BCM
®
Bus Converter
BCM384y120x1K5AC1
®
S
C
US
C
NRTL
US
Fixed Ratio DC-DC Converter
Features
•
Up to 1500 W continuous output power
•
2208 W/in
3
power density
•
97.4% peak efficiency
•
4242 Vdc isolation
•
Parallel operation for multi-kW arrays
•
OV, OC, UV, short circuit and thermal protection
•
2361 through-hole ChiP package
Product Ratings
V
IN
= 384 V (260 – 410 V)
V
OUT
= 12 V (8.1 – 12.8 V)
(
NO LOAD
)
P
OUT
= up to 1500 W
K = 1/32
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
8.1 to 12.8 VDC.
The BCM384y120x1K5AC1 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 1/32, that
capacitance value can be reduced by a factor of 1024x, resulting
in savings of board area, material and total system cost.
The BCM384y120x1K5AC1, 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
2.402” x 0.990” x 0.286”
(61.00 mm x 25.14 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
BCM384y120x1K5AC1
Typical Application
BCM
SER-OUT
SER-OUT
EN
SER-IN
SER-IN
enable/disable
switch
FUSE
+IN
V
IN
+OUT
POL
C
I_BCM_ELEC
–IN
SOURCE_RTN
PRIMARY
–OUT
SECONDARY
ISOLATION BOUNDRY
Digital Isolator
NC
SER-IN
PRI_OUT_B
SER-OUT
PRI_IN_C
SEC_OUT_C
RXD
SEC_IN_B
TXD
PRI_OUT_A
SEC_IN_A
VDDB
Host μC
t
+
V
Digital
Supervisor
VDD
–
EXT
SGND
PRI_COM
SEC_COM
SGND
PMBus
PMBus
SGND
SGND
SGND
BCM384y120x1K5AC1 at point of load
BCM
®
Bus Converter
Page 2 of 23
Rev 1.4
05/2015
vicorpower.com
800 927.9474
BCM384y120x1K5AC1
Pin Configuration
1
+OUT
A
TOP VIEW
2
A’
+OUT
-OUT
B
B’
-OUT
-OUT
C
C’
-OUT
+OUT
D
D’
+OUT
+OUT
E
E’
+OUT
-OUT
F
F’
-OUT
-OUT
G
G’
-OUT
+OUT
+IN
+IN
+IN
+IN
H
I
J
K
L
H’
+OUT
I’
J’
SER-OUT
EN
K’
SER-IN
L’
-IN
2361 ChiP Package
Pin Descriptions
Pin Number
I1, J1, K1, L1
I’2
J’2
K’2
L’1
A1, D1, E1,
H1, A’2, D’2,
E’2, H’2
B1, C1, F1,
G1, B’2, C’2,
F’2, G’2
BCM
®
Bus Converter
Page 3 of 23
Signal Name
+IN
SER-OUT
EN
SER-IN
-IN
+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
-OUT
Negative output power terminal
Rev 1.4
05/2015
vicorpower.com
800 927.9474
BCM384y120x1K5AC1
Part Ordering Information
Device
BCM
Input Voltage
Range
384
Package Type
y
Output
Voltage x 10
120
Temperature
Grade
x
T = -40 to 125°C
M = -55 to 125°C
Output
Power
1K5
Revision
A
Package
Size
C
Version
1
BCM = BCM
384 = 260 to 410 V
P = ChiP Through Hole
120 = 12 V
1K5 = 1,500 W
A
C = 2361
1
All products shipped in JEDEC standard high profile (0.400” thick) trays (JEDEC Publication 95, Design Guide 4.10).
Standard Models
Part Number
BCM384
P
120
T
1K5AC1
BCM384
P
120
M
1K5AC1
V
IN
260 to 410 V
260 to 410 V
Package Type
ChiP Through Hole
ChiP Through Hole
V
OUT
12 V
8.1 to 12.8 V
12 V
8.1 to 12.8 V
Temperature
-40°C to 125°C
-55°C to 125°C
Power
1,500 W
1,500 W
Package Size
2361
2361
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
Comments
Min
-1
Max
480
1000
4242
15
4.6
5.5
4.6
Unit
V
V/ms
V
V
V
V
V
-0.3
-0.3
BCM
®
Bus Converter
Page 4 of 23
Rev 1.4
05/2015
vicorpower.com
800 927.9474
BCM384y120x1K5AC1
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
Input Voltage Slew Rate
Quiescent current
V
µC_ACTIVE
dV
IN
/dt
I
Q
V
IN
voltage where µC is initialized,
(ie VAUX = Low, powertrain inactive)
V
IN_UVLO-
≤
V
IN
≤
V
IN_OVLO+
Disabled, EN Low, V
IN
= 384 V
T
INTERNAL
≤
100ºC
V
IN
= 384 V, T
INTERNAL
= 25ºC
No load power dissipation
P
NL
V
IN
= 384 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
= % rated I
OUT_DC
V
IN
= 384 V, I
OUT
= 125 A
Efficiency (ambient)
96.2
95.2
96.5
95.8
90
1.10
1.50
1.80
0.95
1.50
1.85
2.30
1.00
195
mV
250
7
0.64
0.56
0.37
nH
nH
µH
µF
1.80
2.30
2.70
1.05
MHz
mΩ
97.4
97
%
%
97
%
V
IN
= 260 V to 410 V, I
OUT
= 125 A
V
IN
= 384 V, I
OUT
= 62.5 A
Efficiency (hot)
Efficiency (over load range)
V
IN
= 384 V, I
OUT
= 125 A, T
INTERNAL
= 100°C
25 A < I
OUT
< 125 A, T
INTERNAL
≤
100ºC
V
IN
= 384 V, I
OUT
= 125 A, T
INTERNAL
= -40°C
V
IN
= 384 V, I
OUT
= 125 A
V
IN
= 384 V, I
OUT
= 125 A, T
INTERNAL
= 100°C
Frequency of the Output Voltage Ripple = 2x F
SW
C
OUT
= 0 F, I
OUT
= 125 A, V
IN
= 384 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 384 V
IN
10 ms pulse, 25% Duty cycle, P
TOTAL
= % rated P
OUT_DC
V
IN
= 410 V, C
OUT
= 1000 µF,
R
LOAD
= 25% of full load current
T
INTERNAL
≤
100ºC
At P
OUT
= 1500 W, T
INTERNAL
≤
100ºC
K = V
OUT
/ V
IN
, at no load
1/32
1500
2000
125
167
10
15
4.1
A
V/V
W
W
A
A
5.9
11
0.001
2
4
17
25
19
27
A
W
1000
V/ms
mA
130
V
260
260
410
410
V
V
Min
Typ
Max
Unit
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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