Data Sheet 28V Wide Input Maxi Family DC-DC Converter Module Features • • • • • • • • • • • • RoHS Compliant (with F or G pin option) DC input range: 10 – 36 V* Input surge withstand: 50 V for 100 ms DC output: 3.3 – 48 V Programmable output: 10 to 110% Regulation: ±0.2% no load to full load Efficiency: Up to 85% Maximum operating temp: 100°C Power density: up to 40 W per cubic inch Height above board: 0.43 in. (10,9 mm) Parallelable, with N+M fault tolerance Low noise ZCS/ZVS architecture Product Overview 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 provides high power density with low noise and high efficiency. Shown actual size: 4.6 x 2.2 x 0.5 in 117 x 56 x 12,7 mm Absolute Maximum Ratings Parameter Rating Unit +In to –In voltage -0.5 to +53 Vdc PC to –In voltage -0.5 to +7.0 Vdc PR to –In voltage -0.5 to +7.0 Vdc SC to -Out voltage -0.5 to +1.5 Vdc 1.0 Vdc Applications -Sense to -Out voltage Industrial and process control, distributed power, medical, ATE, communications, defense, aerospace. +Out to -Out, +Sense to -Out *9-36 V DC input range for 5, 12, 24, and 28 V outputs. 3000 Vrms Test voltage in to base 1500 Vrms Test voltage Test voltage 500 Vrms Operating Temperature out to base -55 to +100 °C Storage Temperature -65 to +125 °C 500 (260) °F (°C) <5 sec; wave solder 750 (390) °F (°C) <7 sec; hand solder 5 (0.57) in-lbs (N-m) Mounting torque V28A Output Voltage 3V 3 5 6.5 8 12 15 24 28 36 48 = = = = = = = = = = 3.3 V 5V 6.5 V 8V 12 V 15 V 24 V 28 V 36 V 48 V Product Grade Temperatures (°C) Grade Operating Storage C = - 20 to +100 - 40 to +125 T = - 40 to +100 - 40 to +125 H = - 40 to +100 - 55 to +125 M = - 55 to +100 - 65 to +125 See Module Output Specifications Isolation voltage in to out Pin soldering temperature Part Numbering e.g. V28A12T200BL2 Notes B Output Power Vout Pout 3.3 V 150 W 5V 175 W 6.5 V 200 W 8V 200 W 12 V 200 W 15 V 200 W 24 V 200 W 28 V 200 W 36 V 200 W 48 V 200 W Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 Pin Style Blank: Short Tin/Lead L: Long Tin/Lead S: Short ModuMate N: Long ModuMate F: Short RoHS G: Long RoHS Baseplate Blank: Slotted 2: Threaded 3: Through-hole 28 V Maxi Family Set your site on VICOR at vicorpower.com M-Grade M-Grade 6 each For a description of pin options, see page 8. Baseplate options include slotted flanges, threaded and through-hole. See page 9 for dimensions. Rev. 1.7 Page 1 of 10 MODULE FAMILY ELECTRICAL CHARACTERISTICS 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. MODULE INPUT SPECIFICATIONS Parameter Min Typ Max Unit Notes Operating input voltage 10 28 36 Vdc 9 to 36 V input operation (from 9 to 10 V input, available power is reduced to 75% of max rating) is present on the following output voltages: 5, 12, 24, and 28 V. 50 Vdc <100 ms 9.9 Vdc For 5, 12, 24 and 28 V modules, undervoltage turn-on is 8.9 Vdc max. Vdc For 5, 12, 24 and 28 V modules, undervoltage turn-off is 8.5 Vdc typ. Input surge withstand Undervoltage turn-on 9.75 Undervoltage turn-off 9.5 Overvoltage turn-off/on 36.3 37.8 39.6 Vdc 4.0 mA Min Typ Max ±1% Vout nom Nominal input; full load; 25°C Line regulation ±0.02 ±0.20 % Low line to high line; full load Temperature regulation ±0.002 ±0.005 % / °C Power sharing accuracy ±2 ±5 % 110 % Disabled input current PC pin low MODULE OUTPUT SPECIFICATIONS Parameter Output voltage set point Unit Notes Over operating temperature range 10 to 100% of full load Of nominal output voltage. For trimming below 90% Programming range 10 of nominal, a minimum load of 10% of maximum rated power may be required. +Out to -Out, +Sense to -Out – Absolute Maximum Ratings 3.3 V -0.5 to 4.7 Vdc Externally Applied 5V -0.5 to 7.0 Vdc Externally Applied 6.5 V -0.5 to 9.0 Vdc Externally Applied 8V -0.5 to 10.9 Vdc Externally Applied 12 V -0.5 to 16.1 Vdc Externally Applied 15 V -0.5 to 20.0 Vdc Externally Applied 24 V -0.5 to 31.7 Vdc Externally Applied 28 V -0.5 to 36.9 Vdc Externally Applied 36 V -0.5 to 47.2 Vdc Externally Applied 48 V -0.5 to 62.9 Vdc Externally Applied THERMAL RESISTANCE AND CAPACITY Parameter Min Typ Max Unit Baseplate to sink; flat, greased surface 0.08 °C / Watt Baseplate to sink; thermal pad (P/N 20265) 0.07 °C / Watt Baseplate to ambient 4.9 °C / Watt Baseplate to ambient; 1000 LFM 1.1 °C / Watt Thermal capacity 165 Watt-sec/°C Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 28 V Maxi Family Set your site on VICOR at vicorpower.com Rev. 1.7 Page 2 of 10 MODULE FAMILY ELECTRICAL CHARACTERISTICS (CONT.) MODULE CONTROL SPECIFICATIONS Parameter Min Typ Max Unit Notes PRIMARY SIDE (PC = Primary Control; PR = Parallel) PC bias voltage current limit 5.50 1.5 5.75 2.1 6.00 3.0 Vdc mA PC current = 1.0 mA PC voltage = 5.5 V PC module disable 2.3 2.6 2.9 Vdc Must be able to sink 4 mA. See Fig. 1 4 7 ms 0.5 Vavg UV, OV, OT, module fault. See Figs. 2 and 4 PC module enable delay PC module alarm PC resistance 0.9 1.0 1.1 MΩ See Fig. 2 PR emitter amplitude 5.7 5.9 6.1 Volts PR load >30 Ω, < 30 pF PR emitter current 150 PR receiver impedance 375 500 625 Ω PR receiver threshold 2.4 2.5 2.6 Volts Minimum pulse width: 20 ns 12 modules Without PR buffer amplifier mA PR drive capability 25°C SECONDARY SIDE (SC = Secondary Control) SC bandgap voltage 1.21 1.23 1.25 Vdc SC resistance 990 1000 1010 Ω SC capacitance SC module alarm Referenced to –Sense 0.033 µF 0 Vdc With open trim; referenced to –Sense. See Fig. 6 Unit Notes MODULE GENERAL SPECIFICATIONS Parameter Min Typ Remote sense (total drop) Max Vdc 0.25 V per leg (senses must be closed) Isolation voltage (in to out) 3000 0.5 Vrms Complies with reinforced insulation requirements Isolation voltage (in to base) 1500 Vrms Complies with basic insulation requirements Isolation voltage (out to base) 500 Vrms Complies with operational insulation requirements Isolation resistance (in to out) Weight Temperature limiting Agency approvals 10 7.4 (209.3) 8.2 (232.5) 100 115 MΩ 9.0 (255.7) ounces (grams) °C See Figs. 2 and 4 UL60950-1, EN60950-1, CSA60950-1, IEC60950-1 With a fuse in series with the +Input cURus, TÜV, CE Note: Specifications are subject to change without notice. Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 28 V Maxi Family Set your site on VICOR at vicorpower.com Rev. 1.7 Page 3 of 10 MODULE SPECIFIC OPERATING SPECIFICATIONS 3.3 Vout, 150 W (e.g. V28A3V3C150BL) Parameter Efficiency Ripple and noise Output OVP set point Dissipation, stand-by Load regulation Load Current Current limit Short circuit current Min 77.3 4.14 0 46.4 31.8 Typ 78.6 80 4.30 11.4 ±0.02 52.3 52.3 Max 100 4.46 12.7 ±0.2 45.45 61.5 61.5 Unit % mV Volts Watts % Amps Amps Amps Notes Nominal input; full load; 25°C p-p; Nominal input; full load; 20 MHz bandwith 25°C; recycle input voltage to restart (>100 ms off) No load No load to full load; nominal input Unit % mV Volts Watts % Amps Amps Amps Notes Nominal input; full load; 25°C p-p; Nominal input; full load; 20 MHz bandwith 25°C; recycle input voltage to restart (>100 ms off) No load No load to full load; nominal input Unit % mV Volts Watts % Amps Amps Amps Notes Nominal input; full load; 25°C p-p; Nominal input; full load; 20 MHz bandwith 25°C; recycle input voltage to restart (>100 ms off) No load No load to full load; nominal input Unit % mV Volts Watts % Amps Amps Amps Notes Nominal input; full load; 25°C p-p; Nominal input; full load; 20 MHz bandwith 25°C; recycle input voltage to restart (>100 ms off) No load No load to full load; nominal input Unit % mV Volts Watts % Amps Amps Amps Notes Nominal input; full load; 25°C p-p; Nominal input; full load; 20 MHz bandwith 25°C; recycle input voltage to restart (>100 ms off) No load No load to full load; nominal input Output voltage 95% of nominal Output voltage <250 mV 5 Vout, 175 W (e.g. V28A5C175BL) Parameter Efficiency Ripple and noise Output OVP set point Dissipation, stand-by Load regulation Load Curent Current limit Short circuit current Min 75.7 6.03 0 35.7 24.5 Typ 76.8 280 6.25 14.4 ±0.02 40.3 40.3 Max 350 6.47 15.5 ±0.2 35 49.0 47.3 Output voltage 95% of nominal Output voltage <250 mV 6.5 Vout, 200 W (e.g. V28A6V5C200BL) Parameter Efficiency Ripple and noise Output OVP setpoint Dissipation, standby Load regulation Output Current Current limit Short circuit current Min 76.8 7.7 0 31.4 21.5 Typ 78.8 275 7.98 11.6 ±0.02 35.4 35.4 Max 344 8.26 12.2 ±0.2 30.77 41.6 41.6 Output voltage 95% of nominal Output voltage <250 mV 8 Vout, 200 W (e.g. V28A8C200BL) Parameter Efficiency Ripple and noise Output OVP setpoint Dissipation, standby Load regulation Output Current Current limit Short circuit current Min 79.5 9.36 0 25.5 17.5 Typ 80.9 325 9.7 15.6 ±0.02 28.8 28.8 Max 407 10.1 16.5 ±0.2 25 33.8 33.8 Output voltage 95% of nominal Output voltage <250 mV 12 Vout, 200 W (e.g. V28A12C200BL) Parameter Efficiency Ripple and noise Output OVP set point Dissipation, stand-by Load regulation Load Current Current limit Short circuit current Min 81.0 13.7 0 17.0 11.6 Typ 83.0 280 14.3 11.0 ±0.02 19.2 19.2 Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 Max 350 14.9 12.2 ±0.2 16.67 22.6 22.6 Output voltage 95% of nominal Output voltage < 250mV 28 V Maxi Family Set your site on VICOR at vicorpower.com Rev. 1.7 Page 4 of 10 MODULE SPECIFIC OPERATING SPECIFICATIONS 15 Vout, 200 W (e.g. V28A15C200BL) Parameter Efficiency Ripple and noise Output OVP set point Dissipation, stand-by Load regulation Load Current Current limit Short circuit current Min 82.2 17.1 0 13.5 9.31 Typ 83.5 220 17.8 12.7 ±0.02 15.3 15.3 Max 275 18.5 13.7 ±0.2 13.33 20.6 20.6 Unit % mV Volts Watts % Amps Amps Amps Notes Nominal input; full load; 25°C p-p; Nominal input; full load; 20 MHz bandwith 25°C; recycle input voltage to restart (>100 ms off) No load No load to full load; nominal input Unit % mV Volts Watts % Amps Amps Amps Notes Nominal input; full load; 25°C p-p; Nominal input; full load; 20 MHz bandwith 25°C; recycle input voltage to restart (>100 ms off) No load No load to full load; nominal input Unit % mV Volts Watts % Amps Amps Amps Notes Nominal input; full load; 25°C p-p; Nominal input; full load; 20 MHz bandwith 25°C; recycle input voltage to restart (>100 ms off) No load No load to full load; nominal input Unit % mV Volts Watts % Amps Amps Amps Notes Nominal input; full load; 25°C p-p; Nominal input; full load; 20 MHz bandwith 25°C; recycle input voltage to restart (>100 ms off) No load No load to full load; nominal input Unit % mV Volts Watts % Amps Amps Amps Notes Nominal input; full load; 25°C p-p; Nominal input; full load; 20 MHz bandwith 25°C; recycle input voltage to restart (>100 ms off) No load No load to full load; nominal input Output voltage 95% of nominal Output voltage <250 mV 24 Vout, 200 W (e.g. V28A24C200BL) Parameter Efficiency Ripple and noise Output OVP set point Dissipation, stand-by Load regulation Load Current Current limit Short circuit current Min 82.8 27.1 0 8.49 5.83 Typ 84.8 315 28.1 12.3 ±0.02 9.6 9.6 Max 394 29.1 13.5 ±0.2 8.33 11.3 11.3 Output voltage 95% of nominal Output voltage <250 mV 28 Vout, 200 W (e.g. V28A28C200BL) Parameter Efficiency Ripple and noise Output OVP set point Dissipation, stand-by Load regulation Load Current Current limit Short circuit current Min 84.0 31.5 0 7.28 4.99 Typ 85.0 200 32.7 15.5 ±0.02 8.2 8.2 Max 250 33.9 18.0 ±0.2 7.14 10.0 10.0 Output voltage 95% of nominal Output voltage <250 mV 36 Vout, 200 W (e.g. V28A36C200BL) Parameter Efficiency Ripple and noise Output OVP set point Dissipation, stand-by Load regulation Load Current Current limit Short circuit current Min 80.9 40.4 0 5.67 3.89 Typ 82.6 225 41.9 14.4 ±0.02 7.7 6.9 Max 282 43.4 16.8 ±0.2 5.56 8.06 7.5 Output voltage 95% of nominal Output voltage <250 mV 48 Vout, 200 W (e.g. V28A48C200BL) Parameter Efficiency Ripple and noise Output OVP set point Dissipation, stand-by Load regulation Load Current Current limit Short circuit current Min 81.0 53.7 0 4.25 2.92 Typ 82.5 360 55.7 15.6 ±0.02 4.4 4.8 Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 Max 450 57.7 18.3 ±0.2 4.17 5.84 5.43 Output voltage 95% of nominal Output voltage <250 mV 28 V Maxi Family Set your site on VICOR at vicorpower.com Rev. 1.7 Page 5 of 10 CONTROL FUNCTIONS - PC PIN Module Enable / Disable Module Alarm The module may be disabled by pulling PC below 2.3 V with respect to the –Input. This may be done with an open collector transistor, relay, or optocoupler. Multiple converters may be disabled with a single transistor or relay either directly or via “OR’ing” diodes. See Figure 1. The module contains “watchdog” circuitry which monitors input voltage, operating temperature and internal operating parameters. In the event that any of these parameters are outside of their allowable operating range, the module will shut down and PC will go low. PC will periodically go high and the module will check to see if the fault (as an example, overtemperature) has cleared. If the fault has not been cleared, PC will go low again and the cycle will restart. The SC pin will go low in the event of a fault and return to its normal state after the fault has been cleared. See Figures 2 and 4. Primary Auxiliary Supply At 5.7 V, PC can source up to 1.5 mA. In the example shown in Figure 3, PC powers a module enabled LED. +IN +IN SW1 PC Auto Restart Input Undervoltage Input Overvoltage (See Note 1) Overtemperature Module Faults PC Disable PR SW1, 2, & 3 shown in "Fault" position SW2 SW3 SC 1K –S 5.7 Vdc (0-3 mA) –IN –IN 1.23 Vdc 6K – OUT 1 Not applicable for 300 Vdc input family Disable = PC <2.3 V Figure 1 — Module enable / disable. Figure 2 — PC/SC module alarm logic. +IN 40 μs typ. Fault PC "Module Enabled" 1M +S 50 Ω 2-20 ms typ. f (VIN) PR +OUT 5.7 V PC 4 kΩ PR SC –IN Figure 3 — LED on-state indicator. Optocoupler 1.23 V 2–20 ms typical Figure 4 — PC/SC module alarm timing. +IN +OUT PC +S Comparator SC 4 kΩ PR –S –IN –OUT Figure 5 — Isolated on-state indicator. Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 Alarm 1.00V Figure 6 — Secondary side on-state indicator. 28 V Maxi Family Set your site on VICOR at vicorpower.com Rev. 1.7 Page 6 of 10 CONTROL FUNCTIONS - SC PIN Output Voltage Programming The output voltage of the converter can be adjusted or programmed via fixed resistors, potentiometers or voltage DACs. See Figures 7 and 8. +OUT +OUT +S Error Amp 1 kΩ SC 0.033 μF –S +S RD Trim Down Load Error Amp 1 kΩ SC Load –S 0.033 μF –OUT RU Trim Up –OUT 1.23 V 1.23 V RD (ohms) = 1,000 Vout Vnom – Vout RU (ohms) = 1,000 (Vout –1.23) Vnom – 1,000 1.23 (Vout – Vnom) Figure 7 — Output voltage trim down circuit. Figure 8 — Output voltage trim up circuit. Trim Down Trim Up 1. This converter is not a constant power device – it has a constant current limit. Hence, available output power is reduced by the same percentage that output voltage is trimmed down. Do not exceed maximum rated output current. 1. The converter is rated for a maximum delivered power. To ensure that maximum rated power is not exceeded, reduce maximum output current by the same percentage increase in output voltage. 2. The trim down resistor must be connected to the –Sense pin. 2. The trim up resistor must be connected to the +Sense pin. 3. Do not trim the converter above maximum trim range (typically +10%) or the output over voltage protection circuitry may be activated. Trim resistor values calculated automatically: On-line calculators for trim resistor values are available on the vicor website at: vicorpower.com/tools. Resistor values can be calculated for fixed trim up, fixed trim down and for variable trim up or down. In addition to trimming information, the web site and the Applications Manual also include design tips, applications circuits, EMC suggestions, thermal design guidelines and PDF data sheets for all available Vicor products. Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 28 V Maxi Family Set your site on VICOR at vicorpower.com Rev. 1.7 Page 7 of 10 CONTROL FUNCTIONS - PR PIN Parallel Operation The PR pin supports paralleling for increased power with N+1 (N+M) redundancy and phased array capability. Modules of the same input voltage, output voltage, and power level will current share if all PR pins are suitably interfaced. Compatible interface architectures include the following: DC coupled single-wire interface. All PR pins are directly connected to one another. This interface supports current sharing but is not fault tolerant. Minus In pins must be tied to the same electric potential. See Figure 9. AC coupled single-wire interface. All PR pins are connected to a single communication bus through 0.001 µF (500 V) capacitors. This interface supports current sharing and is fault tolerant except for the communication bus. See Figure 10. Technical Information For additional technical information contained in the Design Guide and Applications Manual for Maxi, Mini, Micro Family DC-DC Converters and Accessory Modules, click on the link below: http://www.vicorpower.com/mmmguide +IN +IN 0.001µF PC PC Module 1 Module 1 PR PR –IN –IN +IN +IN 0.001µF PC PC Module 2 (up to 12) PR –IN –IN Ground plane Ground plane Figure 10 — AC coupled single-wire interface. Figure 9 — DC coupled single-wire interface. +OUT +S SC –S Module 1 • The +Out and –Out power buses should be designed to minimize and balance parasitic impedance from each module output to the load. +S –S –OUT • The +Sense pins should be tied to the same point on the +Out power bus; the –Sense pins should be tied to the same point on the –Out power bus. +S +OUT +S SC –S Module 2 Module 2 (up to 12) PR +S Load –S • At the discretion of the power system designer, a subset of all modules within an array may be configured as slaves by shorting SC to –S. –OUT –S +OUT +OUT +S SC –S –OUT +Sense from other modules in the array • OR’ing diodes may be inserted in series with the +Out pins of each module to provide module output fault tolerance. +S Module N+1 SC –S –OUT Figure 11 — N+1 module array output connections. Figure 12 — OR’ing diodes connections. PIN STYLES* Designator Description Notes (None) Short Tin/Lead Requires inboard, mounting L Long Tin/Lead Onboard mounting for 0.065" boards S Short ModuMate SurfMate or inboard socket mounting N Long ModuMate Onboard socket mounting F Short RoHS Select for RoHS compliant inboard solder, socket, or SurfMate mounting G Long RoHS Select for RoHS compliant onboard solder or socket mounting * Pin style designator follows the “B” after the output power and precedes the baseplate designator. Ex. V28A12T200BN2 — Long ModuMate Pins Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 28 V Maxi Family Set your site on VICOR at vicorpower.com Rev. 1.7 Page 8 of 10 MECHANICAL DRAWINGS Converter Pins No. Function Label 1 +In + 2 Primary Control PC 3 Parallel PR 4 –In – 5 –Out – 6 –Sense –S 7 Secondary Control SC 8 +Sense +S 9 +Out + Figure 13 — Module outline PCB THICKNESS 0.062 ±0.010 1,57 ±0,25 PLATED THRU HOLE DIA 1.790** 45,47 0.06 R (4X) 1,5 INBOARD SOLDER MOUNT ONBOARD SOLDER MOUNT SHORT PIN STYLE LONG PIN STYLE (7X) 0.094 ±0.003 2,39 ±0,08 0.094 ±0.003 2,39 ±0,08 (2X) 0.194 ±0.003 4,93 ±0,08 0.194 ±0.003 4,93 ±0,08 ALL MARKINGS THIS SURFACE 0.178 4,52 1 2 3 4 ALUMINUM BASEPLATE 4.200* 106,68 PINS STYLES SOLDER:TIN/LEAD HOT SOLDER DIPPED MODUMATE: GOLD PLATED COPPER RoHS: GOLD PLATED COPPER 3.844** 97,64 9 8 7 6 FOR SOLDERING METHODS AND PROCEDURES PLEASE REFER TO THE MAXI, MINI, MICRO DESIGN GUIDE. 5 0.400* 10,16 0.195 4,95 0.700* 17,78 1.000* 25,40 1.400* 35,56 * DENOTES TOL = ±0.003 ±0,08 0.43 10,9 0.53 13,5 Unless otherwise specified, dimensions are in inches mm Decimals Tol. 0.XX ±0.01 0.XXX ±0.005 **PCB WINDOW ±0,25 Angles ±1° ±0,127 Figure 14 — PCB mounting specifications Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 28 V Maxi Family Set your site on VICOR at vicorpower.com Rev. 1.7 Page 9 of 10 Warranty Vicor products are guaranteed for two years from date of shipment against defects in material or workmanship when in normal use and service. This warranty does not extend to products subjected to misuse, accident, or improper application or maintenance. Vicor shall not be liable for collateral or consequential damage. This warranty is extended to the original purchaser only. EXCEPT FOR THE FOREGOING EXPRESS WARRANTY, VICOR MAKES NO WARRANTY, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Vicor will repair or replace defective products in accordance with its own best judgement. For service under this warranty, the buyer must contact Vicor to obtain a Return Material Authorization (RMA) number and shipping instructions. Products returned without prior authorization will be returned to the buyer. The buyer will pay all charges incurred in returning the product to the factory. Vicor will pay all reshipment charges if the product was defective within the terms of this warranty. Information published by Vicor has been carefully checked and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Vicor reserves the right to make changes to any products without further notice to improve reliability, function, or design. Vicor does not assume any liability arising out of the application or use of any product or circuit; neither does it convey any license under its patent rights nor the rights of others. Vicor general policy does not recommend the use of its components in life support applications wherein a failure or malfunction may directly threaten life or injury. Per Vicor Terms and Conditions of Sale, the user of Vicor components in life support applications assumes all risks of such use and indemnifies Vicor against all damages. Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom power systems. Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor components are not designed to be used in applications, such as life support systems, wherein a failure or malfunction could result in injury or death. All sales are subject to Vicor’s Terms and Conditions of Sale, which are available upon request. Specifications are subject to change without notice. Intellectual Property Notice Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applications) relating to the products described in this data sheet. Interested parties should contact Vicor's Intellectual Property Department. Vicor Corporation 25 Frontage Road Andover, MA, USA 01810 Tel: 800-735-6200 Fax: 978-475-6715 email Customer Service: [email protected] Technical Support: [email protected] Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 28 V Maxi Family Set your site on VICOR at vicorpower.com Rev. 1.7 8/09