vicorpower.com 800-735-6200 V•I Chip Bus Converter Module B352F110T24 Rev. 1.1
Page 1 of 13
V•I Chip Bus Converter Module
PRELIMINARY
Product Description
The V•I Chip Bus Converter Module (BCM) is a high
efficiency (>95%), narrow input range Sine Amplitude
Converter (SAC) operating from a 330 to 365 Vdc
primary bus to deliver an isolated low voltage secondary.
The off-line BCM provides an isolated 10.3 -11.4 V
distribution bus and is ideal for use in silver boxes and
PFC front ends. Due to the fast response time and low
noise of the BCM, the need for limited life aluminum
electrolytic or tantalum capacitors at the input of POL
converters is reduced—or eliminated—resulting in
savings of board area, materials and total system cost.
The BCM achieves a power density of 876 W/in
3
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. Owing to its high conversion
efficiency and safe operating temperature range, the
BCM 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.
Parameter Values Unit Notes
+In to -In -1.0 to 400 Vdc
+In to -In 500 Vdc For 100 ms
PC to -In -0.3 to 7.0 Vdc
+Out to -Out -0.5 to 16.0 Vdc
Isolation voltage 4,242 Vdc Input to Output
Output current 24.1 A Continuous
Peak output current 32.7 A For 1 ms
Output power 240 W Continuous
Peak output power 360 W For 1 ms
Case temperature 208 °C During reflow
Operating junction temperature
(1)
-40 to 125 °C T - Grade
-55 to 125 °C M - Grade
Storage temperature -40 to 150 °C T - Grade
-65 to 150 °C M - Grade
• 352 V to 11.0 V V•I Chip Converter
• 240 Watt (360 Watt for 1 ms)
• High density – up to 876 W/in
3
• Small footprint – 210 W/in
2
• Low weight – 0.5 oz (14 g)
• ZVS/ZCS isolated sine
amplitude converter
• Typical efficiency 95%
• 125°C operation
• <1 µs transient response
• >2.6 million hours MTBF
• No output filtering required
B352F110T24
Vin = 330 - 365 V
Vout = 10.3 - 11.4 V
Iout = 21.8 A
K = 1/32
Rout = 15.0 mΩmax
Actual size
©
V•I Chip
TM
– BCM
Bus Converter Module
BCM
Output Power
Designator
(=POUT/10)
B 352 F 110 T 24
Bus Converter
Module
Input Voltage
Designator
Product Grade Temperatures (°C)
Grade Storage Operating
T -40 to150 -40 to125
M -65 to150 -55 to125
Configuration
(Figure 15)
Output Voltage
Designator
(=VOUT x10)
Part Numbering
Absolute Maximum Ratings
Note:
(1) The referenced junction is defined as the semiconductor having the highest temperature.
This temperature is monitored by a shutdown comparator.