NBM
™
in a VIA Package
Bus Converter
NBM3814x60E12A7yzz
Non-Isolated, Fixed-Ratio DC-DC Converter
Features & Benefits
•
Up to 170A continuous low voltage side current
•
Fixed transformation ratio(K) of 1/5
•
Up to 1046
W/in
3
power density
V
HI
= 54V (36 – 60V)
V
LO
= 10.8V (7.2 – 12.0V)
(
no load
)
Product Ratings
I
LO
= up to 170A
K = 1/5
•
97.8% peak efficiency
•
Bidirectional operation capability
•
Integrated ceramic capacitance filtering
•
Parallel operation for multi-kW arrays
•
OV, OC, UV, short circuit and thermal protection
•
3814 package
•
High MTBF
•
Thermally enhanced VIA™ package
Product Description
The NBM in a VIA package is a high efficiency Bus Converter,
operating from a 36 to 60V
DC
high voltage bus to deliver a non-
isolated 7.2 to 12V
DC
unregulated, low voltage.
This unique ultra-low profile module incorporates DC-DC
conversion, integrated filtering in a chassis or PCB mount
form factor.
The NBM offers low noise, fast transient response and industry
leading efficiency and power density.
Leveraging the thermal and density benefits of Vicor’s VIA
packaging technology, the NBM module offers flexible thermal
management options with very low top and bottom side thermal
impedances.
When combined with downstream Vicor DC-DC conversion
components and regulators, the NBM allows the Power Design
Engineer to employ a simple, low-profile design which will
differentiate the end system without compromising on cost or
performance metrics.
The NBM non-isolated topology allows start up and steady state
operation in forward and reverse directions. It provides
bidirectional protections. However if power train is disabled by any
protection, and V
LO
is present, then voltage equal to V
LO
minus two
diode drops will appear on high voltage side.
Size:
3.76 x 1.40 x 0.37 in
95.59 x 35.54 x 9.40 mm
Max
High
Side
Voltage
60
High
Max
Side
Low
Voltage
Side
Range
Voltage
Ratio
E
15
Max
Low
Product Grade
Side
(Case Temperature)
Current
A7
y
C = -20 to 100°C
[1]
T = -40 to 100°C
[1]
Typical Applications
•
DC Power Distribution
•
Information and Communication
Technology (ICT) Equipment
•
High End Computing Systems
•
Automated Test Equipment
•
Industrial Systems
•
High Density
Energy Systems
•
Transportation
Part Ordering Information
Product
Function
NBM
NBM =
Non-Isolated
Bus Converter
Module
[1]
Package
Length
38
Length in
Inches x 10
Package
Width
14
Width in
Inches x 10
Package
Type
x
B = Board VIA
V = Chassis VIA
Option Field
zz
00 = Chassis/Always On
04 = Short Pin/Always On
08 = Long Pin/Always On
Internal Reference
High Temperature Current Derating may apply; See Figure 1, specified thermal operating area.
NBM
™
in a VIA Package
Page 1 of 23
Rev 1.1
05/2016
vicorpower.com
800 927.9474
NBM3814x60E12A7yzz
Electrical Specifications
Specifications apply over all line and load conditions, unless otherwise noted;
Boldface
specifications apply over the temperature range of -40°C
≤
T
CASE
≤100°C
(T-Grade); All other specifications are at T
CASE
= 25ºC unless otherwise noted.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
General Powertrain High Voltage Side to Low Voltage Side Specification (Forward Direction)
HI Side Input Voltage range,
continuous
V
HI
µController
HI to LO Input Quiescent Current
V
HI_DC
V
µC_ACTIVE
I
HI_Q
V
HI_DC
voltage where µC is initialized,
(powertrain inactive)
Disabled, V
HI_DC
= 54V
T
CASE
≤
100ºC
V
HI_DC
= 54V, T
CASE
= 25ºC
HI to LO No Load Power Dissipation
P
HI_NL
V
HI_DC
= 54V
V
HI_DC
= 36V to 60V, T
CASE
= 25 ºC
V
HI_DC
= 36V to 60V
HI to LO Inrush Current Peak
DC HI Side Input Current
Transformation Ratio
LO Side Output Current (continuous)
LO Side Output Current (pulsed)
I
HI_INR_PK
I
HI_IN_DC
K
I
LO_OUT_DC
I
LO_OUT_PULSE
V
HI_DC
= 60V, C
LO_EXT
= 3000µF, R
LOAD_LO
= 20% of full
load current
T
CASE
≤
100ºC
At I
LO_OUT_DC
= 170A, T
CASE
≤
90ºC
High voltage to low voltage, K = V
LO_DC
/ V
HI_DC
, at no
load
T
CASE
≤
90°C
10ms pulse, 25% Duty cycle, I
LO_OUT_AVG
≤
50% rated
I
LOC_OUT_DC
V
HI_DC
= 54V, I
LO_OUT_DC
= 170A
HI to LO Efficiency (ambient)
ηh
AMB
ηh
HOT
ηh
20%
R
LO_COLD
HI to LO Output Resistance
R
LO_AMB
R
LO_HOT
Switching Frequency
LO Side Output Voltage Ripple
F
SW
V
LO_OUT_PP
V
HI_DC
= 36V to 60V, I
LO_OUT_DC
= 170A
V
HI_DC
= 54V, I
LO_OUT_DC
= 85A
HI to LO Efficiency (hot)
HI to LO Efficiency
(over load range)
V
HI_DC
= 54V, I
LO_OUT_DC
= 170A, T
CASE
= 90°C
34A < I
LO_OUT_DC
< 170A
V
HI_DC
= 54V, I
LO_OUT_DC
= 170A, T
CASE
= -40°C
V
HI_DC
= 54V, I
LO_OUT_DC
= 170A
V
HI_DC
= 54V, I
LO_OUT_DC
= 170A, T
CASE
= 90°C
Frequency of the LO Side Voltage Ripple = 2x F
SW
C
LO_EXT
= 0µF, I
LO_OUT_DC
= 170A, V
HI_DC
= 54V,
20MHz BW
T
CASE
≤
100ºC
96.5
95.6
97.3
96.2
95
0.5
0.8
1.1
1.02
1.1
1.3
1.7
1.07
125
400
1.5
1.8
2.0
1.12
MHz
mV
mΩ
97.8
96.5
%
%
97
%
1/5
170
200
15
50
34.4
A
V/V
A
A
8
10
7
12
12
19
14
22
A
W
36
60
15
V
V
mA
NBM
™
in a VIA Package
Page 5 of 23
Rev 1.1
05/2016
vicorpower.com
800 927.9474
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