Switchcraft A6M

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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

NBM
Bus Converter Rev 1.1 vicorpower.com
Page 1 of 26 09/2015
800 927.9474
NBM
Bus Converter
Non-Isolated, Fixed Ratio DC-DC Converter
NBM6123x46C15A6yzz
C
US
®
S
NRTL
CUS
Features
Up to 160 A continuous output current
3532 W/in
3
power density
Parallel operation for multi-kW arrays
OV, OC, UV, short circuit and thermal protection
6123 through-hole ChiP package
n 2.402” x 0.990” x 0.286”
(61.00 mm x 25.14 mm x 7.26 mm)
Typical Applications
DC Power Distribution
High End Computing Systems
Automated Test Equipment
Industrial Systems
High Density Power Supplies
Communications Systems
Transportation
Product Description
The VI Chip® Non-Isolated Bus Converter (NBM™) is a high
eciency Sine Amplitude Converter™ (SAC™), operating from
a 36 to 46 VDC primary bus to deliver a non-isolated,
ratiometric output from 12.0 to 15.3 VDC.
The NBM6123x46C15A6yzz oers low noise, fast transient
response, and industry leading eciency 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 NBM module. With a primary to
secondary K factor of 1/3, that capacitance value can be
reduced by a factor of 9x, resulting in savings of board area,
material and total system cost.
Leveraging the thermal and density benefits of Vicor’s ChiP
packaging technology, the NBM module oers 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 eciency attributes, quickly and predictably.
The NBM non-isolated topology allows operation in forward
and reverse directions and provides bidirectional protections.
However if power train is disabled by any protection, and V
SEC
is present, then voltage equal to V
SEC
minus two diode drops
will appear on primary side.
Product Ratings
V
PRI
= 42 V (36 – 46 V) P
SEC
= up to 2400 W
V
SEC
= 14 V (12.0 – 15.3 V)
(
NO LOAD)
K = 1/3
NBM
Bus Converter Rev 1.1 vicorpower.com
Page 2 of 26 09/2015
800 927.9474
NBM6123x46C15A6yzz
Typical Application
NBM6123x46C15A6yzz+ Point of Load
NBM
VAUX
EN
+V
PRI
SGND
+V
SEC
V
PRI
enable/disable
switch
FUSE
PRIMARY SECONDARY
SOURCE_RTN
C
I_NBM_ELEC
TM
POL
PGND
NBM
Bus Converter Rev 1.1 vicorpower.com
Page 3 of 26 09/2015
800 927.9474
NBM6123x46C15A6yzz
Pin Configuration
1
2
A
B
C
D
E
F
G
H
+V
PRI
+V
SEC
TOP VIEW
6123 ChiP Package
I
PGND1
PGND1
+V
SEC
+V
SEC
PGND1
+V
SEC
PGND1
+V
PRI
J
+V
PRI
K
+V
PRI
L
A’
B’
C’
D’
E’
F’
G’
H’
I’
J’
K’
L’
+V
SEC
PGND2
PGND2
+V
SEC
+V
SEC
PGND2
+V
SEC
PGND2
SGND
TM
EN
VAUX
Pin Descriptions
Pin Number Signal Name Type Function
I1, J1, K1, L1 +V
PRI
PRIMARY POWER Positive primary transformer power terminal
I’2 TM OUTPUT Temperature Monitor; Primary side referenced signals
J’2 EN INPUT Enables and disables power supply; Primary side referenced signals
K’2 VAUX OUTPUT Auxilary Voltage Source; Primary side referenced signals
L’2 SGND SIGNAL RETURN Signal return terminal only. Do not connect to PGND
A1, D1, E1, H1,
A’2, D’2, E’2, H’2
+V
SEC
SECONDARY
POWER
Positive secondary transformer power terminal
B1, C1, F1, G1
B’2, C’2, F’2, G’2
PGND*
SECONDARY
POWER RETURN
Transformer power return terminal
*For proper operation an external low impedance connection must be made between listed -PGND1 and PGND2 terminals.
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