PDF MIL-COTS VIPAC Design Guide

28 Vdc MIL-COTS
DESIGN GUIDE
VIPAC
™
Contents
2– 3PRODUCT OVERVIEW
4FEATURES
5INPUT / OUTPUT OPTIONS
6SPECIFICATIONS
7 – 8 TECHNICAL OVERVIEW
9INPUT CONNECTIONS
10 – 12 OUTPUT CONNECTION OPTIONS
13CHASSIS CONFIGURATIONS
14 – 15 MOUNTING OPTIONS
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16MECHANICAL DRAWINGS
16MECHANICAL INFORMATION
17THERMAL MANAGEMENT
18GENERAL INFORMATION
19APPLICATION TIPS
1
Product Overview
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
PPU
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
protection, EMI filtering and inrush current limiting.
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
provide operating voltages as low as 500 mV.
The PPU is comprised of:
•
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 allows different input voltage
configurations of the VIPAC to be used interchangeably
depending on system and market requirements.
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2
Input Options
28 Vdc MIL-COTS version
Control Interface
Output Sequencing
BUS-OK /Bus Voltage Monitor
Output Enable / Disable
Pre-assembled and Tested Front Ends
M-FIAM5B – Filter Input Attenuator Module
M-FIAM9 – Filter Input Attenuator Module
Rugged Interconnect Board
Selectable for Single, Multiple
or Parallel Outputs
Protective Features
Auto Restart
Inrush Current Limiting
EMI Filtering
Input Transient Protection
Vicor’s Maxi, Mini, Micro Series
DC-DC Converters
Output Voltages 0.5 – 48 Vdc
50 – 400 W / Output
(1/4 Brick Modules Shown)
Platform Options
Low Profile Coldplate
0.5” and 1” Optional Finned Configurations
Choice of Output Termination
(LugMate Shown)
DC Input
18 – 36 Vdc; 28 V nom.
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FEATURES
• Control Interface
Power Up / Down control
Output sequencing for Turn-on, Turn-off
BUS-OK
1k
Error
Amp
1.23 V
0.033 F
Maximizes packaging flexibility
Enhanced reliability
Wide operating temperature range
Load
+S
1.23 V
RD Trim Down
+Out
–40˚ to +95˚C chassis H-Grade
–55˚ to +95˚C chassis M-Grade
–S
SC
• Partitioned Power Architecture
–Out
1k
Error
Amp
0.033 F
–Out
–S
RD Trim Down
SC
Load
+S
+Out
Micro
1.23 V
• Secondary Control
Output voltage trimming
10 – 110% Vout
1k
Error
Amp
1k
Error
Amp
0.033 F
1.23 V
0.033 F
–Out
SC
–Out
+Out
–S
SC
RD Trim Down
RD Trim Down
Load
Load
+S
+Out
Mini and Maxi
1.23 V
1k
Error
Amp
0.033 F
–Out
–S
SC
RD Trim Down
Load
+S
+Out
1.23 V
1k
Error
Amp
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0.033 F
–Out
SC
RD Trim Down
Load
+Out
4
INPUT / OUTPUT OPTIONS
Output Voltage Selection
3.3 V
VIPAC
Configuration
5 V
12 V
15 V
24 V
28 V
36 V
48 V
Total
MicroMaximum Output Power (W)*
# Outputs
Single
75 100100100100100100100100
Single ll
150200200200200200200200200
Dual
75 100100100100100100100200
75 100100100100100100100
Dual ll
150200200200200200200200
75 100100100100100100100
Triple
75
75
75
MVC-G / MVX-G
MVC-D / MVX-D
MVC-A / MVX-A
300
100100100100100100100
100
100
100
100100100100300
100
100100
100100100100
Maximum Output Power (W)*
Mini
# Outputs
Single
150 200200200200200200200200
MVC-E / MVX-E
300 400400400400400400400400
Single ll
150 200200200200200200200
400
150
200
200
200
200
200
200
200
MVC-B / MVX-B
MaxiMaximum Output Power (W)*
# Outputs
Single
264 400400400400400400400400
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
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5
SPECIFICATIONS
28 Vdc Input MIL-COTS Version
Parameter
Min
Typ
Max
UnitNotes
Operating input voltage
18
28
36
Vdc
Continuous
Turn-on
18Vdc
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
UnitNotes
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
Method 516.5, Procedure 1
MIL-STD-810F
(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
Output Specifications - General at 25°C, nominal line and nominal load, per module unless otherwise specified
Parameter
Min
Typ
Max UnitNotes
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
Interface Control Functions
Type
Master
Enable
Local
Remote
Output
Enable / Disable
√
√
√ Output
Sequencing
Bus
OK
Emergency
Off
√
√
√
√
√
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.
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TECHNICAL OVERVIEW
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
assembly 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 overvoltage
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
DC-DC converters which deliver the selected output voltage
and current levels. The DC-DC converters provide output over
voltage 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.
VIPAC BLOCK DIAGRAM - DC INPUT
18 – 36 Vdc
Input
+
GND
-DC
+
Transient Protection
Inrush Current Limiting
Reverse Polarity Protection
Line Filter
J1
PC
PR
–
+
DC-DC
Converter
Output #1
SC
DC-DC
Converter
Output #2
SC
DC-DC
Converter
Output #3
SC
–
+DC
_
M-FIAM5B / M-FIAM9
+
PC
PR
Remote
RS232
User
Interface
Logic Control
OR
J3
– Master Disable (Local mode)
– Output Sequencing
– Module Status
– BUS-OK
Local Control
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Control 1
–
+
Output
–
Control 2
Control 3
+
PC
PR
–
+
–
7
TECHNICAL OVERVIEW
VIPAC Control
MOD-DIS+, MOD-DIS–
The VIPAC provides the user with choices with respect to how
The MOD-DIS input is an optically coupled input and allows for
the unit is operated. It can be controlled locally by applying
remote disabling of the output(s) of the VIPAC. Applying current
the appropriate “digital” signals to the device.
to the MOD-DIS+, MOD-DIS– input disables the supply.
The minimum input current for disabling the supplies is 3 mA.
BUS-OK
The maximum allowable current is 20 mA.
An internal replica of BUS-OK is wired to the PC pin of all
internal DC-DC converter modules. The modules will be
Electrical Connections
disabled (no DC output) during initial power up of the VIPAC
Status output pair BUS-OK+, BUS-OK– are the collector (+)
until the internal DC input bus voltage to the DC-DC converters
and emitter (–) of an NPN optoisolator output transistor. In a
is sufficient to support full load operation. The BUS-OK status
typical application, the collector terminal BUS-OK+ of the
output reflects the status of this inhibit function. This same
optocoupler can be connected via current limiting resistors to a
logic circuit will shut down the converters when the internal
source no greater than 70 Vdc. These resistors should limit the
DC bus voltage is insufficient to support proper operation.
maximum current to the optocoupler output transistors to 1.5
mA. The emitter terminal BUS-OK– is connected to the return
This shut down
­­
will occur during normal power down, line
of the external source. The status OK condition will set the
dropouts exceeding the hold up time, or internal faults
optocoupler output transistors in saturation and are capable
causing the internal DC bus voltage at the input of the
of sinking up to 1.5 mA with a Vce saturation voltage of 0.4
converters to collapse. The BUS-OK output provides the user
V. Users should be cautioned that although the output of the
with an optically isolated status indication of the internal
VIPAC can be used as the pull-up source, shortly after BUS-OK
DC bus. This output, in AC powered system applications, can
changes from OK (saturated) to NOT OK (high Z), the pull-up
provide power supply status, switch in backup (standby)
voltage will be shut down. If the pull-up source is one of the
sources or initiate “power down” sequences to save volatile
VIPACs outputs, it is advisable to provide a capacitive reservoir
memory contents in the event of a power loss. The time from
in order to maintain the pull-up potential after loss of DC current
BUS-OK deassertion to output shut down is dependent upon
output. Use edge sensing logic to detect assertion of logic outputs,
the value of hold up capacitors used. The VIPAC online design
or a separate source of bias supply voltage (i.e., backup batteries)
tool contains a hold up capacitor calculator which provides
to provide a safe pull-up voltage source regardless of the line
appropriate values.
status.
20 mA max.
MOD-DIS Input
Apply a current of 3–20 mA
to disable output.
V
+ 3
MOD-DIS
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J3
Disable
+
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
VIPAC
+
r
–
2
1.5 mA
max.
+ 7
BUS-OK
–
6
8
INPUT CONNECTIONS
28 Vdc Input
Conn. Pin # Funct. Mating Conn.
J1
1
2
3
GND
– Vin
+ Vin
28 Vdc Input
P/N 21394
I/O Interface
Removable Jumper
IN= Local Control
P/N 22988
7
J3
I/O Interface*
1
Conn.Pin # Funct.
J3
Mating Conn.
1NC
2
MOD-DIS–
3
MOD-DIS+
4GND
5NC
6BUS-OK–
7
BUS-OK+
P/N 22988
J1
P/N 21394
* See detailed description on Pgs 7– 8
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2
3
GND
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–Vin +Vin
9
OUTPUT CONNECTION OPTIONS
Discrete Output Configurations
LugMate
Ring Lugs
(Factory Installed Option)
LugMate Pin Out
Micro LugMate
Pin #
1
Solder
Pad
1
3
Function
– Vout
Rd
Trim-Down
SC
Secondary Control
Ru
Trim-Up
3
+ Vout
1
3
Micro LugMate - with Rd/Ru trim resistor
solder pads. (Design
calculator for trim resistors
located at vicorpower.com)
1
3
1
#4-40 Torque 4 in. lbs.
Rd
Ru
SC
3
Mini/Maxi LugMate
Pin # Conn. Function
1
1
J4
1
5
5
P/N 16385
5
Mating Conn.
– Vout
J4-1
– Vout
J4-2
– Sense
J4-3
Secondary Control
J4-4
+ Sense J4-5
+ Vout Jumper
*Removable
Jumper
P/N 16385
*Removable
+ Vout
*Removable jumper is factory installed for local sensing.
See Pg 22 for details
1
J4
1
5
**For units configured in parallel, one module will have
the SC jumped to the –S and –Out.
5
#10-32 Torque 16 in. lbs.
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OUTPUT CONNECTION OPTIONS
Parallel Output Configurations Shown with the output of two modules connected in parallel using BUS BARS.
LugMate
Ring Lugs
(Factory Installed Option)
LugMate Pin Out
Micro LugMate
Pin #
1
Solder
Pad
1
3
Function
– Vout
Rd
Trim-Down
SC
Secondary Control
Ru
Trim-Up
3
+ Vout
1
Micro LugMate - with Rd/Ru trim
resistor solder pads.
(Design calculator
for trim resistors
located at vicorpower.com)
3
1
3
1
#4-40 Torque 4 in. lbs.
Rd
Ru
SC
3
Mini/Maxi LugMate
Pin # Conn. Function
1
1
1
5
J4
5
P/N 16385
5
Mating Conn.
– Vout
J4-1
– Vout
J4-2
– Sense
J4-3
Secondary Control**
J4-4
+ Sense J4-5
+ Vout Jumper
*Removable
Jumper
P/N 16385
*Removable
+ Vout
*Removable jumper is factory installed for local sensing.
See Pg 22 for details
1
1
5
J4
**For units configured in parallel, one module will have
the SC jumped to the –S and –Out.
5
#10-32 Torque 16 in. lbs.
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OUTPUT CONNECTION OPTIONS
Mating Connector Kits
PlugMate
PlugMate
Pin
Micro PlugMate
PinOut
Out
MAXI PlugMate Pin Out
Item
(Looking into PlugMate)
(Factory Installed Option)
1
13
Micro PlugMate
Vicor P/N 25073
Pin #
1
2
3
4
1
5
12
24
4
8
+Vout
+Vout
–Vout
–Vout
5
6
7
8
+Vout
N/C
SC
–Vout
Mini PlugMate
Tyco Elect. P/N
Vicor P/N
9
18
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.
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1
2
3
4
5
6
7
8
9
10
11
12
25049
M/C
25050
Function
+Vout
+Vout
+Vout
N/C
N/C
N/C
–Vout
–Vout
–Vout
10
11
12
13
14
15
16
17
18
+Vout
+Vout
+Vout
+S
SC
–S
–Vout
–Vout
–Vout
Item
Vicor P/ N
Vicor
P/N
Header
25050 25055
24796
M/C
Item 25056Vicor P/ N
25067
12
24
1
13
Pin #
25073
Header
Pin #
Housing
TYC1-794657-8
1
4
5 1-106529-2
8
Pin
MAXI PlugMate Pin Out
Kit
Vicor P/N 25061
25056
24796 Vicor P/ N
Item
Function
PlugMate
Pin P/N
Out
Mating Connector MicroTyco
Elect.
Maxi PlugMate
M/C 25056 25044
Function
1
10
Vicor P/N 25067
M/C
Pin #
Housing
TYC-794657-8
Pin Out
Pin Mini PlugMate
1-106529-2
Kit
1
2
3
4
5
6
7
8
9
HeaderHeader
25055 25043
Function
Mating Connector
Pin #
ItemVicor P/
Vicor
N P/ N
Function
Pin #
+Vout
13
+Vout
14
+Vout
15
+Vout
16
+Vout
17
N/C
18
SC
19
–Vout
20
–Vout
21
Mini PlugMate Pin Out
–Vout
22
–Vout
23
–Vout
24
1
10
Mating Connector
9
18
Tyco Elect. P/N
Housing
TYC2-794657-4
Pin
1-106529-2
Kit
Header
25043
M/C
25044
Function
+Vout
+Vout
+Vout
+Vout
+Vout
+S
–S
–Vout
–Vout
Item
–Vout Vicor P/ N
–Vout 25049
Header
–Vout
M/C
25050
Vicor P/N
25044
24796
25061
12
CHASSIS CONFIGURATIONS
MVC-A / MVX-A
MVC-B / MVX-B
MVC-D / MVX-D
3 MICRO
2 MINI
2 MICRO
4.96” x 6.8” (126,0 x 172,7 mm)
• Dual or Triple Output
•
Up to 300 W
4.96” x 6.8” (126,0 x 172,7 mm)
•
Single or Dual Output
•
Up to 400 W
•
3.15” x 6.8” (80,0 x 172,7 mm)
Single or Dual Output
•
Up to 200 W
•
•
•
MVC-E / MVX-E
MVC-F / MVX-F
MVC-G / MVX-G
1 MINI
1 MAXI
1 MICRO
3.15” x 6.8” (80,0 x 172,7 mm)
•
Single Output
•
Up to 200 W
3.15” x 9.15” (80,0 x 232,4 mm)
•
Single Output
•
Up to 400 W
•
3.15” x 6.8” (80,0 x 172,7 mm)
Single Output
•
Up to 100 W
•
•
•
Finned Chassis Configurations
Coldplate
Longitudinal
Optional 0.5” Fin
Optional 1” Fin
Transverse
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MOUNTING OPTIONS
Through-hole Mounting
Surface Mounting
Thermal
compound
both sides
VIPAC with integral
finned heat sink
through-hole
mounted
External user
supplied heat sink
VIPAC with external user
supplied heat sink
VIPAC with integral finned heat sink
through-hole mounted
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Coldplate VIPAC
Coldplate VIPAC mounted
to custom thermal interface
Thermal compound
VIPAC with integral
finned heat sink (down)
For proper clearance use:
Long standoff (P/N 23709) for
mounting 1” heat sink fins down.
VIPAC with integral
finned heat sink (up)
Short standoff (P/N 23710) for mounting
0.5” heat sink fins down
or either heat sink fins up.
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0.56
0.75
(14,2)
(19,1)
1.37
(34,8)
0.81
(20,6) 0.50
(12,7)
MECHANICAL DRAWINGS
0.22
(5,6)
0.08
(2,0)
1.31
(33,3)
0.32
(8,1)
1.87
(47,5)
1.00
(25,4)
Please reference the mechanical drawings on the MIL-COTS VIPAC Power System web page at
www.vicorpower.com.
Heat Sink Options
0.56
0.75
(14,2)
(19,1)
1.37
(34,8)
0.81
(20,6) 0.50
(12,7)
0.22
(5,6)
Coldplate
0.08
(2,0)
1.31
(33,3)
0.32
(8,1)
1.87
(47,5)
1.00
(25,4)
0.5” Fin Option
1” Fin Option
Fin spacing and relief
are the same for both Fin options.
MECHANICAL INFORMATION
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
1.6731
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
2.31051
VIPAC Standoff Mounting Kits
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Vicor Kit P/N
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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
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THERMAL MANAGEMENT
Thermal Impedance Specifications (˚C/W)
Airflow
VIPAC
Model Prefix
Chassis
Natural 200 400 600 800 10001200
Config. Heat Sink Convection
(LFM)
(LFM)
(LFM)
(LFM)
(LFM)
(LFM)
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
0.5” L
1.90
0.77
0.53
0.44
0.39
0.36
0.33
2 Mini
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
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
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
MVC-F / MVX-F
1 Maxi
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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
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GENERAL INFORMATION
Input Mating Connector Kits
Part Number Description
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
Output Mating Connector Kits
Suggested Wire Gauge
Part Number Description
Function
23488
For use with: Mini or Maxi LugMate
#20
0A–3A
Kit Contains: One control connector, Vicor P/N 16385
DC Input/Output
Leads
#18
4A–6A
#16
7 A – 10 A
Two ring lugs
Wire Gauge
Application
23489
For use with: Micro LugMate
#14
11 A – 15 A
Kit Contains: Two ring lugs
#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
25061
For use with: Maxi PlugMate
Kit Contains: One 24 pin housing, Vicor P/N 25044
24 pins, Vicor P/N 24796
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
AMP
Pin & Housing Manufacturer
Pin
Housing
Wire Size
Hand
Die Set
Tool P/N
P/N
J1
VIPAC DC Input - 3 Pin
21394
J3
VIPAC I/O Interface - 7 Pin
22988
J4
VIPAC Output Control - 5 Pin
16385
Micro PlugMate mating connector
25073
8 pin
Mini PlugMate mating connector
25067
18 pin
Maxi PlugMate mating connector
25061
24 pin
Tyco
Electronics
JST
Tyco
Electronics
Tyco
Electronics
Tyco
Electronics
Tyco
Electronics
193842-1*
770018-1
14 AWG
12 AWG
07KR-6S
91506-1
69710-1
N/A
58380-1
N/A
644083-5N/A
1-106529-2 794657-8
18-20 AWG
734202-2N/A
1-106529-2 1-794657-8 18-20 AWG
734202-2N/A
1-106529-2 2-794657-4 18-20 AWG
734202-2N/A
* 770251-3 is an acceptable alternative
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APPLICATION TIPS
Selecting Heat Sinks
VIPAC Power System Dissipation
VIPAC Power Systems are rated for operation in ambient
Pout (n)
- Pout (n)
Pdiss = η(n)
1–n
0 .95
Σ
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
Remote Sense
A remote sense feature is provided on outputs configured
configuration can be approximated from the thermal resistance
with Mini or Maxi sized DC-DC converters. The output
of the chassis, ambient operating temperature and total power
sense connections must be terminated either locally or
dissipation, using a few simple formulas shown below.
remotely and may not be left open. The sense lines for
VIPACs configured with a single paralleled output must
Thermal Resistance: Refer to pg 20
be terminated to the same point. VIPACs provided with
the optional LugMate connectors are configured for local
Ambient Temperature: User specified, not to exceed 65˚C
sensing via removable jumpers installed at the factory.
Power Dissipation: Calculated as: (Pout/Efficiency) –Pout
The jumpers will need to be removed if access to the
secondary control function is made via mating connector
Example:
Verify a 400 W, 28 Vdc output VIPAC does not exceed
P/N 16385 and connections will need to be established
95˚C chassis temperature (Tc).
for local or remote sensing.
• MVP-B chassis configuration with 1” transverse heat
sink is selected and 200 LFM airflow is provided.
Wire Routing
Avoid routing wires over VIPAC Power System.
• Thermal resistance (θ) of 0.47˚C/W is obtained from
Do not bundle Input and Output leads together.
the chart on pg 20.
• Ambient operating temperature (TA) specified by the
user is 40˚C.
Parallel Outputs
• VIPAC Power System efficiency (η) is 80% overall.
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 Formula:
Tc = (( Pout – Pout ) x θ) + TA
η
400
= (( –
400) x 0.47) + 40
0.8
above). At no time operate a paralleled output with a load = 87˚C
Conclusion:
This VIPAC will operate in the conditions specified and
applied only to one module! (See Output Connection Options, pages 10 – 12)
not exceed maximum chassis temperature.
Comment:
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Efficiency of a particular VIPAC will depend on the
specific output voltages and operating load conditions.
In general the efficiency of VIPACs 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 the VIPAC and
the front-end section of the VIPAC (using 95% efficiency
for the front end).
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Contact Us:
For Vicor Global Office Locations and Technical Support, please go to: www.vicorpower.com/contact-us or call 800-735-6200.
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
malfunction 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.
vicorpower.com
Rev. 1.7
02/16