End of Life - Replaced by BCM48Bx080y240A00
BCM® Bus Converter
B048F080T24
B048F080M24
S
C
NRTL US
Narrow Input Range Sine Amplitude Converter™
• 48 V to 8 V VI Chip® BusConverter
• 240 Watt (360 Watt for 1 ms)
• High density – 813 W/in3
• Typical efficiency 95%
VIN = 38 - 55 V
VOUT = 6.34 - 9.16 V
IOUT = 30 A
K = 1/6
ROUT = 10.0 mΩ max
• 125°C operation (TJ)
• <1 µs transient response
• 3.5 million hours MTBF
• No output filtering required
• Small footprint – 210 W/in2
• Low weight – 0.5 oz (15 g)
©
• ZVS / ZCS isolated Sine
Amplitude Converter™
Product Description
The VI Chip® bus converter is a high efficiency (>95%),
narrow input range Sine Amplitude ConverterTM (SACTM
Absolute Maximum Ratings
Parameter
Values
-1.0 to 60
100
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
A
Notes
)
+In to -In
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.
For 100 ms
PC to -In
-0.3 to 7.0
-0.5 to 16
2,250
39
+Out to -Out
Isolation voltage
Output current
Peak output current
Output power
Peak output power
Input to output
Continuous
For 1 ms
45.0
A
240
W
Continuous
For 1 ms
360
W
The bus converter achieves a power density of 813 W/in3
in a VI Chip package compatible with standard pick-and-
place and surface mount assembly process. The
225
°C
MSL 5
Case temperature during reflow[a]
245
°C
MSL 6, TOB = 4 hrs
T-Grade
VI Chip package provides flexible thermal management
through its low junction-to-board and junction-to-case
thermal resistance. Owing to its high conversion
-40 to 125
°C
Operating junction temperature[b]
Storage temperature
-55 to 125
-40 to 125
-65 to 125
°C
°C
°C
M-Grade
T-Grade
efficiency and safe operating temperature range, the bus
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.
M-Grade
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
048 F 080
Output Voltage
Designator
T
24
Output Power
Designator
(=POUT/10)
Input Voltage
Designator
Bus Converter
(=VOUT x10)
Configuration
F = J-lead
T = Through hole
Product Grade Temperatures (°C)
Grade
Storage
-40 to125
-65 to 125
Operating (TJ)
T
-40 to125
M
-55 to 125
BCM® Bus Converter
Page 1 of 12
Rev 2.8
vicorpower.com
800 927.9474
06/2014
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