Vicor VIPAC User Manual
2
VIPAC Array
Family
of DC-DC Converters
Up to 750 Watts
Description & Installation Guide
Product Description
The VIPAC Array is a highly flexible system of DC input, power building-blocks that can
be configured with as many as four user-definable outputs on a low profile, coldplate
chassis. VIPAC Array offers the convenience of a prepackaged, chassis mount solution
with the performance and power density of Vicor’s Maxi, Mini, Micro, DC-DC converters.
Using Vicor’s PowerBench design tools, designers are able to quickly specify VIPAC
Arrays with standard inputs of 24, 28, 48, 72, 110,150, 300 or 375 Vdc and standard
outputs from 2 to 48 Vdc at power levels up to 600 Watts per output. A total of 8
standard chassis configurations offers the user a choice of power and mechanical options
to fit any budget or design. Short cycle time and rapid delivery make VIPAC Array a
valuable tool for power system prototyping and development efforts as well.
Product Overview Application Tips
32
VIPAC Arrays are ideal for use in distributed and modular power systems where power
density and reliable operation are critical. A current share option is available on single
module configurations enabling Arrays of identical output voltage and current ratings to
be used in applications requiring either redundant operation or kilowatts of power.
The 300 and 375 Vdc input versions can be coupled to a bulk AC Front-end to create a
modular, scalable power supply serving a variety of power architectures from centralized
to distributed. VIPAC Arrays include internal fusing, a global enable/disable function and
connectorized input and output terminations to speed system installation while a
versatile coldplate chassis simplifies thermal management and mounting.
A
E
B
C
D
Remote Sense
A remote sense feature is provided on outputs configured with Mini or
Maxi sized DC-DC converters. The output sense connections must be
terminated either locally or remotely and should not be left open. VIPAC
Arrays 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 16385 and connections will
need to be established for local or remote sensing.
Wire Routing
Avoid routing wires over the VIPAC Array Power System.
Do not bundle Input and Output leads together.
Parallel Outputs
The VIPAC Array can be configured with parallel modules for increased
power or redundancy. When output terminations other than the
LugMate are specified the user must properly connect the output and
sense terminals. At no time operate a paralleled output with a load
applied to only one module! (See Output Connections)
A D
Vicor’s Maxi, Mini, Micro
DC-DC Converters
Output Voltages 0.5 – 48 Vdc
50 – 600 W / Output
(1/4 Brick Modules Shown)
B
Choice of Output Termination
LugMate
PlugMate
C
Low Profile Coldplate
Wide Operating Temperature Range
Up to 95°C Chassis
Up to 65°C Ambient
* Note: 24, 28, 48, 72, 110, & 150 V input VIPAC Arrays are designed primarily for military COTS
and industrial applications and do not carry safety agency approvals.
Standard Input Voltage Ranges
10 – 36 Vdc*
18 – 36 Vdc*
36 – 75 Vdc*
43 – 110 Vdc*
66 – 154 Vdc*
100 – 200 Vdc*
180 – 375 Vdc
250 – 425 Vdc
See pp. 4 – 7 for input connections.
E
Features
Optional current share (see overview)
Onboard fusing
4 5
Input /Output Connections Input /Output Connections
Input Connector
1
11
Pin # Function
1-4 –Vin
5-7 +Vin
8 NC /PR bus
9 PE protective earth
10 – Remote enable
11-13 –Vin
14-17 +Vin
18 NC /PR bus
19 PE protective earth
20 + Remote enable
VA-J & VA-K configurations only
(300 & 375 Vin single Maxi &
single Mini)
Pin # Function
1-3 –Vin
4-6 +Vin
7 NC
8 NC /PR bus
9 PE protective earth
10 – Remote enable
11-13 –Vin
14-16 +Vin
17 NC
18 NC /PR bus
19 PE protective earth
20 + Remote enable
To disable output(s)
apply +5 Vdc
between pins
10 and 20 in the
polarity indicated
10
20
#4-40 torque 4 in. lbs.
Discrete Output
Mating Connector
Vicor part # Amp part #
Housing 24795 2-794657-0
Contacts 24796 1-106529-2
Kit 24828
NOTE: Contacts accept #22-#18 Gage Wire.
1
5
Parallel Output
Shown with the output(s) of two
modules connected in parallel
using factory installed bus bar.
*
1
J4
5
P/N 16385
Factory Installed Micro LugMate
3
1
Solder
Pin # Pad Function
1 – Vout
Rd Trim Down
SC Secondary Control
Ru Trim Up
3 + Vout
Consult design calculator for Rd/Ru trim resistor
values located at vicorpower.com.
Factory Installed
Pin # Conn. Function Mating Conn.
1 – Vout
J4-1 – Vout
J4-2 – Sense
*Removable
Jumper
J4-3 Secondary Control P/N 16385
J4-4 + Sense
J4-5 + Vout
*Removable
Jumper
5 + Vout
*Removable jumpers in J4 are factory installed for
local sensing. For remote sensing the +Sense pins
should be tied to the same point on the +Out power
bus; the -Sense pins should be tied to the same point
the -Out power bus.
#10-32 torque 16 in. lbs.
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