Part Numbering and Configuration Options
V•I Chip BUS CONVERTER PART NUMBERING
B
048
K
120
T
20
Input Voltage
Designator
Configuration Options
Product Grade Temperatures (°C)
Bus Converter
Module
Output Power
Designator
(=Pout/10)
Output Voltage
Designator
(=Vout x10)
Grade
T
Storage
-40 to150 -40 to125
Operating
F
= On-board (Fig.21)
G = On-board with 0.25"
Integral Pin Fins (Fig.23)
K = In-board (Fig.20)
L
= In-board with 0.25"
Integral Pin Fins (Fig.22)
CONFIGURATION OPTIONS
IN-BOARD WITH 0.25"
PIN FINS**
ON-BOARD WITH 0.25"
PIN FINS**
CONFIGURATION
IN-BOARD*
1190 W/in3
2.1 °C/W
ON-BOARD*
Effective Power Density
800 W/in3
2.4 °C/W
445 W/in3
360 W/in3
Junction-Board
Thermal Resistance
2.1 °C/W
2.4 °C/W
Junction-Case
Thermal Resistance
1.1 °C/W
6.5 °C/W
1.1 °C/W
N/A
N/A
Junction-Ambient
Thermal Resistance 300LFM
6.8 °C/W
5.0 °C/W
5.0 °C/W
BCM Model No.
B048K120T20
B048F120T20
B048L120T20
B048G120T20
*Surface mounted to a 2" x 2" FR4 board, 8 oz Cu total
**Pin Fin heat sink also available as a separate item
21.5
0.85
22.0
0.87
32.0
1.26
32.0
1.26
4.0
0.16
6.3
0.25
ON–BOARD MOUNT
IN–BOARD MOUNT
(V•I Chip recessed into PCB)
mm
in
mm
in
Figure 20—In-board mounting – package K
Figure 21—On-board mounting – package F
Vicor Corporation
Tel: 800-735-6200
V•I Chip Bus Converter
B048K120T20
Rev. 1.7
Page 10 of 16
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vicorpower.com
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