Page 1
28 Vdc MIL-COTS
DESIGN GUIDE
VIPAC
™
Page 2
ONTENTS
C
2 P
4 FEATURES
5 INPUT / OUTPUT OPTIONS
6 SPECIFICATIONS
RODUCT OVERVIEW
7 – 8 TE
9 INPUT CONNECTIONS
10 – 12 OU
13 CHASSIS CONFIGURATIONS
14 – 15 MOUNTING OPTIONS
16 MECHANICAL DRAWINGS
16 MECHANICAL INFORMATION
17 THERMAL MANAGEMENT
18 GENERAL INFORMATION
19 APPLICATION TIPS
CHNICALOVERVIEW
TPUTCONNECTIONOPTIONS
v i c o r p o w e r . c o m
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Page 3
ODUCT
R
P
Vicor’s 28 V MIL-COTS VIPAC™is an integrated power system
leveraging the latest advances in DC-DC converter technology
and modular front ends. VIPAC combines application specific
power processing units (PPU) and a choice of chassis styles to
provide fast, flexible and highly reliable power solutions for a
wide range of demanding applications.
The PPU is the core element of the system and incorporates either
Vicor’s M-FIAM5B or M-FIAM9 to provide transient protec-
ion, EMI filtering and inrush current limiting.
t
The web-based VCAD tool enables designers to configure the
PPU with up to three independently regulated outputs having
power levels from 50 to 400 W. Vicor’s Maxi, Mini, Micro Series
DC-DC converters, in industry standard quarter, half and full
brick packages, are used to deliver output voltages from 3.3 to
48 Vdc. Additionally, the wide trim range of the modules can pro-
vide operating voltages as low as 500 mV.
The PPU is comprised of:
O
ERVIEW
V
PPU
• DC input modular front end
• Vicor’s Maxi, Mini, Micro Series high density
DC-DC converters
• Interface board
• Coldplate or finned chassis
• Choice of output termination styles
The VIPAC is offered in several chassis configurations facilitating
its use in a variety of applications using either conduction,
convection or forced convection cooling. The low profile,
conduction cooled version may be mounted to an existing
cabinet wall, coldplate or heat sink. The 0.5" or 1" finned
versions, available in longitudinal or transverse configurations,
are ideal for use in free or forced convection environments.
The use of standard chassis footprints allowsdifferent input voltage
configurations of theVIPAC to be used interchangeably
depending on system and market requirements.
v i c o r p o w e r . c o m
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Page 4
re-assembled and Tested Front Ends
P
M-FIAM5B – Filter Input Attenuator Module
-FIAM9 – Filter Input Attenuator Module
M
Rugged Interconnect Board
electable for Single, Multiple
S
r Parallel Outputs
o
Input Options
8 Vdc MIL-COTS version
2
Control Interface
Output Sequencing
BUS-OK /Bus Voltage Monitor
Output Enable / Disable
rotective Features
P
Inrush Current Limiting
nput Transient Protection
I
Auto Restart
EMI Filtering
Platform Options
Low Profile Coldplate
0.5" and 1" Optional Finned Configurations
DC Input
18 – 36 Vdc; 28 V nom.
Vicor’s Maxi, Mini, Micro Series
DC-DC Converters
Output Voltages 0.5 – 48 Vdc
50 – 400 W / Output
(1/4 Brick Modules Shown)
Choice of Output Termination
(LugMate Shown)
v i c o r p o w e r . c o m
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Page 5
EATURES
–Out
–S
SC
+S
+Out
Load
R
D
Trim Down
Error
Amp
1k Ω
1.23 V
0.033 μF
–Out
SC
+Out
Load
R
D
Trim Down
Error
Amp
1 kΩ
1.23 V
0.033 μF
F
•
Control Interface
Power Up / Down control
Output sequencing for Turn-on, Turn-off
BUS-OK
•
Partitioned Power Architecture
Maximizes packaging flexibility
Enhanced reliability
Wide operating temperature range
–40˚ to +95˚C chassis H-Grade
–55˚ to +95˚C chassis M-Grade
•
Secondary Control
Output voltage trimming
10 – 110% Vout
Micro
Mini and Maxi
v i c o r p o w e r . c o m
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Page 6
NPUT /
I
UTPUT
O
PTIONS
O
Output Voltage Selection
VIPAC
Configuration
MVC-G / MVX-G
MVC-D / MVX-D
MVC-A / MVX-A
# Outputs
Single
Single ll
Dual
Dual ll
Triple
# Outputs
Single
3.3 V 5 V 12 V 15 V 24 V 28 V 36 V 48 V Total
Micro Maximum Output Power (W)*
75 100 100 100 100 100 100 100 100
150 200 200 200 200 200 200 200 200
75 100 100 100 100 100 100 100
75 100 100 100 100 100 100 100
150 200 200 200 200 200 200 200
75 100 100 100 100 100 100 100
75
75 100 100 100 100 100 100 100 300
75 100
Mini Maximum Output Power (W)*
150 200 200 200 200 200 200 200 200
100 100 100 100 100 100 100
100 100 100 100 100 100
200
300
MVC-E / MVX-E
Single ll
MVC-B / MVX-B
MVC-F / MVX-F
*Model numbers and total output power capability are application specific.
Component tolerances may effect total output power (±5%) in parallel (//) configurations.
See VIPAC configuration tool at: vicorpower.com/vcad
MVC-xxx refers to M-FIAM5B
MVX-xxx refers to M-FIAM9
Dual
# Outputs
Single
300 400 400 400 400 400 400 400 400
150 200 200 200 200 200 200 200
150 200 200 200 200 200 200 200
Maxi Maximum Output Power (W)*
264 400 400 400 400 400 400 400 400
400
v i c o r p o w e r . c o m
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Page 7
PECIFICATIONS
S
28 Vdc Input MIL-COTS Version
Parameter Min Typ Max Unit Notes
Operating input voltage 18 28 36 Vdc Continuous
Turn-on 18 Vdc
Inrush current 5.0 A pk
Inrush limiting 0.007 A µF
Transient immunity (M-FIAM5B) 50 Vdc 12.5 ms per MIL-STD-704E/F
Transient immunity (M-FIAM9) 100 Vdc 50 ms per MIL-STD-1275A/B/D
250 Vdc 70 ms per MIL-STD-1275A/B/D
70 Vdc 20 ms per MIL-STD-704A
50 Vdc 12.5 ms per MIL-STD-704E/F
EMI MIL-STD-461E Conducted emissions: CE101, CE102
Conducted susceptibility: CS101, CS114, CS115, CS116
Reverse Polarity Protection Internally fused
Environmental
Parameter Min Typ Max Unit Notes
Dielectric withstand
Input to chassis 1,500/2,121 Vrms/Vdc
Operating chassis temperature
H-Grade -40 95 °C
M-Grade -55 95 °C
Shock
(40 g for 15–23 ms, 75 g for 8–13 ms)
Vibration MIL-STD-810F Method 514.5, Procedure 1 (20–2000 Hz at 5 g)
Humidity 5 95 % Non-condensing
MIL-STD-810F
Method 516.5, Procedure 1
Output Specifications - General
Parameter Min Typ Max Unit Notes
Output voltage set point ±1 % Vout nom
Line regulation ±0.02 ±0.2 % Low line to high line; full load
Temperature regulation ±0.002 ±0.005 %/˚C Over operating temp. range
Over temperature shut down 115 ˚C
Power sharing accuracy ±2 ±5 % 10% to 100% of full load
Programming range 10 110 % Of nominal output voltage.
(For trimming below 90% of nominal, a minimum load
of 10% of maximum rated power may be required)
Current limit 115 % Iout max. Output voltage 95% of nominal
Short circuit current 115 % Iout max. Output voltage <250 mV
at 25°C, nominal line and nominal load, per module unless otherwise specified
Interface Control Functions
Type Master Output Output Bus Emergency
Enable Enable/Disable Sequencing OK Off
Local √ √ √
Ρεμοτε √ √ √ √ √
Output Sequencing
Power up will always occur in the defined sequence stored within the device. Any preprogrammed
power down sequence, except the default, will not be in effect upon loss or removal of the VIPAC
source voltage. Sequenced power down can only be achieved by issuing the requisite commands
through the interface before removing the source voltage.
v i c o r p o w e r . c o m
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Page 8
ECHNICAL
DC-DC
Converter
Output #1
M-FIAM5B / M-FIAM9
+DC
-DC
+
PC
PR
–
+
PC
PR
–
+
PC
PR
–
+
S
C
–
DC-DC
Converter
Output #2
+
S
C
–
Line Filter
Transient Protection
Inrush Current Limiting
Reverse Polarity Protection
Logic Control
– Master Disable (Local mode)
– Output Sequencing
– Module Status
– BUS-OK
Control 1
Control 2
Control 3
DC-DC
Converter
Output #3
+
SC
–
+
_
Remote
RS232
Local Control
OR
User
Interface
Output
18 – 36 Vdc
I
nput
VIPAC BLOCK DIAGRAM - DC INPUT
J1
J3
GND
T
VERVIEW
O
Overview
Vicor’s 28 Vdc for MIL-COTS VIPAC front-end section
utilizes either Vicor’s M-FIAM5B or M-FIAM9 input module to
provide EMI filtering, transient protection, inrush current limiting and rectification as appropriate. The front end also contains input connectors, fusing and control circuitry to which
the user can interface discrete circuitry.
Up to three Maxi, Mini, Micro Series DC-DC converters are
combined with the front end in an integrated mechanical as-
sembly providing a high efficiency power supply delivering up
to 400 W of output power.
Circuit Operation
The VIPAC utilizes either the M-FIAM5B or M-FIAM9 module
which provides inrush current limiting, transient protection
and EMI filtering. The DC voltage is applied via an agency approved 3-pin connector; a fuse in the the “+” lead protects the
VIPAC from damage due to internal shorts. At start up, inrush
current is limited by a FET. This FET serves as both an inrush
current limiter at power up and a voltage limiting device in
the event of an input transient over voltage condition.
The FET, driven by a DC bus voltage sense circuit, is brought to
a low impedance after initial power up.
The 28 V is applied to one or more Vicor Maxi, Mini, Micro DCDC converters which deliver the selected output voltage and
urrent levels. TheDC-DC converters provideoutput over volt-
c
age protection, output current limiting, voltage regulation trim
capability and input to output isolation.
Vicor’s VCAD configuration tool selects standard 24 V in Maxi,
Mini, and Micro modules for use within the VIPAC based on
the application requirements. The modules are
chosen based on the input and output requirements and the
closest, but higher power level that is available to that
specified. Specifications for these can be found on their respective data sheets.
v i c o r p o w e r . c o m
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Page 9
1.5 mA
max.
V
+
r
BUS-OK
+
–
20 mA max.
Disable
MOD-DIS
V
+
+
–
VIPAC
J3
3
2
7
6
ECHNICAL
T
VERVIEW
O
VIPAC Control
The VIPAC provides the user with choices with respect to how
the unit is operated. It can be controlled locally by applying
he appropriate “digital” signals to the device.
t
BUS-OK
An internal replica of BUS-OK is wired to the PC pin of all in-
ternal DC-DC converter modules. The modules will be
disabled (no DC output) during initial power up of theVIPAC
until the internal DC input bus voltage to the DC-DC converters
is sufficient to support full load operation. The BUS-OK status
output reflects the status of this inhibit function. This same
logic circuit will shut down the converters when the internal
DC bus voltage is insufficient to support proper operation.
This shut down will occur during normal power down, line
dropouts exceeding the hold up time, or internal faults
causing the internal DC bus voltage at the input of the
converters to collapse. The BUS-OK output provides the user
with an optically isolated status indication of the internal
DC bus. This output, in AC powered system applications, can
provide power supply status, switch in backup (standby)
sources or initiate “power down”sequences to save volatile
memory contents in the event of a power loss. The time from
BUS-OK deassertion to output shut down is dependent upon
the value of hold upcapacitors used. The VIPAC online design
tool contains a hold up capacitor calculator which provides ap-
propriate values.
MOD-DIS+, MOD-DIS–
The MOD-DIS input is an optically coupled input and allows for
remote disabling of the output(s) of the VIPAC. Applying current
to the MOD-DIS+, MOD-DIS– input disables the supply.
The minimum input current for disabling the supplies is 3 mA.
he maximum allowable current is 20 mA.
T
Electrical Connections
Status output pair BUS-OK+, BUS-OK– are the collector (+) and
emitter (–) of an NPN optoisolator output transistor. In a typical
application, the collector terminal BUS-OK+ of the optocoupler
can be connected via current limiting resistors to a source no
greater than 70 Vdc. These resistors should limit the maximum
current to the optocoupler output transistors to 1.5 mA. The
emitter terminal BUS-OK– is connected to the return of the ex-
ternal source. The status OK condition will set the optocoupler
output transistors in saturation and are capable of sinking up to
1.5 mA with a Vce saturation voltage of 0.4 V. Users should be
cautioned that although the output of the VIPAC can be used as
the pull-up source, shortly after BUS-OK changes from OK
(saturated) to NOT OK (high Z), the pull-up voltage will be shut
down. If the pull-up source is one of theVIPACs outputs, it is
advisable to provide a capacitive reservoir in order to maintain
the pull-up potential after loss of DC current output. Use edge
sensing logicto detect assertion of logic outputs, or a separate
source of bias supply voltage (i.e., backup batteries) to provide a
safe pull-upvoltage source regardless of the line status.
v i c o r p o w e r . c o m
MOD-DIS Input
Apply a current of 3–20 mA
to disable output.
BUS-OK – Status Output
Transistor on when OK.
Vce sat. = < 0.4 V @ 1.5 mA
maximum external pull-up
is 70 Vdc.
BUS–OK signal is isolated
8
Page 10
NPUT CONNECTIONS
I
28 Vdc Input
Conn. Pin# Funct. Mating Conn.
J1 1 GND P/N 21394
2 – Vin
3 + Vin
I/O Interface*
Conn. Pin# Funct. Mating Conn.
I/O Interface
emovable Jumper
R
N= Local Control
I
P/N 22988
7
1
J3
8 Vdc Input
2
J3 1 NC P/N 22988
2 MOD-DIS–
3 MOD-DIS+
4 GND
5 NC
6 BUS-OK–
7 BUS-OK+
* See detailed description on Pgs 7– 8
P/N 21394
GND –Vin +Vin
J1
1
2
3
v i c o r p o w e r . c o m
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Page 11
UTPUT CONNECTION
O
Discrete Output Configurations
PTIONS
O
LugMate
(Factory Installed Option)
Micro LugMate
1
1
1
R
ing Lugs LugMate Pin Out
Solder
Pin # Pad Function
1 – Vout
Rd Trim-Down
SC Secondary Control
Ru Trim-Up
3 + Vout
Micro LugMate - with Rd/Ru trim resistor
solder pads. (Design
#4-40 Torque 4 in. lbs.
calculator for trim resistors
located at vicorpower.com)
1
Rd
SC
Ru
Mini/Maxi LugMate
1
5
1
5
J4
J4
#10-32 Torque 16 in. lbs.
1
5
1
5
P/N 16385
3
Pin # Conn. Function Mating Conn.
1 – Vout
J4-1 – Vout
J4-2 – Sense
J4-3 Secondary Control P/N 16385
J4-4 + Sense
J4-5 + Vout
5 + Vout
*Removable jumper is facto ry ins talled for local sensing.
See Pg 22 for details
**For units configured in paralle l, one module will have
the SC jumped to the –S and –Out.
*Removable
Jumper
*Removable
Jumper
v i c o r p o w e r . c o m
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Page 12
UTPUT CONNECTION
O
arallel Output Configurations
P
Shown with the output of two modules connected in parallel using BUS BARS.
PTIONS
O
LugMate
Factory Installed Option)
(
Micro LugMate
1
1
1
Ring Lugs LugMate Pin Out
older
S
Pin # Pad Function
1 – Vout
Rd Trim-Down
SC Secondary Control
Ru Trim-Up
3 + Vout
Micro LugMate - with Rd/Ru trim
#4-40 Torque 4 in. lbs.
resistor solder pads.
(Design calculator
for trim resistors
located at vicorpower.com)
1
Rd
SC
Ru
Mini/Maxi LugMate
1
5
1
5
J4
J4
#10-32 Torque 16 in. lbs.
1
5
1
5
P/N 16385
3
Pin # Conn. Function Mating Conn.
1 – Vout
J4-1 – Vout
J4-2 – Sense
J4-3 Secondary Control** P/N 16385
J4-4 + Sense
J4-5 + Vout
5 + Vout
*Removable jumper is facto ry ins talled for local sensing.
See Pg 22 for details
**For units configured in paralle l, one module will have
the SC jumped to the –S and –Out.
*Removable
Jumper
*Removable
Jumper
v i c o r p o w e r . c o m
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Page 13
UTPUT CONNECTION
14
5
8
1
9
10
1
8
1
12
13
24
O
PTIONS
O
PlugMate
Factory Installed Option)
(
Micro PlugMate
Mini PlugMate
Maxi PlugMate
Mating Connector Kits
icor P/N 25073
V
Vicor P/N 25067
PlugMate Pin Out
Looking into PlugMate)
(
Pin # Function Pin # Function
1 +Vout 5 +Vout
2 +Vout 6 N/C
3 –Vout 7 SC
4 –Vout 8 –Vout
Mating Connector Tyco Elect. P/N Vicor P/N
Housing TYC-794657-8 25056
Pin 1-106529-2 24796
Kit 25073
Pin # Function Pin # Function
1 +Vout 10 +Vout
2 +Vout 11 +Vout
3 +Vout 12 +Vout
4 N/C 13 +S
5 N/C 14 SC
6 N/C 15 –S
7 –Vout 16 –Vout
8 –Vout 17 –Vout
9 –Vout 18 –Vout
Mating Connector Tyco Elect. P/N Vicor P/N
Housing TYC1-794657-8 25050
Pin 1-106529-2 24796
Kit 25067
Note:
VIPACs that contain multiple modules configured as a single output (paralleled
for power or redundancy) MUST have their Outputs and Sense connected to each
other at the load.
DO NOT OPERATE A PARALLEL CONFIGURATION WITH ONLY ONE
MODULE CONNECTED.
v i c o r p o w e r . c o m
Vicor P/N 25061
Pin # Function Pin # Function
1 +Vout 13 +Vout
2 +Vout 14 +Vout
3 +Vout 15 +Vout
4 +Vout 16 +Vout
5 +Vout 17 +Vout
6 N/C 18 +S
7 SC 19 –S
8 –Vout 20 –Vout
9 –Vout 21 –Vout
10 –Vout 22 –Vout
11 –Vout 23 –Vout
12 –Vout 24 –Vout
Mating Connector Tyco Elect. P/N Vicor P/N
Housing TYC2-794657-4 25044
Pin 1-106529-2 24796
Kit 25061
12
Page 14
HASSIS CONFIGURATIONS
C
MVC-A / MVX-A
3 MICRO
• 4.96" x 6.8" (126,0 x 172,7 mm)
• Dual or Triple Output
• Up to 300 W
MVC-E / MVX-E
1 MINI
• 3.15" x 6.8" (80,0 x 172,7 mm)
• Single Output
• Up to 200 W
MVC-B / MVX-B MVC-D / MVX-D
2 MINI
• 4.96" x 6.8" (126,0 x 172,7 mm)
• Single or Dual Output
• Up to 400 W
MVC-F / MVX-F
1 MAXI
• 3.15" x 9.15" (80,0 x 232,4 mm)
• Single Output
• Up to 400 W
2 MICRO
• 3.15" x 6.8" (80,0 x 172,7 mm)
• Single or Dual Output
• Up to 200 W
MVC-G / MVX-G
1 MICRO
• 3.15" x 6.8" (80,0 x 172,7 mm)
• Single Output
• Up to 100 W
Finned Chassis Configurations
Coldplate
Optional 0.5" Fin
Optional 1" Fin
v i c o r p o w e r . c o m
Longitudinal
Transverse
13
Page 15
OUNTING
M
PTIONS
O
Through-hole Mounting
VIPAC with integral
inned heat sink
f
through-hole
ounted
m
S
urface Mounting
External user
supplied heat sink
hermal
T
compound
oth sides
b
VIPAC with integral finned heat sink
through-hole mounted
VIPAC with external user
supplied heat sink
v i c o r p o w e r . c o m
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Page 16
Thermal compound
oldplate VIPAC
C
oldplate VIPAC mounted
C
to custom thermal interface
For proper clearance use:
Long standoff (P/N 23709) for
mounting 1" heat sink fins down.
Short standoff (P/N 23710) for mounting
0.5" heat sink fins down
or either heat sink fins up.
VIPAC with integral
finned heat sink (down)
VIPAC with integral
finned heat sink (up)
v i c o r p o w e r . c o m
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Page 17
ECHANICAL
0.81
(20,6)
0.50
(12,7)
1.00
(25,4)
1.31
(33,3)
0.32
(8,1)
0.08
(2,0)
0.22
(5,6)
0.75
(19,1)
0.56
(14,2)
1.37
(34,8)
1.87
(47,5)
M
RAWINGS
D
Please reference the mechanical drawings on the MIL-COTS VIPAC Power System web page at
www.vicorpower.com.
Heat Sink Options
Coldplate 0.5" Fin Option 1" Fin Option
Fin spacing and relief
are the same for both Fin options.
ECHANICAL INFORMATION
M
VIPAC Product Weight
Chassis Configuration
VIPAC Chassis Coldplate 0.5" Fins 1" Fins
Model Prefix Configuration
Pounds Grams Pounds Grams Pounds Grams
MVC-G / MVX-G 1 Micro 0.9 411 1.4 640 1.6 731
MVC-D / MVX-D 2 Micro 1.0 457 1.5 686 1.7 777
MVC-A / MVX-A 3 Micro 1.4 640 2.2 1006 2.5 1143
MVC-E / MVX-E 1 Mini 1.0 457 1.4 640 1.6 731
MVC-B / MVX-B 2 Mini 1.4 640 2.2 1006 2.6 1189
MVC-F / MVX-F 1 Maxi 1.3 594 2.0 914 2.3 1051
VIPAC Standoff Mounting Kits
Vicor Kit P/N Kit Description For use with:
23709 Qty. 6-#23655 long standoff 1” finned heat sinks
23710 Qty. 6-#23656 short standoff 1/2” finned heat sinks or coldplate
v i c o r p o w e r . c o m
16
Page 18
HERMAL
T
ANAGEMENT
M
Thermal Impedance Specifications
VIPAC Chassis Natural 200 400 600 800 1000 1200
odel Prefix Config. Heat Sink Convection (LFM) (LFM) (LFM) (LFM) (LFM) (LFM)
M
MVC-A / MVX-A 3 Micro 0.5" L 1.98 0.77 0.53 0.45 0.39 0.36 0.33
0.5" T 1.71 0.68 0.48 0.40 0.36 0.33 0.30
1.0" L 1.68 0.58 0.42 0.36 0.32 0.30 0.28
1.0" T 1.27 0.46 0.33 0.28 0.25 0.23 0.21
MVC-B / MVX-B 2 Mini 0.5" L 1.90 0.77 0.53 0.44 0.39 0.36 0.33
0.5" T 1.67 0.69 0.48 0.41 0.37 0.33 0.31
1.0" L 1.49 0.54 0.39 0.34 0.31 0.28 0.27
1.0" T 1.22 0.47 0.33 0.28 0.25 0.23 0.21
MVC-D / MVX-D 2 Micro 0.5" L 3.13 1.28 0.89 0.74 0.66 0.59 0.54
0.5" T 2.40 1.02 0.73 0.63 0.56 0.51 0.47
1.0" L 2.81 0.97 0.70 0.60 0.54 0.50 0.46
1.0" T 1.87 0.75 0.55 0.47 0.42 0.39 0.35
(˚C/W)
Airflow
MVC-E / MVX-E 1 Mini 0.5" L 3.11 1.26 0.88 0.74 0.65 0.59 0.54
0.5" T 2.39 1.01 0.73 0.62 0.56 0.51 0.47
1.0" L 2.51 0.87 0.64 0.56 0.51 0.48 0.45
1.0" T 1.76 0.70 0.52 0.44 0.40 0.37 0.33
MVC-F / MVX-F 1 Maxi 0.5" L 2.42 1.02 0.69 0.57 0.50 0.45 0.41
0.5" T 1.72 0.77 0.55 0.47 0.42 0.38 0.37
1.0" L 2.01 0.72 0.52 0.45 0.41 0.38 0.36
1.0" T 1.26 0.53 0.38 0.33 0.29 0.27 0.25
MVC-G / MVX-G 1 Micro 0.5" L 3.13 1.28 0.89 0.74 0.66 0.59 0.54
0.5" T 2.40 1.02 0.73 0.63 0.56 0.51 0.47
1.0" L 2.81 0.97 0.70 0.60 0.54 0.50 0.46
1.0" T 1.87 0.75 0.55 0.47 0.42 0.39 0.35
v i c o r p o w e r . c o m
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Page 19
ENERAL INFORMATION
G
Input Mating Connector Kits
art Number Description
P
23487 For use with: 28 Vdc Input VIPACs
Kit Contains: One 3-pin DC Input mating connector, Vicor P/N 21394
One I/O Interface mating connector, Vicor P/N 22988
O
utput Mating Connector Kits
Part Number Description
23488 For use with: Mini or Maxi LugMate
Kit Contains: One control connector, Vicor P/N 16385
Suggested Wire Gauge
Function Wire Gauge Application
DC Input/Output #20 0 A – 3 A
Leads
Two ring lugs
23489 For use with: Micro LugMate
Kit Contains: Two ring lugs
25061 For use with: Maxi PlugMate
Kit Contains: One 24 pin housing, Vicor P/N 25044
24 pins, Vicor P/N 24796
#18 4 A – 6 A
#16 7 A – 10 A
#14 11 A – 15 A
#12 16 A – 25 A
#10 26 A – 40 A
#8 41 A – 65 A
#6 66 A – 104 A
#4 105 A – 160 A
25067 For use with: Mini PlugMate
Kit Contains: One 18 pin housing, Vicor P/N 25050
18 pins, Vicor P/N 24796
25073 For use with: Micro PlugMate
Kit Contains: One 8 pin housing, Vicor P/N 25056
8 pins, Vicor P/N 24796
Mating Connector Cross Reference
Manufacturer Part Number Crimping Tools
Designator Description Vicor P/N
Pin & Housing Manufacturer Pin Housing Wire Size Hand Die Set
Tool P/N P/N
J1 VIPAC DC Input - 3 Pin 21394 Tyco
Electronics 12 AWG 69710-1 58380-1
J3 VIPAC I/O Interface - 7 Pin 22988 JST 07KR-6S N/A
J4 VIPAC Output Control - 5 Pin 16385 Tyco
Electronics
Micro PlugMate mating connector 25073 Tyco
8 pin Electronics
Mini PlugMate mating connector 25067 Tyco
18 pin Electronics
Maxi PlugMate mating connector 25061 Tyco
24 pin Electronics
* 770251-3 is an acceptable alternative
193842-1* 770018-1
644083-5 N/A
1-106529-2 794657-8 18-20 AWG 91508-1 N/A
1-106529-2 1-794657-8 18-20 AWG
1-106529-2 2-794657-4 18-20 AWG
14 AWG 91506-1 N/A
AMP
91508-1
91508-1
N/A
N/A
v i c o r p o w e r . c o m
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Page 20
PPLICATION TIPS
A
Selecting Heat Sinks
VIPAC Power Systems are rated for operation in ambient
temperatures up to 65˚C with a maximum chassis temperature of
95˚C. Operation within these limits is essential for long life and
users should select an appropriate thermal management system.
The thermal performance of a particular VIPAC chassis
configuration can be approximated from the thermal resistance
of the chassis, ambient operating temperature and total power
issipation, using a few simple formulas shown below.
d
Thermal Resistance:
Ambient Temperature:
Power Dissipation:
Example:
Verify a 400 W, 28 Vdc output VIPAC does not exceed 95˚C
chassis temperature (Tc).
• MVP-B chassis configuration with 1" transverse heat
sink is selected and 200 LFM airflow is provided.
• Thermal resistance (θ) of 0.47˚C/W is obtained from
the chart on pg 20.
• Ambient operating temperature (TA) specified by the
user is 40˚C.
• VIPAC Power System efficiency (η) is 80% overall.
Formula:
Pout
Tc = (( – Pout) x θ) + TA
Conclusion:
This VIPAC will operate in the conditions specified and
not exceed maximum chassis temperature.
η
400
= (( – 400) x 0.47) + 40
0.8
= 87˚C
Refer to pg 20
User specified,not to exceed 65˚C
Calculated as: (Pout/Efficiency)–Pout
VIPAC Power System Dissipation
Pout (n)
Pdiss =
Remote Sense
A remote sense feature is provided on outputs configured
w
sense connections must be terminated either locally or re-
motely and may not be left open. The sense lines for
VIPACs configured with a single paralleled output must
be terminated to the same point. VIPACs provided with
the optional LugMate connectors are configured for local
sensing via removable jumpers installed at the factory.
The jumpers will need to be removed if access to the
secondary control function is made via mating connector
P/N 16385 and connections will need to be established
for local or remote sensing.
Wire Routing
Avoid routing wires over VIPAC Power System.
Do not bundle Input and Output leads together.
Parallel Outputs
The VIPAC can be configured with parallel modules for
increased power or redundancy. When used for increased
power, short the SC pin to –Sense on one module. This
configures the module as a Booster. The user must
properly connect the output and sense terminals (See
above). At no time operate a paralleled output with a load
applied only to one module! (See Output Connection
Options, pages 10 – 12)
Σ
1 – n
ith Mini or Maxi sized DC-DC converters. The output
η(n)
0.95
- Pout (n)
Comment:
Efficiency of a particularVIPAC will depend on the
specific output voltages and operating load conditions.
In general the efficiency ofVIPACs with outputs of
5 Vdc or less is approximately 70% and those with
outputs greater than 5 Vdc is 80%. A more accurate
calculation can be derived by summing dissipation of
each DC-DC converter module used in theVIPAC and
the front-end section of theVIPAC (using 95% efficiency
for the front end).
v i c o r p o w e r . c o m
19
Page 21
ECHNICAL SUPPORT CONTACTS
T
USA
vicorpower.com
Vicor Corporation
(Corporate Headquarters)
5 Frontage Road
2
Andover, MA 01810-5413
For General Information
Tel: 978-470-2900
Fax: 978-475-6715
For Technical Support
Tel: 800-927-9474
Fax: 978-749-3341
Email: apps@vicorpower.com
For Sales Support
In U.S. and Canada: 800-735-6200
Fax: 978-475-6715
Email: custserv@vicorpower.com
Vicor Corporation
Lombard, IL
Tel: 630-769-8780
Fax: 630-769-8782
Vicor Westcor Division
Sunnyvale, CA
Tel: 408-522-5280
Fax: 408-774-5555
westcorpower.com
Europe
vicoreurope.com
00 800 8426 7000 (Europe free phone)
Vicor France
aris
P
Tel: +33 1 34 52 18 30
Fax: +33 1 34 52 28 30
Email: expressfr@vicorpower.com
Asia-Pacific
Vicor Japan Co., Ltd.
Tel: +81 3 5487 3880
Fax: +81 3 5487 3885
vicorpower.jp
Vicor Hong Kong
Tel: +852 2956 1782
Fax: +852 2956 0782
vicor-asia.com
Vicor Germany
Munich
Tel: +49 89 962 439 0
Fax: +49 89 962 439 39
Email: expressde@vicorpower.com
Vicor Italy
Milan
Tel: +39 02 2247 23 26
Fax: +39 02 2247 31 66
Email: expressit@vicorpower.com
Vicor U.K.
Camberley
Tel: +44 1276 678222
Fax: +44 1276 681269
Email: expressuk@vicorpower.com
Picor Corporation
North Smithfield, RI
Tel: 401-235-1100
Fax: 401-235-1117
picorpower.com
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by
Vicor for its use. No license is granted by implication or otherwise under any patent or patent rights of Vicor. Vicor
components are not designed to be used in applications, such as life support systems, wherein a failure or mal-
function could result in injury or death. All sales are subject to Vicor’s Terms and Conditions of Sale, which are
available upon request. No user serviceable components, contact Vicor to arrange for repair or replacement.
Specifications are subject to change without notice.
vi co rp owe r. co m
Rev. 1.6 10/13
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