UG:119
Page 1
PFC MegaPAC-EL
TM
PFC MegaPAC-HPEL
TM
Power Factor Corrected AC-DC Switchers
USER GUIDE | UG:119
Overview
The PFC MegaPAC-EL and PFC MegaPAC High Power Low Noise (HPEL) combine power factor
correction (PFC) with the configurability of the MegaPAC family of power supplies. The
PFC MegaPAC-EL and PFC MegaPAC-HPEL provide up to 1,600W and 2,400W of output power
respectively and have power densities of 4.3W/in
3
and 6.5W/in
3
respectively. The chassis has eight slots
and can provide as many as 16 outputs. The PFC MegaPAC-EL and PFC MegaPAC-HPEL have the same
input and output connections, mounting points and the same dimensions: 3.4 x 6.0 x 15.6in
[85,6 x 152,4 x 396,2mm]. Note that length of older units were 15.5in [393,6mm].
A complete power supply is configured at the factory by selecting and inserting up to eight (four – six
for the PFC MegaPAC-HPEL depending on ConverterPACs used) same length slide-in output assemblies
called ConverterPACs. ConverterPACs™ incorporate one or two VI-200™ / VI-J00™ and / or Maxi Vicor
DC-DC converters and are available in a wide selection 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.
Manufactured at 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 one that is
of the same length and 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 400V). 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 (see Page 16 for more information about this capability), in addition to
useful status indicators. Please consult our Applications Engineering Department if you have other
special requirements.
Note:
This user guide contains references to parts and products that are no longer available for new designs.
They remain included for reference only.
Contents Page
Configuring and
Reconfiguring MegaPACs
ConverterPAC Functional
Description 7
ConverterPAC Output and
Connector Pin Identification 10
PFC MegaPAC-EL and -HPEL
Quick Install Instructions
PFC MegaPAC-EL and PFC
MegaPAC-HPEL
Mechanical Drawing
PFC MegaPAC-EL/HPEL
Connector Kit (19-130040)
Listing 24
Connector Kit for
Dual Outputs only -
MegaPAC Family 19-130042 24
Current Share Boards -
Optional Feature
