12 1-800-735-6200 Off-Line Front Ends Single or Three Phase Strappable Features ■ 250W, 500W, 750W, 115/230Vac Strappable Single-Phase ■ 1.5, 3, 5 kW, 208Vac Three-Phase ■ 20-50 mS Holdup ■ UL, CSA, TÜV, VDE, BABT ■ FCC/VDE Class B (single-phase) ■ FCC/VDE Class A (three-phase) ■ BUS OK, AC OK, DC OK Status Signal ■ 96-98% Efficiency ■ PC and Chassis Mount ■ VI-26X, VI-J6X Series Compatible ■ CE Marked Product Highlights From AC line in, to highly regulated DC out, Vicor offers the total design solution through a complete family of off-line front end and DC-DC modular power components. Vicor’s family of off-line front ends interface VI-260 and VI-J60 series DC-DC converters, and MegaMods, to 100, 115, 230 or 240Vac single-phase and 208Vac three-phase mains. In addition, front ends provide conducted EMI/RFI filtering to FCC/VDE (Class B singlephase, Class A three-phase), transient surge protection, active inrush limiting, a BUS OK status output (suitable for controlling Vicor DC-DC converter modules via their Gate In pin) and an AC OK status output for system use in the event of loss of the AC line. Operating Temperature (Free Convection) C: 0°C to +50°C (750W: +45°C) I: -20°C to +50°C (750W: +45°C) Storage Temperature -40°C to +80°C Rev 1 1 of 2 Front End Specifications: (typical at T = 25˚C, nominal line, 75% load, unless otherwise specified) AC Line Input With Range Strap Without Range Strap Line Frequency Line Inrush Current 115Vac Operation 230Vac Operation 240Vac Operation Single Phase (250, 500, 750W) Three Phase (1.5, 3, 5 kW) Strappable 115/230Vac 208 Vac +20%/–10% (Wye or Delta, ø to ø) N/A N/A 47 to 63 Hz (“C” Grade) 47 to 440 Hz (“I” Grade) 90 Vac to 135Vac 180 Vac to 270Vac 47 to 63 Hz (“C” Grade) 47 to 440 Hz (“I” Grade) 35A at peak line 67A at peak line 52A at peak line AC Leakage Current 1.9 mA max. at 250Vac, 63 Hz (“C ” Grade) 3.2 mA max. at 208Vac, 63 Hz Power Factor (at full load) 0.52 to 0.65 (at low line input) 0.9 (typical at nom. line) Holdup Time (at full load) Low Line Nominal Line AC Fail Warning Time (at full load) 250W (60 Hz): 4 ms min. 500, 750W (60 Hz): 7 ms min. 250W (60 Hz): 27 ms min. 500, 750W (60 Hz): 29 ms. min. 250W: None 500, 750W: 6 ms min. 20 ms min. (47 Hz) 5 ms min. Module Gate Control Output Called BUS OK (open drain FET, non-isolated, referenced to –DC output) Called Module Enable ENABLE Active High (FET cutoff) Vds max. 18V transorb clamp Power up threshold DC bus: 250W: 216V, ±12% 500, 750W: 244, ±3.5% Active High (FET cutoff) Power-up threshold >227V Vds max: 15V zener clamp ENABLE Inactive state (DC BUS <190V ±5%) Inactive state (DC BUS <187Vdc) Current sinking 100 mA @ Current sinking 100 mA @ .3 Vds max., threshold DC bus .3Vds max. 250W: 172V, ±16% 500, 750W: 175V, ±3.5% AC OK and BUS OK Status Outputs (optically isolated, transistor output; 500W, 750W only) Off State Breakdown Voltage On State Voltage On State Current On State Threshold (no load) Off State Threshold (load dependent) 500, 750W only AC OK and BUS OK 70Vce max. 70 Vce max. .4Vce (sat.) max. at 1 mA 15 mA max. 80-89Vac .4 Vce (sat.) max. at 1 mA 15 mA max. >210 Vdc/187Vac 85-76Vac <205 Vdc/<182Vac VDE 0871/FCC part 15, Class B AC line (both phases) to GND or case 1.5 kVAC; 2121Vdc VDE 0871/FCC part 15, Class A AC line (all phases) to GND or case 1.5 kVAC; 2121Vdc Conducted EMI/RFI Dielectric Withstand Transient Surge Withstand IEC 61000-4-5, Level 3 Capability (with no disruption of function) Common Mode 1.2/50 µs, 2 kV, either polarity 0 to 360 degree phase angle with respect to AC line Normal Mode 1.2/50 µs, 1 kV pulse, either polarity 0 to 360 degree phase angle with respect to AC line IEC 61000-4-5, Level 3 1.2/50 µs, 2 kV, either polarity 0 to 360 degree phase angle with respect to AC line 1.2/50 µs, 1 kV pulse, either polarity 0 to 360 degree phase angle with respect to AC line 12 1-800-735-6200 Rev 1 2 of 2 Thermal Considerations Free Convection Derating Front End Selection Chart • 250W: Derate output power linearly at 7.2W/˚C over 50˚C. • 500W: Derate output power linearly at 14.3W/˚C over 50˚C. • 750W: Derate output power linearly at 18.8W/˚C over 45˚C. Forced Convection: The curves below represent worst case data for chassis mounted (enclosed) front ends, i.e., low line, full load. System conditions such as higher line voltage, lighter load or PC mount versions of the front ends will increase reliability if the data here is used as the nominal design criteria. The sigmoid shape of the curves at low air flows is due to the chassis mount cover restricting the airflow to the inboard components until an airflow of approximately 200 LFM is achieved. Thereafter, the velocity of air rushing over the cover causes air to be pulled in through the side perforations, causing a rapid improvement of cooling of internal components. Max. Amb. Temp. vs. Airflow (LFM) Over Cover (Full Load, 90 Vac In, Chassis Mount) Model Single Phase VI-FPE6-CUX VI-FKE6-CUX VI-FPE6-CQX VI-FKE6-CQX VI-FPE6-CMX VI-FKE6-CMX Mounting PC Chassis Output Power (Watts) 250 500 750 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Three Phase VI-TKY6-CHX VI-TKY6-CEX VI-TRY6-CCX 1,500 ■ ■ ■ ■ 3,000 5,000 ■ ■ Front End Connection Diagram INPUT OUTPUT (500W, 750W FRONT END ONLY) EARTH GROUND AC OK+ F1 A.C. MAINS Earth Ground AC OK– L1 (Phase) L2 (Neutral) CONNECT ST1 TO ST2 FOR 115Vac OPEN FOR 230Vac ST1 ST2 Vce sat. <0.4V @ 1.5 mA Ground All Baseplates To Earth Ground +V <70V F2 +IN GATE IN BUS OK - IN VDC– F3 +IN GATE IN VDC+ - IN 250W USE #4 HARDWARE TORQUED @ 5 in.-lbs. (4 PLACES) Ambient Temperature °C 80 70 +IN GATE IN FOR SAFE OPERATION, REPLACE ONLY WITH RECOMMENDED FUSES - IN Fn +IN GATE IN - IN VI-x6x MODULE VI-x6x MODULE 500W — FUSE 1: 12A/250V BUSSMAN ABC-12, LITTLEFUSE 314-012 FUSES 2,3,4...n: 3A/250V BUSSMAN PC-TRON 50 40 0 100 200 300 400 500 600 Airflow (LFM) 500W 750W — FUSE 1: 15A/250V BUSSMAN ABC-15, LITTLEFUSE 314-015 FUSES 2,3,4...n: 3A/250V BUSSMAN PC-TRON Notes: 1. If input power is applied with the DC output BUS shorted, the active inrush circuitry will usually prevent Fuse 1 from blowing. Remove power, clear shorts, wait a few minutes and reapply input power. 80 Ambient Temperature °C VI-x6x MODULE F4 FUSING INFORMATION 250W — FUSE 1: 6.3A/250V (IEC 5x20 mm) BUSSMAN GDB-6.3 OR 7A/250V (3AG 1/4" X 1 1/4") LITTLEFUSE 314-007 OR BUSSMAN MTH-7 OR ABC-7 FUSES 2,3,4...n: 3A/250V BUSSMAN PC-TRON 60 VI-x6x MODULE 70 2. If unit is strapped for 115V operation and 230V is applied, the internal overvoltage crowbar will clear Fuse 1. Replace fuse, strap correctly and reapply power. 60 3. To control EMI/RFI most effectively, the return path to earth ground from either the front end or modules should be made via a good RF ground. User must assure proper grounding for safe operation. 50 40 0 100 200 300 400 500 600 400 500 600 Airflow (LFM) 750W Ambient Temperature °C 80 70 60 50 40 0 100 200 300 Airflow (LFM) For the latest Vicor Product Information: www.vicorpower.com 107