 125
Operating (T J )
-40 to125
-55 to 125