End of Life - Replaced by BCM48Bx480y300A00
BCM® Bus Converter
B048F480T30
B048F480M30
S
C
NRTL US
Narrow Input Range Sine Amplitude Converter™
• 48 V to 48 V VI Chip® BusConverter
• 300 Watt (450 Watt for 1 ms)
• High density – 1017 W/in3
• Small footprint – 260 W/in2
• Low weight – 0.5 oz (15 g)
• Typical efficiency 96%
VIN = 38.0 - 55 V
VOUT = 38.0 - 55.0 V
IOUT = 6.3 A
• 125°C operation (TJ)
• <1 µs transient response
• 3.5 million hours MTBF
• No output filtering required
K = 1
ROUT = 210.0 mΩ max
©
• 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 ConverterTM (SACTM
operating from a 38.0 to 55 Vdc primary bus to deliver
an isolated 38.0 V to 55.0 V secondary. The bus
Parameter
Values
-1.0 to 60
100
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
A
Notes
)
+In to -In
For 100 ms
PC to -In
-0.3 to 7.0
-0.5 to 60.0
2,250
converter may be used to power non-isolated POL
converters or as an independent 38.0 – 55.0 V source.
Due to the fast response time and low noise of the bus
+Out to -Out
Isolation voltage
Output current
Peak output current
Output power
Peak output power
Input to output
Continuous
For 1 ms
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.
8.2
9.4
A
300
W
Continuous
For 1 ms
450
W
The bus converter achieves a power density of 1017W/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 480
Output Voltage
Designator
T
30
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 3.4
vicorpower.com
800 927.9474
01/2014
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