Input voltages: V DC outputs: 48 V Programmable output: to 110% Regulation: �0.5% no load to full load Efficiency: to 90% Max operating temp: 100�C, full load Power density: to 120 W/cubic inch Parallelable, with N+M fault tolerance Low noise ZCS/ZVS architecture

These DC-DC converter modules use advanced power processing, control and packaging technologies to provide the performance, flexibility, reliability and cost effectiveness of a mature power component. High frequency ZCS/ZVS switching provide high power density with low noise and high efficiency. 12,7 mm

Parameter +In to �In voltage 24 Vin 48 Vin 300 Vin 375 Vin PC to �In voltage PR to �In voltage SC to �Out voltage �Sense to �Out voltage Isolation voltage (in to out) Isolation voltage (in to base) Isolation voltage (out to base) Operating temperature Storage temperature Pin soldering temperature Pin soldering temperature Mounting torque -20 to Vdc Vrms �C �F (�C) �F (�C) in-lbs (N-m) <5 sec; wave solder <7 sec; hand solder 6 each, or M3 Rating Unit Notes

Off-line systems with autoranging or PFC frontends, industrial and process control, distributed power, medical, ATE, communications, defense, aerospace

Parameter Baseplate to sink; flat, greased surface Baseplate to sink; thermal pad (P/N 20263) Baseplate to ambient Baseplate to ambient; 1000 LFM Thermal capacity Min Typ Max Unit �C/Watt Watt-sec/�C

For a description of pin options, see page 6. Baseplate options include slotted flanges, threaded and through-hole. See page 7 for dimensions. For other package sizes and power levels, see the FasTrak Mini (half size) and FasTrak Micro (quarter size) datasheets.

Electrical characteristics apply over the full operating range of input voltage, output load (resistive) and baseplate temperature, unless otherwise specified. All temperatures refer to the operating temperature at the center of the baseplate.

Parameter Input voltage 24 Vin 48 Vin 300 Vin 375 Vin Output voltage setpoint Vdc % Nominal input; full load; <100 ms surge withstand Min Typ Max Surge Withstand Unit Notes

Parameter Efficiency (typ.) Ripple and noise, p-p (typ.) Output OVP setpoint (nom.) Dissipation, standby (typ.) Load regulation (max.) Current limit (typ.) Short circuit current (typ.) 48V 54V Unit % mV Volts Watts Vout % Iout % Iout Notes Nominal input; 80% load; 25�C Nominal input; full load; 25�C; 20 MHz BW 25�C; recycle input voltage to restart ( 1 minute off ) No load; nominal input No load to full load; nominal input Output voltage 95% of nominal Output voltage <250 mV

Parameter Undervoltage turn-on Undervoltage turn-off Overvoltage turn-off/on 24 Vin 175 153 N/A 375 Vin 212 446 Units Vdc Notes Typical value Typical value Typical value

Parameter Line regulation Temperature regulation Power sharing accuracy Programming range 10 Min Typ Max Unit �C % Notes Low line to high line; full load Over operating temperature range 100% of full load Of nominal output voltage. For trimming below 90% of nominal, a minimum load 10% of maximum rated power may be required.

Note: For important information relative to applications where the converter modules are subject to continuous dynamic loading, contact Vicor applications engineering at 800-927-9474. Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 FasTrak Maxi E-Grade Family Rev. 1.1 Page of 8

PRIMARY SIDE (PC = Primary Control; PR = Parallel) PC bias voltage current limit PC module disable PC module enable delay PC module alarm PR emitter amplitude PR emitter current PR receiver impedance PR receiver threshold PR drive capability SECONDARY SIDE (SC = Secondary Control) SC bandgap voltage SC resistance SC capacitance SC module alarm Vdc ohms �F Vdc With open trim; referenced to �Sense. See Fig. 6 Referenced to �Sense Vdc mA Vdc ms Vavg Volts mA ohms Volts modules 25�C Minimum pulse width: 20ns Without PR buffer amplifier UV, OV, OT, module fault. See Figs. 2 and 4 PR load >30 ohms, pF PC current mA PC voltage = 5.5V Must be able to sink 4 mA. See Fig. 1

Parameter Remote sense (total drop) Isolation voltage (in to out) Isolation voltage (in to base) Isolation voltage (out to base) Isolation resistance (in to out) Weight Temperature limiting Agency approvals cULus, T�V, 8 (227) Min Typ Max 0.5 Unit Vdc Vrms megohms ounces (grams) �C See Figs. 2 and CSA60950, IEC60950. With a fuse in series with the +Input Notes 0.25V per leg (senses must be closed) Complies with reinforced insulation requirements Complies with basic insulation requirements Complies with operational insulation requirements

Note: Specifications are subject to change without notice. The latest data sheets for individual models are available on the Vicor website at vicorpower.com.