UG:106
vicorpower.com
Applications Engineering: 800 927.9474
Page 1
Autoranging MegaPAC
TM
AC-DC Switcher
USER GUIDE | UG:106
June 2013
Overview
The Autoranging MegaPAC AC-DC switcher allows users to instantly configure high
efficiency, off-line power supplies that operate on either 115 or 230 Vac (47-500 Hz), or
260-380 Vdc. The Autoranging MegaPAC provides up to 1,600 W of output power with a
power density of 6.6 W per cubic inch. The chassis has 8 slots and can provide up to 16
isolated outputs. Its dimensions are 3.4"H x 6.0"W x 11.9"L (86,4 x 152,4 x 302,3).
A complete power supply is configured at the factory by selecting and inserting up to
eight same length slide-in output assemblies called ConverterPACs. ConverterPACs
incorporate one or two VI-200/VI-J00 and/or Maxi Vicor DC to DC converters and are
available in a wide array of output voltage and power levels. The net result is a power
supply that offers the advantages of a custom supply, but is assembled from standard
and modular building blocks. For detailed information about ConverterPACs, refer
to the ConverterPAC information sheets. Currently, the ConverterPACs used in the
Autoranging MegaPAC only use VI-200/VI-J00 Vicor DC to DC converters.
Refer to page 6 for a brief overview of the ConverterPACs used.
Manufactured at Westcor, a division of Vicor, the entire family of MegaPAC power
supplies is completely user-configurable. If output requirements change, i.e., more
power or a different output voltage is needed, upgrading is easy: simply unlock a
single screw and replace the slide-in ConverterPAC assembly with a same length
ConverterPAC and one that has the desired voltage power rating. For additional
flexibility, ConverterPACs can be connected in parallel to increase output power
(booster ConverterPACs), or in series for higher voltages (total output voltage should
not exceed 400 V). The driver is to the left of the boosters when looking at the output
end of the supply. A user-friendly interface provides control and output sequencing
capability, in addition to useful status indicators. Please consult our Applications
Engineering Department if you have other special requirements.
Contents Page
Overview
1
of Product
Mechanical 2
Considerations
MegaPAC 3
Do’s and Don’ts
Technical Description
3
Configuring and
5
Reconfiguring
MegaPACs
ConverterPAC 6
Description
Part Numbering
7
ConverterPAC Output
9
and Connector Pin
Identification
Quick Install
10
Instructions
Mechanical Drawings
13
Interface Connections 14
Specifications 20
Current Share Boards
21
Low Leakage Version
23
