BCM
®
Bus Converter
BCM384x120y800ACz
®
S
C
US
C
NRTL
US
Fixed Ratio DC-DC Converter
Features
•
Up to 800 W continuous output power
•
1177 W/in
3
power density
•
97.4% peak efficiency
•
4,242 Vdc isolation
•
Parallel operation for multi-kW arrays
•
OV, OC, UV, short circuit and thermal protection
•
2361 through-hole ChiP package
Product Ratings
V
PRI
= 384 V (260 – 410 V)
V
SEC
= 12 V (8.1 – 12.8 V)
(
NO LOAD
)
P
SEC
= up to 800 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 BCM384x120y800ACz 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 primary side of the BCM module. With a primary to
secondary 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.
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.
This product can operate in reverse direction, at full rated
power, after being previously started in forward direction.
n
2.402” x 0.990” x 0.286”
(61.00 mm x 25.14 mm x 7.26 mm)
Typical Applications
•
380 DC Power Distribution
•
High End Computing Systems
•
Automated Test Equipment
•
Industrial Systems
•
High Density Power Supplies
•
Communications Systems
•
Transportation
BCM
®
Bus Converter
Page 1 of 25
Rev 1.2
07/2015
vicorpower.com
800 927.9474
BCM384x120y800ACz
Typical Application
BCM
TM
EN
enable/disable
switch
VAUX
FUSE
+V
PRI
V
PRI
+V
SEC
POL
C
I_BCM_ELEC
–V
PRI
SOURCE_RTN
–V
SEC
SECONDARY
PRIMARY
ISOLATION BOUNDRY
BCM384x120y800ACz+ Point of Load
BCM
®
Bus Converter
Page 2 of 25
Rev 1.2
07/2015
vicorpower.com
800 927.9474
BCM384x120y800ACz
Pin Configuration
1
+V
SEC
A
TOP VIEW
2
A’
+V
SEC
–V
SEC1
–V
SEC1
+V
SEC
B
B’
–V
SEC2
C’
–V
SEC2
C
D
D’
+V
SEC
+V
SEC
E
E’
+V
SEC
–V
SEC1
–V
SEC1
F
F’
–V
SEC2
G
G’
–V
SEC2
+V
SEC
+V
PRI
+V
PRI
+V
PRI
+V
PRI
H
I
J
K
L
H’
+V
SEC
I’
J’
TM
EN
K’
VAUX
L’
–V
PRI
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
Signal Name
+V
PRI
TM
EN
VAUX
-V
PRI
+V
SEC
-V
SEC*
Type
PRIMARY POWER
OUTPUT
INPUT
OUTPUT
PRIMARY POWER
RETURN
SECONDARY POWER
SECONDARY POWER
RETURN
Function
Positive primary transformer power terminal
Temperature Monitor; Primary side referenced signals
Enables and disables power supply; Primary side referenced
signals
Auxilary Voltage Source; Primary side referenced signals
Negative Primary transformer power terminal
Positive secondary transformer power terminal
Negative secondary transformer power terminal
*For proper operation an external low impedance connection must be made between listed -V
SEC1
and -V
SEC2
terminals.
BCM
®
Bus Converter
Page 3 of 25
Rev 1.2
07/2015
vicorpower.com
800 927.9474
BCM384x120y800ACz
Part Ordering Information
Device
BCM
Input Voltage
Range
384
Package Type
x
P=
ChiP Through Hole
Output
Voltage x 10
120
Temperature
Grade
y
T = -40 to 125°C
M = -55 to 125°C
Output
Power
800
Revision
A
Package
Size
C
Version
z
0 = Analog
R = Reversible
BCM = BCM
384 = 260 to 410 V
120 = 12 V
800 = 800 W
A
C = 2361
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
800AC0
BCM384
P
120
M
800AC0
BCM384
P
120
T
800ACR
BCM384
P
120
M
800ACR
V
IN
260 to 410 V
260 to 410 V
260 to 410 V
260 to 410 V
Package Type
ChiP Through Hole
ChiP Through Hole
ChiP Through Hole
ChiP Through Hole
V
OUT
12 V
8.1 to 12.8 V
12 V
8.1 to 12.8 V
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
-40°C to 125°C
-55°C to 125°C
Power
800 W
800 W
800 W
800 W
Package Size
2361
2361
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
+V
PRI_DC
to –V
PRI_DC
V
PRI_DC
or V
SEC_DC
slew rate
(operational)
+V
SEC_DC
to –V
SEC_DC
TM to –V
PRI_DC
EN to –V
PRI_DC
VAUX to –V
PRI_DC
-0.3
-1
Comments
Min
-1
Max
480
1
15
4.6
5.5
4.6
Unit
V
V/µs
V
V
V
V
BCM
®
Bus Converter
Page 4 of 25
Rev 1.2
07/2015
vicorpower.com
800 927.9474
BCM384x120y800ACz
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
Min
Typ
Max
Unit
General Powetrain PRIMARY to SECONDARY Specification (Forward Direction)
Primary Input Voltage range,
continuous
V
PRI
µController
PRI to SEC Input Quiescent Current
V
PRI_DC
V
µC_ACTIVE
I
PRI_Q
V
PRI_DC
voltage where µC is initialized,
(ie VAUX = Low, powertrain inactive)
Disabled, EN Low, V
PRI_DC
= 384 V
T
INTERNAL
≤
100ºC
V
PRI_DC
= 384 V, T
INTERNAL
= 25ºC
PRI to SEC No Load Power
Dissipation
P
PRI_NL
V
PRI_DC
= 384 V
V
PRI_DC
= 260 V to 410 V, T
INTERNAL
= 25 ºC
V
PRI_DC
= 260 V to 410 V
PRI to SEC Inrush Current Peak
DC Primary Input Current
Transformation Ratio
Secondary Output Power
(continuous)
Secondary Output Power (pulsed)
Secondary Output Current
(continuous)
Secondary Output Current (pulsed)
I
PRI_INR_PK
I
PRI_IN_DC
K
P
SEC_OUT_DC
P
SEC_OUT_PULSE
I
SEC_OUT_DC
I
SEC_OUT_PULSE
10 ms pulse, 25% Duty cycle, I
SEC_OUT_AVG
= 50% rated
I
SEC_OUT_DC
V
PRI_DC
= 384 V, I
SEC_OUT_DC
= 68 A
PRI to SEC Efficiency (ambient)
η
AMB
η
HOT
η
20%
R
SEC_COLD
PRI to SEC Output Resistance
R
SEC_AMB
R
SEC_HOT
Switching Frequency
Secondary Output Voltage Ripple
Primary Input Leads Inductance
(Parasitic)
Secondary Output Leads Inductance
(Parasitic)
F
SW
V
SEC_OUT_PP
V
PRI_DC
= 260 V to 410 V, I
SEC_OUT_DC
= 68 A
V
PRI_DC
= 384 V, I
SEC_OUT_DC
= 34 A
PRI to SEC Efficiency (hot)
PRI to SEC Efficiency
(over load range)
V
PRI_DC
= 384 V, I
SEC_OUT_DC
= 68 A
14 A < I
SEC_OUT_DC
< 68 A
V
PRI_DC
= 384 V, I
SEC_OUT_DC
= 68 A, T
INTERNAL
= -40°C
V
PRI_DC
= 384 V, I
SEC_OUT_DC
= 68 A
V
PRI_DC
= 384 V, I
SEC_OUT_DC
= 384 A, T
INTERNAL
= 100°C
Frequency of the Output Voltage Ripple = 2x FSW
C
SEC_EXT
= 0
µF,
I
SEC_OUT_DC
= 68 A, V
PRI_DC
= 384 V,
20 MHz BW
T
INTERNAL
≤
100ºC
L
PRI_IN_LEADS
L
SEC_OUT_LEADS
Frequency 2.5 MHz (double switching frequency),
Simulated lead model
Frequency 2.5 MHz (double switching frequency),
Simulated lead model
7
0.64
96.2
95.7
96.3
96
90
1.0
1.6
2.3
0.97
1.65
2.3
2.9
1.03
210
300
nH
nH
2.2
2.9
3.4
1.09
MHz
mV
mΩ
97
97
%
%
97.2
%
V
PRI_DC
= 410 V, C
SEC_EXT
= 1000
µF,
R
LOAD_SEC
= 50%
of full load current
T
INTERNAL
≤
100ºC
At I
SEC_OUT_DC
= 68 A, T
INTERNAL
≤
100ºC
Primary to secondary, K = V
SEC_DC
/ V
PRI_DC
, at no load
Specified at V
PRI_DC
= 410 V
Specified at V
PRI_DC
= 410 V; 10 ms pulse, 25% Duty
cycle, P
SEC_AVG
= 50% rated P
SEC_OUT_DC
1/32
800
1100
68
91
10
15
2.2
A
V/V
W
W
A
A
5
9.3
2
4
13
20
16
22
A
W
260
410
130
V
V
mA
BCM
®
Bus Converter
Page 5 of 25
Rev 1.2
07/2015
vicorpower.com
800 927.9474
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