NBM
™
Bus Converter
NBM6123x46C15A6yzz
®
S
C
US
C
NRTL
US
Non-Isolated, Fixed Ratio DC-DC Converter
Features & Benefits
•
Up to 160A continuous secondary current
•
Up to 3600W/in
3
power density
•
98.2% peak efficiency
•
Parallel operation for multi-kW arrays
•
OV, OC, UV, short circuit and thermal protection
•
6123 through-hole ChiP™ package
■
■
2.402 x 0.990 x 0.284in
(61.00 x 25.14 x 7.21mm)
•
Bidirectional start up and steady state operation
Product Ratings
V
PRI
= 42V (36 – 46V)
V
SEC
= 14V (12.0 – 15.3V)
(
no load
)
I
SEC
= up to 160A
K = 1/3
Product Description
The NBM6123x46C15A6yzz is a high efficiency Non-Isolated Bus
Converter, operating from a 36 – 46V
DC
primary bus to deliver a
non-isolated, ratiometric secondary voltage from 12.0 – 15.3V
DC
.
The NBM6123x46C15A6yzz 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 NBM. 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 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.
The NBM non-isolated topology allows start up and steady
state operation in forward and reverse directions and provides
bidirectional protections. However if the power train is disabled
by any protection and V
SEC
is present, then a voltage equal to V
SEC
minus two diode drops will appear on the primary side.
Typical Applications
•
DC Power Distribution
•
High End Computing Systems
•
Automated Test Equipment
•
Industrial Systems
•
High Density Power Supplies
•
Communications Systems
•
Transportation
NBM
™
Bus Converter
Page 1 of 26
Rev 1.6
11/2017
NBM6123x46C15A6yzz
Typical Applications
NBM
TM
EN
enable/disable
switch
VAUX
FUSE
+V
PRI
+V
SEC
SGND
V
PRI
PGND
SECONDARY
POL
PRIMARY
C
I_NBM_ELEC
SOURCE_RTN
NBM6123x46C15A6yzz + Point of Load
NBM
™
Bus Converter
Page 2 of 26
Rev 1.6
11/2017
NBM6123x46C15A6yzz
Pin Configuration
1
+V
SEC
PGND1
PGND1
+V
SEC
+V
SEC
PGND1
PGND1
+V
SEC
+V
PRI
+V
PRI
+V
PRI
+V
PRI
A
B
C
D
E
F
G
H
I
J
K
L
TOP VIEW
2
A’
+V
SEC
B’
PGND2
C’
PGND2
D’
+V
SEC
E’
F’
+V
SEC
PGND2
G’
PGND2
H’
+V
SEC
I’
J’
TM
EN
K’
VAUX
L’
SGND
6123 ChiP Package
Pin Descriptions
Pin Number
I1, J1, K1, L1
I’2
J’2
K’2
L’2
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
SGND
+V
SEC
PGND *
Type
PRIMARY POWER
OUTPUT
INPUT
OUTPUT
SIGNAL RETURN
SECONDARY
POWER
POWER RETURN
Function
Positive primary auto-transformer power terminal
Temperature Monitor; Primary side referenced signals
Enables and disables power supply; Primary side referenced signals
Auxiliary Voltage Source; Primary side referenced signals
Signal return terminal only. Do not connect to PGND
Positive secondary auto-transformer power terminal
Common negative primary and secondary auto-transformer power return terminal
* For proper operation an external low impedance connection must be made between listed -PGND1 and PGND2 terminals.
NBM
™
Bus Converter
Page 3 of 26
Rev 1.6
11/2017
NBM6123x46C15A6yzz
Part Ordering Information
Product
Function
NBM
Package
Size
6123
Package
Mounting
x
Max Primary
Input Voltage
46
Range
Identifier
C
Max
Secondary
Voltage
15
Secondary
Output
Current
A6
Temperature
Grade
y
Option
zz
00
= Analog Ctrl
Non-isolated
Bus Converter
Module
61 = L
23 = W
T
= TH
S
= SMT
46V
36 – 46V
15V
No Load
160A
T
= –40°C to 125°C
M
= –55°C to 125°C
01
= PMBus Ctrl
0R
= Reversible Analog Ctrl
0P
= Reversible PMBus Ctrl
All products shipped in JEDEC standard high profile (0.400” thick) trays (JEDEC Publication 95, Design Guide 4.10).
Standard Models
Product
Function
NBM
Package
Size
6123
Package
Mounting
T
Max Primary
Input Voltage
46
Range
Identifier
C
Max
Secondary
Voltage
15
Secondary
Output
Current
A6
Temperature
Grade
T
Option
0R
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
60
1
20
4.6
5.5
4.6
Unit
V
V/µs
V
V
V
V
NBM
™
Bus Converter
Page 4 of 26
Rev 1.6
11/2017
NBM6123x46C15A6yzz
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 Powertrain 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,
(i.e., VAUX = low, powertrain inactive)
Disabled, EN low, V
PRI_DC
= 42V
T
INTERNAL
≤
100ºC
V
PRI_DC
= 42V, T
INTERNAL
= 25ºC
PRI to SEC No Load
Power Dissipation
P
PRI_NL
V
PRI_DC
= 42V
V
PRI_DC
= 36 – 46V, T
INTERNAL
= 25 ºC
V
PRI_DC
= 36 – 46V
PRI to SEC Inrush Current Peak
DC Primary Input Current
Transformation Ratio
Secondary Output Current
(Continuous)
Secondary Output Current (Pulsed)
I
PRI_INR_PK
I
PRI_IN_DC
K
I
SEC_OUT_DC
I
SEC_OUT_PULSE
10ms pulse, 25% duty cycle,
I
SEC_OUT_AVG
≤
50% rated I
SEC_OUT_DC
V
PRI_DC
= 42V, I
SEC_OUT_DC
= 160A
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
= 36V to 46V, I
SEC_OUT_DC
= 160A
V
PRI_DC
= 42V, I
SEC_OUT_DC
= 80A
PRI to SEC Efficiency (Hot)
PRI to SEC Efficiency
(Over Load Range)
V
PRI_DC
= 42V, I
SEC_OUT_DC
= 160A
32A < I
SEC_OUT_DC
< 160A
V
PRI_DC
= 42V, I
SEC_OUT_DC
= 160A, T
INTERNAL
= –40°C
V
PRI_DC
= 42V, I
SEC_OUT_DC
= 160A
V
PRI_DC
= 42V, I
SEC_OUT_DC
= 160A, T
INTERNAL
= 100°C
Frequency of the output voltage ripple = 2x F
SW
C
SEC_EXT
= 0µF, I
SEC_OUT_DC
= 160A, V
PRI_DC
= 42V,
20MHz BW
T
INTERNAL
≤
100ºC
L
PRI_IN_LEADS
L
SEC_OUT_LEADS
Frequency 2.5MHz (double switching frequency),
simulated lead model
Frequency 2.5MHz (double switching frequency),
simulated lead model
3
0.64
97.4
97.1
97.5
96.9
90
0.8
0.9
1.5
1.14
0.95
1.3
1.75
1.20
110
205
nH
nH
1.1
1.7
2.0
1.26
MHz
mV
mΩ
98.2
97.4
%
%
98
%
V
PRI_DC
= 46V, C
SEC_EXT
= 3000µF,
R
LOAD_SEC
= 20% of full load current
T
INTERNAL
≤
100ºC
At I
SEC_OUT_DC
= 160A, T
INTERNAL
≤
100ºC
Primary to secondary, K = V
SEC_DC
/ V
PRI_DC
, at no load
1/3
160
176
30
75
53.9
A
V/V
A
A
5
12.5
8
12
19.5
28
22
31
A
W
36
46
15
V
V
mA
NBM
™
Bus Converter
Page 5 of 26
Rev 1.6
11/2017
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