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Datasheet: B048G120T10 (Vicor Corporation)

VI Chip - BCM Bus Converter Module

 

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Vicor Corporation
Vicor Corporation
Tel: 800-735-6200
VI Chip Bus Converter
B048K120T10
Rev. 1.2
Page 1 of 16
vicorpower.com
4
5
PRELIMIN
ARY
Product Description
The VI Chip Bus Converter Module
(BCM) is a high efficiency (>96%),
narrow input range Voltage
Transformation Module (VTM) operating
from a pre-regulated 48 Vdc primary bus
to deliver an isolated 12 V secondary for
Intermediate Bus Architecture
applications. The BCM may be used to
power non-isolated POL converters or as
an independent 12 V source. 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
400 W/in
3
and may be surface mounted
with a profile as low as 0.16" (4mm) over
the PCB. Its VI Chip power BGA package
is compatible with on-board or in-board
surface mounting. The VI Chip package
provides flexible thermal management
through its low Junction-to-Case and
Junction-to-BGA 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. It is also
compatible with heat sink options,
assuring low junction temperatures and
long life in the harshest environments.
Absolute Maximum Ratings
Parameter
Values
Unit
Notes
+In to -In
-1.0 to 60.0
Vdc
+In to -In
100
Vdc
For 100 ms
PC to -In
-0.3 to 7.0
Vdc
TM to -In
-0.3 to 7.0
Vdc
SG to -In
500
mA
+Out to -Out
-0.5 to 15.0
Vdc
Isolation voltage
1500
Vdc
Input to Output
Operating junction temperature
-40 to 125
C
See note 2
Output current
8.3
A
Continuous
Peak output current
12.5
A
For 1 ms
Case temperature during reflow
208
C
Storage temperature
-40 to 150
C
Output power
100
W
Continuous
Peak output power
150
W
For 1 ms
Thermal Resistance
Symbol
Parameter
Typ
Max
Units
R
JC
Junction-to-case
1.1
1.5
C/W
R
JB
Junction-to-BGA
2.1
2.5
C/W
R
JA
Junction-to-ambient
3
6.5
7.2
C/W
R
JA
Junction-to-ambient
4
5.0
5.5
C/W
48V to 12V VI Chip Converter
100 Watt (150 Watt for 1 ms)
High density up to 400 W/in
3
Small footprint 100 W/in
2
Low weight 0.4 oz (12 g)
Pick & Place / SMD
>96% efficiency
125C operation
<1 s transient response
>3.5 million hours MTBF
No output filtering required
VI Chip BGA package
B048K120T10
1
Vin = 42 - 53 V
Vout = 10.5 - 13.25 V
Iout = 8.3 A
K =
1
/
4
Rout = 32 m
max
Notes
1. For complete product matrix see chart on page 10.
2. The referenced junction is defined as the semiconductor having the highest temperature. This
temperature is monitored by the temperature monitor (TM) signal and by a shutdown comparator.
3. B048K120T10 surface mounted in-board to a 2" x 2" FR4 board, 4 layers 2 oz Cu, 300 LFM.
4. B048L120T10 (0.25"H integral Pin Fins) surface mounted on FR4 board, 300 LFM.
Actual size
VI Chip
TM
BCM
Bus Converter Module
Vicor Corporation
Tel: 800-735-6200
VI Chip Bus Converter
B048K120T10
Rev. 1.2
Page 2 of 16
vicorpower.com
4
5
PRELIMIN
ARY
Specifications
Parameter
Min
Typ
Max
Unit
Note
Input voltage range
42
48
53
V
Input dV/dt
10
V/s
Input undervoltage turn-on
42
V
Input undervoltage turn-off
37
V
Input overvoltage turn-on
53
V
Input overvoltage turn-off
59
V
Input quiescent current
1.5
1.8
mA
PC low
Inrush current overshoot
1.0
A
Using test circuit in Fig.24; See Fig.1
Input current
2.5
A
Input reflected ripple current
52
70
mA p-p
Using test circuit in Fig.24; See Fig.4
No load power dissipation
1.7
3.0
W
Internal input capacitance
2
F
Internal input inductance
20
nH
Recommended external input capacitance
8
F
200 nH maximum source inductance; See Fig.24
INPUT (Conditions are at nominal line, full load, and 25C ambient unless otherwise specified)
Figure 1-- Inrush transient current at full load and nominal V
IN
with PC enabled
Figure 2-- Output voltage turn-on waveform with PC enabled
at full load and nominal V
IN
Figure 3--Output voltage turn-on waveform with input turn-on
at full load and nominal V
IN
Figure 4-- Input reflected ripple current at full load and
nominal V
IN
INPUT WAVEFORMS
Vicor Corporation
Tel: 800-735-6200
VI Chip Bus Converter
B048K120T10
Rev. 1.2
Page 3 of 16
vicorpower.com
4
5
PRELIMIN
ARY
Specifications, continued
Parameter
Min
Typ
Max
Unit
Note
Rated DC current
0
8.3
A
Peak repetitive current
12.5
A
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
DC current limit
8.3
10.5
13.1
A
Current share accuracy
5
10
%
See Parallel Operation on page 11
Efficiency
Half load
95.0
95.5
%
See Fig.5
Full load
95.0
96.5
%
See Fig.5
Internal output inductance
1.6
nH
Internal output capacitance
7
F
Effective value
Load capacitance
1000
F
Output overvoltage setpoint
14.5
V
Output ripple voltage
No external bypass
70
135
mV
See Figs.7 and 10
1F bypass capacitor
6
mV
See Fig.8
Average short circuit current
200
mA
Effective switching frequency
2.8
3.5
4.2
MHz
Fixed, 1.75 MHz per phase
Line regulation
K
0.245
1/4
0.255
V
OUT
=KV
IN
at no load
Load regulation
R
OUT
32
m
See Figs.9 and 28
Transient response
Voltage undershoot
140
mV
0 -8.3A load step, w/Cin = 100F, see Fig.11
Voltage overshoot
96
mV
8.3 - 0A load step, w/Cin =100F, see Fig.12
Response time
200
ns
See Figs.11 and 12
Recovery time
1
s
See Figs.11 and 12
Output overshoot
Input turn-on
0
mV
No output filter; See Fig.2
PC enable
0
mV
No output filter; See Fig.3
Output turn-on delay
From application of power
180
300
ms
See Fig.3
From release of PC pin
320
410
s
See Fig.2
OUTPUT (Conditions are at nominal line, full load, and 25C ambient unless otherwise specified)
Efficiency vs. Output Power
84
86
88
90
92
94
96
98
0
10
20
30
40
50
60
70
80
90
100
Output Power (W)
Efficiency (%)
Figure 5-- Efficiency vs. output power at nominal V
IN
Power Dissipation
0
0.5
1
1.5
2
2.5
3
3.5
4
0
10
20
30
40
50
60
70
80
90
100
Output Power (W)
Power Dissipation (W)
Figure 6--Power dissipation as a function of output power
OUTPUT WAVEFORMS
Vicor Corporation
Tel: 800-735-6200
VI Chip Bus Converter
B048K120T10
Rev. 1.2
Page 4 of 16
vicorpower.com
4
5
PRELIMINARY
Specifications, continued
Figure 8--Output voltage ripple at full load and nominal V
IN
with 1 F ceramic external bypass capacitor.
Figure 7-- Output voltage ripple at full load and nominal V
IN
;
without any external bypass capacitor.
Figure 9-- Output impedance vs. frequency
Output Ripple (mV)
0
10
20
30
40
50
60
70
80
0
10
20
30
40
50
60
70
80
90
100
Output Power (W)
Figure 10-- Output voltage ripple vs. output power at nominal
line without any external bypass capacitor.
Figure 11-- 0 -8.3A transient response with no external bypass
capacitance.
Figure 12-- 8.3 - 0A transient response with no external
bypass capacitance.
Vicor Corporation
Tel: 800-735-6200
VI Chip Bus Converter
B048K120T10
Rev. 1.2
Page 5 of 16
vicorpower.com
4
5
PRELIMIN
ARY
Parameter
Min
Typ
Max
Unit
Note
Primary control (PC)
DC voltage
4.8
5.0
5.2
V
Module disable voltage
2.4
2.5
V
Module enable voltage
2.5
2.6
V
Current limit
2.4
2.5
2.9
mA
Source only
Enable delay time
320
410
s
See Fig.2
Disable delay time
16
40
s
See Fig.13
Temperature Monitor (TM)
27C setting
2.95
3.00
3.05
V
Operating junction temperature
Temperature coefficient
10
mV/C
Full range accuracy
-5
5
C
Operating junction temperature
Current limit
100
A
Source only
Auxiliary Pins (Conditions are at nominal line, full load, and 25C ambient unless otherwise specified)
Figure 13-- V
OUT
at full load vs. PC disable
Figure 14-- PC signal during fault
Specifications, continued
Parameter
Min
Typ
Max
Unit
Note
MTBF
MIL-HDBK-217F
3.6
Mhrs
25C, GB
Telcordia TR-NT-000332
4.2
Mhrs
Telcordia SR-332
TBD
hrs
Demonstrated
TBD
hrs
Isolation specifications
Voltage
1,500
Vdc
Input to Output
Capacitance
5,000
6,500
pF
Input to Output
Resistance
10
M
Input to Output
Agency approvals(pending)
cTVus
UL/CSA 60950, EN 60950
CE Mark
Low Voltage Directive
Mechanical parameters
See mechanical drawing, Figs.16 and 18
Weight
0.43 / 12.25
oz / g
Dimensions
Length
1.26 / 32
in / mm
Width
0.85 / 21.5
in / mm
Height
0.24 / 6
in / mm
GENERAL
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