Specifications
PFC MegaPAC-EL™ and PFC MegaPAC-HPEL™
Power Factor Corrected AC-DC Switchers
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 1,600 Watts and 2,400 Watts of output powers respectively and have power densi-
ties of 4.3W per cubic inch and 6.5W per cubic inch respectively. The chassis has 8 slots and can provide as many
as 16 outputs for the PFC MegaPAC-EL and 13 outputs for the PFC MegaPAC-HPEL. The PFC MegaPAC-EL
and PFC MegaPAC-HPEL have the same input and output connections, mounting points, and the same dimensions:
3.4”H x 6.0”W x 15.6”L (85,6mm x 152,4mm x 396,8mm). Note that length of older units were 15.5” L
(393,6mm)
A complete power supply is configured at the factory by selecting and inserting up to eight (four to six for the PFC
MegaPAC-HPEL depending on ConverterPACs used) same length slide-in output assemblies called
ConverterPACs. ConverterPACs incorporate one or two 1st and/or 2nd Generation Vicor DC to 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. The PFC MegaPAC-
EL ONLY uses ConverterPACs with 1st Generation Vicor DC to DC converters (VI-200 and VI-J00 modules)
while the PFC MegaPAC-HPEL accepts ConverterPACs with both 1st Generation (VI-200 and VI-J00) and/or 2nd
Generation module (Maxi). Refer to page 7 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 one that is of the same
length and has the desired voltage power rating. For additional flexibility, ConverterPACs can be connected in par-
allel to increase output power (booster ConverterPACs), or in series for higher voltages (total output voltage should
not exceed 500V). 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 23 for more information about this
capability), in addition to useful status indicators. Please consult our Applications Engineering Department if you
have other special requirements.
Standard Features
• Power Factor Correction; 0.99 at 115 Vac, 0.95 at 230 Vac
• Universal Input: 85-264 Vac, 47-500 Hz, or 100-380 Vdc
• Power Outputs: PFC MegaPAC-EL: 1,600W at 230 Vac PFC MegaPAC-HPEL: 2,400W at 230 Vac
1,200W at 115 Vac 1,200W at 115 Vac
• Outputs: PFC MegaPAC-EL: Up to 16 outputs PFC MegaPAC-HPEL: Up to 13 outputs
• Output ripple: <10mVp-p or 0.15% whichever is greater
• Fan Cooled
• Full power to 40°C; half power to 60°C
• Soft start for limiting inrush current
• Conducted EMI meets FCC class “B” and EN 55022 class B specifications
• Harmonic Distortion to EN61000-3-2
• AC Power OK status signal
• Output Sequencing and General Shutdown
(Refer pg. 23. Consult Applications Engineering for automatic sequencing circuitry.)
• Autosense (Refer to page 10 and 13 for more information on Autosense)
• Overcurrent protection on all outputs
• Overvoltage protection on all ConverterPAC outputs (not applicable with VI-J00 modules)
• Overtemperature limiting on all ConverterPAC outputs (not applicable with VI-J00 modules)
• Size: 3.4”H x 6.0”W x 15.5”L (85,6mm x 152,4mm x 393,7mm)
• Safety Agency Approvals: CE Mark,
CTÜVUS
Optional Features
• DC OK status signal
• Current Share Boards - see page 21 and page 22
• Output voltage adjustment range with built-in potentiometer
Rev. 6/2004 Vicor 800-735-6200 Westcor Division 408-522-5280 Applications Engineering 800-927-9474 Pg. 3
PFC MegaPAC-EL/PFC MegaPAC-High Power Low Noise