USER GUIDE UG:105 TM PFC MegaPAC Power Factor Corrected AC-DC Switchers Contents Page Overview 1 Standard Features 2 Optional Features 2 Mechanical Considerations 3 MegaPAC Dos and Donts 3 Technical Description 4 Configuring and Reconfiguring MegaPACs 5 ConverterPAC Functional Description 6 Part Numbering 8 Overview ConverterPAC Output and Connector Pin Identification The PFC MegaPAC family of supplies combine Power Factor Correction (PFC) with the inherent for the PFC MegaPAC 10 configurability of all Vicor MegaPAC products. This design guide covers four model variations: PFC MegaPAC 1. PFC MegaPAC 1600W max, standard chassis Quick Install Instructions 12 2. PFC MegaPAC MI 1600W max, rugged COTS chassis PFC MegaPAC Mechanical Drawing 15 3. PFC MegaPAC High Power 2400W max, standard chassis Interface Connections 16 4. PFC MegaPAC High Power MI 2400W max, rugged COTS chassis Output Studs 24 All PFC MegaPACs have the same input and output connections, mounting points and the same dimensions: PFC MegaPAC Output Power Derating 25 The extended length (-EL) chassis is covered in a different design guide. PFC MegaPAC Connector Kit A complete power supply is configured at the factory by selecting and inserting up to eight same-length (43075) Listing 25 slide-in output assemblies called ConverterPACs. ConverterPACs incorporate one (or more) VI-200 / VI-J00. Maxi Vicor DC-DC converters are available in a wide selection of output voltage and Current Share Boards - power levels. The net result is a power supply that offers the advantages of a custom supply, but is Optional Feature 26 assembled from standard and modular building blocks. Currently, the standard-power chassis uses ConverterPACs with VI-200 / VI-J00 Vicor DC-DC converters while the high-power chassis accepts Current Share Boards - ConverterPACs with both VI-200 / VI-J00 and / or Maxi module. (Refer to Page 7 for a brief overview of Optional Feature Diagram 28 the ConverterPACs used). Low Leakage Version 29 Output Sequencing 30 Note: This user guide contains references to parts and products that are no longer available for new designs. They remain included for reference only. UG:105 Page 1Manufactured 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 30 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 n Power Factor Correction 0.99 at 115V , 0.95 at 230V - both at full load (47 63Hz) AC AC n Universal Input: 85 264V , 47 500Hz or 100 380V AC DC n Power Outputs: Standard Chassis: 1,600W at 230V High Power Chassis: 2,400W at 230V AC AC 1,200W at 115V 1,200W at 115V AC AC n Outputs: Standard Chassis: Up to 16 outputs High Power Chassis: Up to 16 outputs n Fan Cooled n Full-power to 40C half power to 60C n Soft start for limiting inrush current n Conducted EMI meets FCC Class A and EN 55022 Class A Some configurations meet Class B Consult Factory n Harmonic Distortion to EN61000-3-2 n RoHS compliant available n Output sequencing and general shutdown (Refer to Page 30. Consult Applications Engineering for automatic-sequencing circuitry) n Overcurrent protection on all outputs n Overvoltage protection and overtemperature limiting on all ConverterPAC outputs (not applicable with VI-J00) n Size: 3.4 x 6.0 x 12.4in 313,9 x 152,4 x 309mm n Safety Agency Approvals: cURus, cTVus, CE Mark Optional Features n DC OK status signal n Current Share Boards: see Pages 26 28 n Output voltage adjustment range with built-in potentiometer n Low leakage version available upon request: see Page 29 n 40C operation n Conformal coating (MI versions only) UG:105 Page 2