BCM
®
Bus Converter
BCM400x500y1K8A3z
®
S
C
US
C
NRTL
US
Fixed Ratio DC-DC Converter
Features
•
Up to 1750 W continuous output power
•
2735 W/in
3
power density
•
98% peak efficiency
•
4,242 Vdc isolation
•
Parallel operation for multi-kW arrays
•
OV, OC, UV, short circuit and thermal protection
•
6123 through-hole ChiP package
Product Ratings
V
PRI
= 400 V (260 – 410 V)
V
SEC
= 50 V (32.5 – 51.3 V)
(
NO LOAD
)
P
SEC
= up to 1750 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 BCM400x500y1K8A3z 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 1/8, that capacitance value can be
reduced by a factor of 64x, 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
2.494” x 0.898” x 0.286”
(63.34 mm x 22.80 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 1.4
07/2015
vicorpower.com
800 927.9474
BCM400x500y1K8A3z
Typical Application
BCM
TM
enable/disable
switch
ENABLE
TRIM
EN
AL
PRM
VAUX
REF/
REF_EN
VT
VC
IFB
R
SGND
VTM
Adaptive Loop Temperature Feedback
VTM Start Up Pulse
V
TM
VC
PC
O_PRM_DAMP
OUT
+OUT
enable/disable
switch
SGND
SHARE/
CONTROL NODE
R
TRIM_PRM
R
VAUX
R
I_PRM_DAMP
AL_PRM
C
+IN
O_VTM_CER
LOAD
FUSE
+V
PRI
V
PRI
+V
SEC
+IN
L
I_PRM_FLT
+OUT
L
O_PRM_FLT
C
I_BCM_ELEC
R
I_PRM_CER
C
O_PRM_CER
–V
PRI
SOURCE_RTN
PRIMARY
–V
SEC
SECONDARY
–IN
SGND
–OUT
–IN
PRIMARY
–OUT
SECONDARY
LOAD_RTN
ISOLATION BOUNDRY
ISOLATION BOUNDRY
SGND
BCM400x500y1K8A3z + PRM + VTM, Adaptive Loop Configuration
BCM
PRM
TM
enable/disable
switch
REF 3312
IN
OUT
V
REF
SGND
SGND
ENABLE
TRIM
SGND
VAUX
GND
Voltage Sense and Error Amplifier
(Differential)
EN
AL
SHARE/
CONTROL NODE
REF/
REF_EN
VT
VC
IFB
V+
VOUT
V–
VTM
SGND
TM
VTM Start up Pulse
+OUT
Voltage Reference with Soft Start
enable/disable
switch
VC
PC
VAUX
R
SGND
I_PRM_DAMP
+IN
+IN
–IN
SGND
R
O_PRM_DAMP
+IN
C
O_VTM_CER
LOAD
FUSE
+V
PRI
+V
SEC
–V
SEC
SECONDARY
SGND
+OUT
External Current Sense
V
PRI
SOURCE_RTN
C
I_BCM_ELEC
L
I_PRM_FLT
C
L
I_PRM_ELEC
–IN
O_PRM_FLT
C
O_PRM_CER
–IN
PRIMARY
–OUT
SECONDARY
–V
PRI
PRIMARY
SGND
–OUT
ISOLATION BOUNDRY
ISOLATION BOUNDRY
BCM400x500y1K8A3z + PRM + VTM, Remote Sense Configuration
BCM
®
Bus Converter
Page 2 of 25
Rev 1.4
07/2015
vicorpower.com
800 927.9474
Voltage Sense
BCM400x500y1K8A3z
Pin Configuration
1
TOP VIEW
2
+V
PRI
A
A’
+V
SEC
TM
B
B’
–V
SEC
EN
C
C’
+V
SEC
VAUX
D
–V
PRI
E
D’
–V
SEC
6123 ChiP Package
Pin Descriptions
Pin Number
A1
B1
C1
D1
E1
A’2, C’2
B’2, D’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
Positive primary power terminal
Function
Temperature Monitor; Primary side referenced signals
Enables and disables power supply; Primary side referenced signals
Auxilary Voltage Source; Primary side referenced signals
Negative primary power terminal
Positive secondary power terminal
Negative secondary power terminal
BCM
®
Bus Converter
Page 3 of 25
Rev 1.4
07/2015
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800 927.9474
BCM400x500y1K8A3z
Part Ordering Information
Device
BCM
Input Voltage
Range
400
Package Type
x
P=
ChiP Through Hole
Output
Voltage x 10
500
Temperature
Grade
y
T = -40 to 125°C
M = -55 to 125°C
Output
Power
1K8
Revision
A
Package
Size
3
Version
z
0 = Analog
R = Reversible
BCM = BCM
400 = 260 to 410 V
500 = 50 V
1K8 = 1,750 W
A
3 = 6123
All products shipped in JEDEC standard high profile (0.400” thick) trays (JEDEC Publication 95, Design Guide 4.10).
Standard Models
Part Number
BCM400
P
500
T
1K8A30
BCM400
P
500
M
1K8A30
BCM400
P
500
T
1K8A3R
BCM400
P
500
M
1K8A3R
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
50 V
32.5 to 51.3 V
50 V
32.5 to 51.3 V
50 V
32.5 to 51.3 V
50 V
32.5 to 51.3 V
Temperature
-40°C to 125°C
-55°C to 125°C
-40°C to 125°C
-55°C to 125°C
Power
1,750 W
1,750 W
1,750 W
1,750 W
Package Size
6123
6123
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
+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
60
4.6
5.5
4.6
Unit
V
V/µs
V
V
V
V
BCM
®
Bus Converter
Page 4 of 25
Rev 1.4
07/2015
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800 927.9474
BCM400x500y1K8A3z
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
= 400 V
T
INTERNAL
≤
100ºC
V
PRI_DC
= 400 V, T
INTERNAL
= 25ºC
PRI to SEC No Load Power
Dissipation
P
PRI_NL
V
PRI_DC
= 400 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
= 400 V, I
SEC_OUT_DC
= 35 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
= 35 A
V
PRI_DC
= 400 V, I
SEC_OUT_DC
= 17.5 A
PRI to SEC Efficiency (hot)
PRI to SEC Efficiency
(over load range)
V
PRI_DC
= 400 V, I
SEC_OUT_DC
= 35 A
7 A < I
SEC_OUT_DC
< 35 A
V
PRI_DC
= 400 V, I
SEC_OUT_DC
= 35 A, T
INTERNAL
= -40°C
V
PRI_DC
= 400 V, I
SEC_OUT_DC
= 35 A
V
PRI_DC
= 400 V, I
SEC_OUT_DC
= 400 A, T
INTERNAL
= 100°C
Frequency of the Output Voltage Ripple = 2x FSW
C
SEC_EXT
= 0
µF,
I
SEC_OUT_DC
= 35 A, V
PRI_DC
= 400 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
6.7
1.3
96.9
95.7
97.5
96.3
92
12
16
24
1.05
16
22.6
31
1.10
250
350
nH
nH
20
33
39
1.14
MHz
mV
mΩ
98
96.8
%
%
97.4
%
V
PRI_DC
= 410 V, C
SEC_EXT
= 100
µF,
R
LOAD_SEC
= 50% of
full load current
T
INTERNAL
≤
100ºC
At I
SEC_OUT_DC
= 35 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
1/8
1750
2000
35
40
6
12
4.5
A
V/V
W
W
A
A
6
10
2
4
14
21
15
22
A
W
260
410
120
V
V
mA
BCM
®
Bus Converter
Page 5 of 25
Rev 1.4
07/2015
vicorpower.com
800 927.9474
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