BCM
®
Bus Converter
BCM380y475x1K2A31
®
S
C
US
C
NRTL
US
Fixed Ratio DC-DC Converter
Features
•
Up to 1200 W continuous output power
•
1876 W/in
3
power density
•
97.9% peak efficiency
•
4242 Vdc isolation
•
Parallel operation for multi-kW arrays
•
OV, OC, UV, short circuit and thermal protection
•
6123 through-hole ChiP package
Product Ratings
V
IN
= 380 V (260 – 410 V)
V
OUT
= 47.5 V (32.5 – 51.3 V)
(
NO LOAD
)
P
OUT
= up to 1200 W
K = 1/8
Product Description
The VI Chip
®
Bus Converter (BCM) is a high efficiency Sine
Amplitude Converter (SAC), operating from a 260 to 410 VDC
primary bus to deliver an isolated ratiometric output from
32.5 to 51.3 VDC.
The BCM380y475x1K2A31 offers low noise, fast transient
response, and industry leading efficiency and power density. In
addition, it provides an AC impedance beyond the bandwidth
of most downstream regulators, allowing input capacitance
normally located at the input of a POL regulator to be located at
the input of the BCM module. With a K factor of 1/8, that
capacitance value can be reduced by a factor of 64x, resulting
in savings of board area, material and total system cost.
The BCM380y475x1K2A31, combined with the D44TL1A0
Digital Supervisor and I13TL1A0 Digital Isolator, provide a
secondary referenced PMBus™ compatible telemetry and
control interface. This interface provides access to the BCM’s
internal controller configuration, fault monitoring, and other
telemetry functions.
Leveraging the thermal and density benefits of Vicor’s ChiP
packaging technology, the BCM module offers flexible thermal
management options with very low top and bottom side
thermal impedances. Thermally-adept ChiP-based power
components, enable customers to achieve low cost power
system solutions with previously unattainable system size,
weight and efficiency attributes, quickly and predictably.
n
2.494” x 0.898” x 0.286”
(63.34 mm x 22.80 mm x 7.26 mm)
•
PMBus
TM
management interface*
Typical Applications
•
380 DC Power Distribution
•
High End Computing Systems
•
Automated Test Equipment
•
Industrial Systems
•
High Density Power Supplies
•
Communications Systems
•
Transportation
*When
used with D44TL1A0 and I13TL1A0 chipset
BCM
®
Bus Converter
Page 1 of 23
Rev 1.4
05/2015
vicorpower.com
800 927.9474
BCM380y475x1K2A31
Typical Application
BCM
SER-OUT
SER-OUT
enable/disable
switch
ENABLE
TRIM
EN
SER-IN
SER-IN
R
FUSE
+IN
V
IN
I_PRM_DAMP
PRM_SGND
PRM
VAUX
REF/
REF_EN
VT
VC
IFB
R
+IN
L
I_PRM_FLT
O_PRM_DAMP
VTM
Adaptive Loop Temperature Feedback
VTM Start Up Pulse
V
TM
VC
PC
C
+IN
L
O_PRM_FLT
O_VTM_CER
LOAD
AL
SHARE/
CONTROL NODE
R
TRIM_PRM
OUT
+OUT
enable/disable
switch
SGND
R
AL_PRM
+OUT
R
I_PRM_CER
+OUT
C
O_PRM_CER
C
I_BCM_ELEC
–IN
SOURCE_RTN
PRIMARY
–OUT
SECONDARY
–IN
SGND
–OUT
–IN
PRIMARY
–OUT
SECONDARY
LOAD_RTN
ISOLATION BOUNDRY
ISOLATION BOUNDRY
Digital Isolator
NC
SER-IN
PRI_OUT_B
SER-OUT
PRI_IN_C
SEC_OUT_C
SEC_IN_B
PRI_OUT_A
SEC_IN_A
Digital Supervisor
PRM_SGND
Host μC
VDDB
t
+
V
TX
VDD
–
EXT
RX
SGND
PRI_COM
SEC_COM
SGND
PMBus
PMBus
SGND
SGND
SGND
BCM380y475x1K2A31 + PRM + VTM, Adaptive Loop Configuration
BCM
SER-OUT
SER-OUT
enable/disable
switch
V
SGND
REF
IN
OUT
ENABLE
TRIM
SGND
VAUX
GND
Voltage Sense and Error Amplifier
(Differential)
EN
SER-IN
enable/disable
switch
REF/
REF_EN
VT
VC
IFB
V+
VOUT
V–
VTM
SGND
AL
SHARE/
CONTROL NODE
TM
VTM Start up Pulse
+OUT
Voltage Reference with Soft Start
VC
PC
SER-IN
R
PRM_SGND
I_PRM_DAMP
+IN
+IN
–IN
SGND
R
O_PRM_DAMP
+IN
C
O_VTM_CER
LOAD
FUSE
+IN
V
IN
C
+OUT
L
+OUT
External Current Sense
I_BCM_ELEC
I_PRM_FLT
C
L
I_PRM_ELEC
–IN
O_PRM_FLT
C
O_PRM_CER
–IN
PRIMARY
–OUT
SECONDARY
–IN
PRIMARY
–OUT
SECONDARY
SGND
SOURCE_RTN
–OUT
ISOLATION BOUNDRY
ISOLATION BOUNDRY
Digital Isolator
NC
SER-IN
PRI_OUT_B
SER-OUT
PRI_IN_C
SEC_OUT_C
SEC_IN_B
PRI_OUT_A
SEC_IN_A
Digital Supervisor
PRM_SGND
Host μC
VDDB
t
+
V
TX
VDD
–
EXT
RX
SGND
PRI_COM
SEC_COM
SGND
PMBus
PMBus
SGND
SGND
SGND
BCM380y475x1K2A31 + PRM + VTM, Remote Sense Configuration
BCM
®
Bus Converter
Page 2 of 23
Rev 1.4
05/2015
vicorpower.com
800 927.9474
Voltage Sense
PRM
REF 3312
SGND
BCM380y475x1K2A31
Pin Configuration
1
TOP VIEW
2
+IN
A
A’
+OUT
SER-OUT
B
B’
-OUT
EN
C
C’
+OUT
SER-IN
D
-IN
E
D’
-OUT
6123 ChiP Package
Pin Descriptions
Pin Number
A1
B1
C1
D1
E1
A’2, C’2
B’2, D’2
Signal Name
+IN
SER-OUT
EN
SER-IN
-IN
+OUT
-OUT
Type
INPUT POWER
OUTPUT
INPUT
INPUT
INPUT POWER
RETURN
OUTPUT POWER
OUTPUT POWER
RETURN
Positive input power terminal
Function
UART transmit pin; Primary side referenced signals
Enables and disables power supply; Primary side referenced signals
UART receive pin; Primary side referenced signals
Negative input power terminal
Positive output power terminal
Negative output power terminal
BCM
®
Bus Converter
Page 3 of 23
Rev 1.4
05/2015
vicorpower.com
800 927.9474
BCM380y475x1K2A31
Part Ordering Information
Device
BCM
Input Voltage
Range
380
Package Type
y
Output
Voltage x 10
475
Temperature
Grade
x
T = -40 to 125°C
M = -55 to 125°C
Output
Power
1K2
Revision
A
Package
Size
3
Version
1
BCM = BCM
380 = 260 to 410 V
P = ChiP Through Hole
475 = 47.5 V
1K2 = 1,200 W
A
3 = 6123
1
All products shipped in JEDEC standard high profile (0.400” thick) trays (JEDEC Publication 95, Design Guide 4.10).
Standard Models
Part Number
BCM380
P
475
T
1K2A31
BCM380
P
475
M
1K2A31
V
IN
260 to 410 V
260 to 410 V
Package Type
ChiP Through Hole
ChiP Through Hole
V
OUT
47.5 V
32.5 to 51.3 V
47.5 V
32.5 to 51.3 V
Temperature
-40°C to 125°C
-55°C to 125°C
Power
1,200 W
1,200 W
Package Size
6123
6123
Absolute Maximum Ratings
The absolute maximum ratings below are stress ratings only. Operation at or beyond these maximum ratings can cause permanent damage to the device.
Parameter
+IN to –IN
V
IN
slew rate (operational)
Isolation voltage, input to output
+OUT to –OUT
SER-OUT to –IN
EN to –IN
SER-IN to –IN
Dielectric test applied to 100% production units
-1
-0.3
-0.3
-0.3
Comments
Min
-1
Max
480
1000
4242
60
4.6
5.5
4.6
Unit
V
V/ms
V
V
V
V
V
BCM
®
Bus Converter
Page 4 of 23
Rev 1.4
05/2015
vicorpower.com
800 927.9474
BCM380y475x1K2A31
Electrical Specifications
Specifications apply over all line and load conditions, unless otherwise noted;
Boldface
specifications apply over the temperature range of -40°C
≤
T
INTERNAL
≤
125°C (T-Grade); All other specifications are at T
INTERNAL
= 25ºC unless otherwise noted.
Attribute
Symbol
Conditions / Notes
Powertrain
Input voltage range, continuous
Input voltage range, transient
V
IN
_
DC
V
IN
_
TRANS
Full current or power supported, 50 ms max,
10% duty cycle max
V
IN
µController Active
Quiescent current
V
µC_ACTIVE
I
Q
V
IN
voltage where µC is initialized,
(ie VAUX = Low, powertrain inactive)
Disabled, EN Low, V
IN
= 380 V
T
INTERNAL
≤
100ºC
V
IN
= 380 V, T
INTERNAL
= 25ºC
No load power dissipation
P
NL
V
IN
= 380 V
V
IN
= 260 V to 410 V, T
INTERNAL
= 25ºC
V
IN
= 260 V to 410 V
Inrush current peak
DC input current
Transformation ratio
Output power (continuous)
Output power (pulsed)
Output current (continuous)
Output current (pulsed)
I
INR
_
P
I
IN
_
DC
K
P
OUT_DC
P
OUT_PULSE
I
OUT_DC
I
OUT_PULSE
10 ms pulse, 25% Duty cycle, I
TOTAL
= 50% rated I
OUT_DC
V
IN
= 380 V, I
OUT
= 25.7 A
V
IN
= 260 V to 410 V, I
OUT
= 25.7 A
V
IN
= 380 V, I
OUT
= 12.85 A
Efficiency (hot)
Efficiency (over load range)
V
IN
= 380 V, I
OUT
= 25.7 A, T
INTERNAL
= 100°C
5.14 A < I
OUT
< 25.7 A, T
INTERNAL
≤
100ºC
V
IN
= 380 V, I
OUT
= 25.7 A, T
INTERNAL
= -40°C
V
IN
= 380 V, I
OUT
= 25.7 A
V
IN
= 380 V, I
OUT
= 25.7 A, T
INTERNAL
= 100°C
Frequency of the Output Voltage Ripple = 2x F
SW
C
OUT
= 0 F, I
OUT
= 25.7 A, V
IN
= 380 V,
Output voltage ripple
V
OUT
_
PP
20 MHz BW
T
INTERNAL
≤
100ºC
Frequency 2.5 MHz (double switching frequency),
Simulated lead model
Frequency 2.5 MHz (double switching frequency),
Simulated lead model
Reduces the need for input decoupling
inductance in BCM arrays
Effective value at 380 V
IN
300
6.7
1.3
1.2
0.37
nH
nH
µH
µF
97.1
96.4
97.2
96.5
92
13
21
30
1.12
16.7
24.2
35
1.18
195
mV
23
31
40
1.23
MHz
mΩ
97.7
97
%
%
97.6
%
10 ms pulse, 25% Duty cycle, P
TOTAL
= 50% rated P
OUT_DC
V
IN
= 410 V, C
OUT
= 100 µF,
R
LOAD
= 25% of full load current
T
INTERNAL
≤
100ºC
At P
OUT
= 1200 W, T
INTERNAL
≤
100ºC
K = V
OUT
/ V
IN
, at no load
1/8
1200
1500
25.7
32.2
4
10
3.5
A
V/V
W
W
A
A
5.9
9.8
2
4
12
16
15
20
A
W
mA
120
V
260
260
410
410
V
V
Min
Typ
Max
Unit
Efficiency (ambient)
h
AMB
h
HOT
h
20%
R
OUT
_
COLD
R
OUT
_
AMB
R
OUT
_
HOT
F
SW
Output resistance
Switching frequency
Input inductance (parasitic)
Output inductance (parasitic)
Input Series inductance (internal)
Effective Input capacitance (internal)
L
IN
_
PAR
L
OUT
_
PAR
L
IN_INT
C
IN
_
INT
BCM
®
Bus Converter
Page 5 of 23
Rev 1.4
05/2015
vicorpower.com
800 927.9474
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