EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL Pre-Regulator Module MR028B036M012FPT MIL-COTS PRM® Regulator with Integrated Filter Features • -55°C to 100°C baseplate operation • Height above board: 0.37 in (9.5 mm) • Vin range: 16.5 – 50 Vdc • Low weight: 2.19 oz (62.1g) (13.9 – 50 Vdc after startup) • Typical efficiency: 95% • Transient protection MIL-STD-704A/E/F • 1.3 MHz switching frequency and MIL-STD-1275A/B/D Size: 2.19 x 1.91 x 0.37 in 53,7 x 48,6 x 9,5 mm • ZVS buck-boost regulator • EMI filtering: MIL-STD-461E/F • High density: up to 78 W/in3 • Low noise operation • Architectural flexibility Product Overview The VI BRICK® Pre-Regulator Module with integrated filter is a very efficient non-isolated regulator capable of both boosting and bucking a wide range input voltage. It is specifically designed to provide a controlled Factorized Bus distribution voltage for powering downstream VI BRICK Current Multiplier Modules — fast, efficient, isolated, low noise Point-of-Load (POL) converters. In combination, VI BRICK PRMs and VTM®s form a complete DC-DC converter subsystem offering all of the unique benefits of Vicor’s Factorized Power Architecture (FPA): high density and efficiency; low noise operation; architectural flexibility; extremely fast transient response; and elimination of bulk capacitance at the Point-of-Load (POL). In addition, the integrated filter provides compliance to MIL-STD-1275 and MIL-STD-704 for (transients) and MIL-STD-461 (EMI). distribution losses and enabling use of narrower distribution bus traces. A Military COTS VI BRICK PRM-VTM chip set can provide up to 100 A or 120 W. In FPA systems, the POL voltage is the product of the Factorized Bus voltage delivered by the VI BRICK PRM and the "K-factor" (the fixed voltage transformation ratio) of a downstream VTM. The PRM controls the Factorized Bus voltage to provide regulation at the POL. Because VTMs perform true voltage division and current multiplication, the Factorized Bus voltage may be set to a value that is substantially higher than the bus voltages typically found in "intermediate bus" systems, reducing The Military COTS VI BRICK PRM with integrated filter described in this data sheet features a unique "Adaptive Loop" compensation feedback: a single wire alternative to traditional remote sensing and feedback loops that enables precise control of an isolated POL voltage without the need for either a direct connection to the load or for noise sensitive, bandwidth limiting, isolation devices in the feedback path. Absolute Maximum Ratings Parameter Values Unit Notes Parameter Values Unit +In to -In -1.0 to 60.0 Vdc Continuous OS to -Out -0.3 to 9.0 Vdc PC to -In PR to -In IL to -In VC to -In +Out to -Out SC to -Out VH to -Out -0.3 to 6.0 -0.3 to 9.0 -0.3 to 6.0 -0.3 to 18.0 -0.3 to 59 -0.3 to 3.0 -0.3 to 9.5 Vdc Vdc Vdc Vdc Vdc Vdc Vdc -0.3 to 9.0 100 3.3 120 -55 to +100 -65 to +125 Vdc mA Adc W °C °C CD to -Out SG to -Out Continuous output current Continuous output power Operating temperature Storage temperature Notes M-Grade; baseplate M-Grade Note: Stresses in excess of the maximum ratings can cause permanent damage to the device. Operation of the device is not implied at these or any other conditions in excess of those given in the specification. Exposure to absolute maximum ratings can adversely affect device reliability. Pre-Regulator Module Rev 1.7 vicorpower.com Page 1 of 13 01/2014 800 927.9474 EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT SPECIFICATIONS PART NUMBERING MR 028 B 036 M Pre-Regulator Module Input Voltage Designator Package Size Nominal Factorized Bus Voltage 012 F Output Power Designator (=POUT /10) Product Grade Temperatures (°C) Grade M= Input Specifications Input voltage range Input dV/dt Input undervoltage turn-on Input undervoltage turn-off Input overvoltage turn-on Input overvoltage turn-off Input quiescent current Input current Inrush limiting Input reflected ripple current No load power dissipation Internal input capacitance Storage -65 to +125 Min Typ Max Unit 16.5[b] 28 50 1 16.1 Vdc V/µs Vdc Vdc Vdc Vdc mA Adc A/μF mA p-p W µF 50.5 15.9 13.9 52.9 53.9 0.5 4.5 55.4 1 0.01 240 2.75 5 Recommended external capacitance (CIN) 5.8 1,000 Transient Immunity [b] Operating -55 to +100 Baseplate F = Slotted flange Pin Style P = Through hole (Conditions are at 28 Vin, 36 Vf [a], full load, and 25°C baseplate unless otherwise specified) Parameter [a] P Notes Increases linearly to 17 V max at 100°C PC low See Figures 3 Ceramic Input filter circuit Figure 12 CIN 50 ms per MIL-STD-1275A/B/D 70 µs per MIL-STD-1275A/B/D 20 ms per MIL-STD-704A 100 ms per D0-160 E, sec.16, Cat. z 12.5 ms per Mil-STD-704 E/F µF 100 250 70 80 50 Vdc Vdc Vdc Vdc Vdc Vf is factorized bus voltage (see Figure 16). Will operate down to 13.9 V after start up ≥ 16 V. Output Specifications Parameter Output voltage range Output power Internal voltage drop Output current DC current limit Average short circuit current Set point accuracy Line regulation Load regulation Load regulation (at VTM output) Efficiency Full load Output overvoltage set point Output ripple voltage No external bypass With 10 µF capacitor Switching frequency Output turn-on delay From application of power From PC pin high Internal output capacitance Factorized Bus capacitance (Conditions are at 28 Vin, 36 Vf [a], full load, and 25°C baseplate unless otherwise specified) Min Typ Max Unit Note 26 0 36 50 120 Factorized Bus voltage (Vf) set by ROS 0.2 0.2 2.0 Vdc W Vdc Adc Adc A % % % % % Vdc See Figure 4,5 & 6 59.4 1.8 0.6 1.3 2.7 0.9 1.45 % % MHz Factorized Bus, see Figure 16 Factorized Bus, See Figure 17 94 100 5 144 ms µs µF µF 0.4 0 3.5 93 56 1.2 3.9 0.125 1.5 0.1 0.1 1.0 3.33 4.4 1.25 95.6 47 IL pin floating Auto recovery Low line to high line No CD resistor Adaptive Loop See Figure 1 See Figure 2 Ceramic Pre-Regulator Module Rev 1.7 vicorpower.com Page 2 of 13 01/2014 800 927.9474 T EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT SPECIFICATIONS (CONT.) EMI Standard Test Procedure Notes MIL-STD-461E/F Conducted Emissions Conducted Susceptability CE101-4 Navy ASW & Army Aircraft, Curve #2 (28 Vdc) CE102-1 Basic curve, for all applications CS101-1 Curve #2, for all applications (28 Vdc) CS114-1 Conducted suceptibility, bulk cable injection, 10 KHz - 200 MHz, Curve #4 CS115-1 Conducted suceptibility, bulk cable injection, impulse excition, all applications INPUT WAVEFORMS & TEST CIRCUIT Figure 2 — Vf turn-on waveform with inrush current – PC enabled at full load, Figure 1 — Vf and PC response from power up 8 Vin, electronic load set @constant R. Figure 3 — Input reflected ripple current at full load and 28 Vin Pre-Regulator Module Rev 1.7 vicorpower.com Page 3 of 13 01/2014 800 927.9474 EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT SPECIFICATIONS (CONT.) EFFICIENCY GRAPHS 94 15.0 90 12.5 86 10.0 PD 82 7.5 78 5.0 74 2.5 70 0.0 3.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Load Current (A) Efficiency & Power Dissipation 100° Case 15.0 90 12.5 86 82 7.5 78 5.0 74 2.5 0.5 1.0 1.5 2.0 12.5 86 2.5 10.0 PD 82 7.5 78 5.0 74 2.5 70 0.5 0.0 1.0 1.5 2.0 2.5 3.0 0.0 3.5 Load Current (A) 17 V 28 V 50 V 17 V 28 V 50 V Figure 5 — Efficiency and power dissipation vs. output current, 25°C Tcase 10.0 PD 0.0 90 17.5 94 70 15.0 Power Dissipation (W) Efficiency (%) 98 94 VIN: Figure 4 — Efficiency and power dissipation vs. output current, -55°C Tcase 17.5 Power Dissipation (W) 17.5 Power Dissipation (W) Efficiency (%) 98 Efficiency & Power Dissipation 25° Case 98 Efficiency (%) Efficiency & Power Dissipation -55° Case 3.0 3.5 0.0 Load Current (A) VIN: 17 V 28 V 50 V 17 V 28 V 50 V Figure 6 — Efficiency and power dissipation vs. output current, 100°C Tcase Figure 7 — Conducted Noise (CE 102); MR028B036M012FPT with VTM®, 28 Vdc input, 12 Vdc output, 90% load. Pre-Regulator Module Rev 1.7 vicorpower.com Page 4 of 13 01/2014 800 927.9474 EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT SPECIFICATIONS (CONT.) Shut Down Time vs. Overvoltage 400 350 T (ms) 300 250 200 150 100 50 0 Figure 8 — Transient immunity; MR028B036M012FPT output response 107 100 90 Vin 80 (V) 70 60 Figure 9 — Shutdown Time vs. Overvoltage to an input transient. Figure 10 — Inrush Limiting CY1 ON/OFF -OUT EMI GND +IN -OUT CINCIN+ + CIN 0.4 µH +OUT -IN Vin – + +OUT C1 PR NC IL TM PC VC +IN CD NC OS SG SC VH +OUT 10 K CIL 10 Ω TM VC PC L O A D -OUT VTM +OUT RCD -IN R OS -OUT CY2 Figure 11 — Recommended Circuit for EMI Pre-Regulator Module Rev 1.7 vicorpower.com Page 5 of 13 01/2014 800 927.9474 EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT SPECIFICATIONS (CONT.) OUTPUT WAVEFORMS Figure 12 — Transient response; PRM® alone 28 Vin, 0-3.3-0A, no load capacitance, local loop Figure 13 — Transient response; PRM alone 16 Vin, 0-3.3-0A no load capacitance, local loop Figure 14 — Transient response; PRM alone 50 Vin, 0-3.3-0A no load Figure 15 — PC during fault – frequency will vary as a function of line voltage capacitance, local loop. Figure 16 — Output ripple 36 Vf, full load no bypass capacitance Figure 17 — Output ripple 36 Vf, full load 10 µF bypass capacitance Pre-Regulator Module Rev 1.7 vicorpower.com Page 6 of 13 01/2014 800 927.9474 EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT SPECIFICATIONS (CONT.) General Specifications Parameter Min MTBF MIL-HDBK-217F Max 2,731,720 491,573 385,172 Agency approvals Mechanical parameters Weight Dimensions Length Width Height Thermal Over temperature shut down Thermal capacity Baseplate to ambient Baseplate to ambient; 1000 LFM Baseplate to sink; flat, greased surface Baseplate to sink; thermal pad Typ Unit hrs hrs hrs CE Mark 130 2.19 / 62,1 oz/g 2.19 / 55,7 1.91 / 48,6 0.37 / 9,5 in / mm in / mm in / mm 135 23.8 Notes 25°C, GB 50°C, NS 65°C, AIC Low voltage directive (10 A external fuse required), EN60950-1 See Mechanical Drawings, Figures 20 & 21 140 °C Ws/°C °C/W °C/W °C/W °C/W junction temperature Notes 8.8 3.0 0.40 0.36 Auxiliary Pins Parameter CIN+ CIN– EMI GND ON / OFF VC (VTM Control) Pulse width Peak voltage PC (Primary Control) DC voltage Module disable voltage Module enable voltage Disable hysteresis Min Typ Max Unit 8 12 18 14 18 ms V 5.0 2.4 2.5 5.2 4.8 2.3 Current limit Enable delay time Disable delay time IL (Current Limit Adjust) Voltage Accuracy PR VH (Auxiliary Voltage) Range Regulation Current SC (Secondary Control) Voltage Internal capacitance External capacitance OS (Output Set) Set point accuracy Reference offset CD (Compensation Device) External resistance 2.6 100 1.75 1.90 mA µs µs 1.05 V % 100 1 0.95 1 ± 15 8.7 9.0 9.3 0.04 5 1.23 1.24 1.25 0.22 0.7 ± 1.5 ±4 20 Vdc Vdc Vdc mV Vdc %/mA mA p Referenced to –Out Referenced to CINReferenced to CIN- Source only after start up; not to be used for aux. supply; 100 kΩ min. load impedance to assure start up. Based on DC current limit set point Terminate with 10 kΩ to SG Typical internal bypass C= 0.1 µF Maximum external C=0.1 µF, referenced to SG Vdc µF µF Referenced to SG % mV Includes 1% external resistor Ω Pre-Regulator Module Rev 1.7 vicorpower.com Page 7 of 13 01/2014 800 927.9474 Omit resistor for regulation at output of PRM® EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT PIN / CONTROL FUNCTIONS VH – Auxiliary Voltage +In / -In DC Voltage Ports The VI BRICK maximum input voltage should not be exceeded. PRM s will turn on when the input voltage rises above its undervoltage lockout. PC will toggle indicating an out of bounds condition. ® ® ON / OFF Pin The module is enabled when the ON / OFF pin is connected to CIN- or, as an alternative, it is enabled by connecting the ON/OFF pin via a 4.7 k resistor to -OUT pin. The module is disabled when the ON/OFF pin is left floating. +Out / -Out Factorized Voltage Output Ports VH is a gated (e.g. mirrors PC), non-isolated, nominally 9 Volt, regulated DC voltage (see “Auxiliary Pins” specifications, on Page 7) that is referenced to SG. VH may be used to power external circuitry having a total current consumption of no more than 5 mA under either transient or steady state conditons including turn-on. SC – Secondary Control The load voltage may be controlled by connecting a resistor or voltage source to the SC port referenced to SG. The slew rate of the output voltage may be controlled by controlling the rate-of-rise of the voltage at the SC port (e.g., to limit inrush current into a capacitive load). These ports provide the Factorized Bus voltage output. The –Out port is connected internally to the –In port through a current sense resistor. The PRM has a maximum power and a maximum current rating and is protected if either rating is exceeded. Do not short –Out to –In. This port provides a low inductance Kelvin connection to –In and should be used as reference for the OS, CD, SC,VH and IL ports. VC – VTM Control OS – Output Set The VTM Control (VC) port supplies an initial VCC voltage to downstream VTMs, enabling the VTMs and synchronizing the rise of the VTM output voltage to that of the PRM. The VC port also provides feedback to the PRM to compensate for voltage drop due to the VTM output resistance. The PRM’s VC port should be connected to the VTM VC port. A PRM VC port can drive a maximum of two (2) VTM VC ports. The application-specific value of the Factorized Bus voltage (Vf) is set by connecting a resistor between OS and SG. Resistor value selection is shown in Table 1 on Page 9, and described on Page 10. If no resistor is connected, the PRM output will be approximately one volt. ® PC – Primary Control The PRM voltage output is enabled when the PC pin is open circuit (floating). To disable the PRM output voltage, the PC pin is pulled low. Open collector optocouplers, transistors, or relays can be used to control the PC pin. When using multiple PRMs in a high power array, the PC ports must be tied together to synchronize their turn on. During an abnormal condition the PC pin will pulse (Fig.15) as the PRM initiates a restart cycle. This will continue until the abnormal condition is rectified. The PC should not be used as an auxiliary voltage supply, nor should it be switched at a rate greater than 1 Hz. SG – Signal Ground CD – Compensation Device Adaptive Loop control is configured by connecting an external resistor between the CD port and SG. Selection of an appropriate resistor value (see Equation 2 on Page 9 and Table 1 on Page 8) configures the PRM to compensate for voltage drops in the equivalent output resistance of the VTM and the PRM-VTM distribution bus. If no resistor is connected to CD, the PRM will be in Local Loop mode and will regulate the +Out / –Out voltage to a fixed value. TM – Factory Use Only ON/OFF -OUT EMI GND IL – Current Limit Adjust The PRM has a preset, maximum, current limit set point. The IL port may be used to reduce the current limit set point to a lower value. The IL port must be connected to a 0.01 µF capacitor to set pin in order to prevent the noise from interfering PRM during the transient surge. See “adjusting current limits” on page 11. CINCIN+ +OUT -IN +IN PR – Factory use only -OUT +OUT PR NC IL TM PC VC CD NC OS SG SC VH Figure 18— MR028B036M012FPT pin configuration (viewed from pin side) Pre-Regulator Module Rev 1.7 vicorpower.com Page 8 of 13 01/2014 800 927.9474 EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT APPLICATION INFORMATION Overview of Adaptive Loop Compensation The VI BRICK’s bi-directional VC port : Adaptive Loop compensation, illustrated in Figure 11, contributes to the bandwidth and speed advantage of Factorized Power. The PRM® monitors its output current and automatically adjusts its output voltage to compensate for the voltage drop in the output resistance of the VTM®. ROS sets the desired value of the VTM output voltage, Vout; RCD is set to a value that compensates for the output resistance of the VTM (which, ideally, is located at the point of load). For selection of ROS and RCD, refer to Table 1 below or Page 10. 1. Provides a wake up signal from the PRM to the VTM that synchronizes the rise of the VTM output voltage to that of the PRM. 2. Provides feedback from the VTM to the PRM to enable the PRM to compensate for the voltage drop in VTM output resistance, RO. CY1 ON/OFF -OUT EMI GND +IN -OUT CINCIN+ + CIN 0.4 µH +OUT -IN Vin – + +OUT C1 PR NC IL TM PC VC +IN CD NC OS SG SC VH +OUT 10 K CIL 10 Ω TM VC PC L O A D -OUT VTM +OUT RCD -IN R OS -OUT CY2 Part C1 CIN CIL CY1, CY2 Description Value Recommended input capacitor Recommended external capacitor Filtering capacitor Y-type capacitor 10 µF / 250 V 1000 µF / 63 V 0.01 µF 4700 pF Figure 19 — With Adaptive Loop control, the output of the VTM is regulated over the load current range with only a single interconnect between the PRM and VTM and without the need for isolation in the feedback path. Desired Load Voltage (Vdc) 1.0 1.2 1.5 1.8 2.0 3.3 5.0 10 12 15 24 28 36 48 VI BRICK VTM P/N(1) MT036A011M100FP MT036A011M100FP MT036A015M080FP MT036A015M080FP MT036A022M055FP MT036A030M040FP MT036A045M027FP MT036A090M013FP MT036A120M010FP MT036A180M007FP MT036A240M005FP MT036A240M005FP MT036A360M003FP MT036A360M003FP Max VTM Output Current (A)(2) 100 100 80 80 55 40 27 13.3 10 6.7 5.0 5.0 3.3 3.3 Note: (1) See Table 2 on Page 10 for nominal Vout range and K factors. (2) See “PRM output power vs. VTM output power” on Page 11 (3) 1% precision resistors recommended Table 1 — Configure your Chip Set using the VI BRICK® PRM. Pre-Regulator Module Rev 1.7 vicorpower.com Page 9 of 13 01/2014 800 927.9474 ROS (kΩ)(3) 2.70 2.24 2.39 1.98 2.70 2.16 2.14 2.14 2.39 2.87 2.39 2.04 2.39 1.78 RCD (Ω)(3) 34.8 41.2 32.4 38.3 23.2 37.4 39.2 41.2 21.5 34.8 38.3 41.2 34.8 45.3 EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT APPLICATION INFORMATION Output Voltage Setting with Adaptive Loop Output Voltage Trimming (optional) The equations for calculating ROS and RCD to set a VTM output voltage are: After setting the output voltage from the procedure above the output may be margined down (26 Vf min) by a resistor from SC-SG using this formula: ® 69800 ROS = (1) ( VL • 0.8395 ) – 1 K RdΩ = 10000 Vfd Vfs - Vfd Where Vfd is the desired factorized bus and Vfs is the set factorized bus. RCD = 68404 (2) +1 ROS A low voltage source can be applied to the SC port to margin the load voltage in proportion to the SC reference voltage. An external capacitor can be added to the SC port as shown in Figure 19 to control the output voltage slew rate for soft start. VL = Desired load voltage VOUT = VTM output voltage K = VTM transformation ratio (available from appropriate VTM data sheet) Vf = PRM® output voltage, the Factorized Bus (see Figure 19) RO = VTM output resistance (available from appropriate VTM data sheet) IL = Load Current (actual current delivered to the load) Nominal Vout Range (Vdc) VTM K Factor 0.8 ↔ 1.1 ↔ 1.6 1/32 2.0 1/24 1.7 ↔ 2.2 ↔ 3.1 1/16 4.1 1/12 3.3 ↔ 4.3 ↔ 6.2 1/8 8.3 1/6 5.2 ↔ 6.5 ↔ 10.0 1/5 12.5 1/4 8.7 ↔ 13.0 ↔ 16.6 1/3 25.0 1/2 17.4 ↔ 26.0 ↔ 33.3 2/3 50.0 1 Table 2 — 036 input series VTM K factor selection guide Pre-Regulator Module Rev 1.7 vicorpower.com Page 10 of 13 01/2014 800 927.9474 EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT APPLICATION NOTES OVP – Overvoltage Protection Adjusting Current Limit The output Overvoltage Protection set point of the MR028B036M012FPT is factory preset for 56 V. If this threshold is exceeded the output shuts down and a restart sequence is initiated, also indicated by PC pulsing. If the condition that causes OVP is still present, the unit will again shut down. This cycle will be repeated until the fault condition is removed. The OVP set point may be set at the factory to meet unique high voltage requirements. The current limit can be lowered by placing an external resistor between the IL and SG ports (see Figure 21 for resistor values). With the IL port open-circuit, the current limit is preset to be within the range specified in the output specifications table on Page 2. 100 10 Outside of Viable Trim Range As shown in Figure 20, the MR028B036M012FPT is rated to deliver 3.3 A maximum, when it is delivering an output voltage in the range from 26 V to 36 V, and 120 W, maximum, when delivering an output voltage in the range from 36 V to 50 V. When configuring a PRM for use with a specific VTM®, refer to the appropriate VTM data sheet. The VTM input power can be calculated by dividing the VTM output power by the VTM efficiency (available from the VTM data sheet). The input power required by the VTM should not exceed the output power rating of the PRM. RIL Resistance (KΩ) PRM Output Power Versus VTM Output Power 22uF (ESR >= 1.7Ω) & 33uf (ESR>= 1.35Ω) & 47uF (ESR >= 1.1Ω) - NO IL TRIM 1000 10uF (ESR >= 2.40Ω) 0uF 1 4.00 75% 80% 85% 90% 95% 100% % Percentage of Current Limit Setpoint 3.80 3.60 3.40 Figure 21 — Calculated external resistor value for adjusting current limit, actual value may vary. 3.20 Current (A) 3.00 - 0.066 A / V 2.80 Input Fuse Recommendations Safe Operating Area 2.60 2.40 2.20 2.00 1.80 0 ~ ~ 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 A fuse should be incorporated at the input to the PRM®, in series with the +In port. A fast acting fuse, NANO2 FUSE 451/453 Series 10 A 125 V, or equivalent, may be required to meet certain safety agency Conditions of Acceptability. Always ascertain and observe the safety, regulatory, or other agency specifications that apply to your specific application. For agency approvals and fusing conditions, please see the corresponding page on our website at www.vicorpower.com. Factorized Bus Voltage (VF) Figure 20 — MR028B036M012FPT rating based on Factorized Bus voltage The Factorized Bus voltage should not exceed an absolute limit of 50 V, including steady state, ripple and transient conditions. Exceeding this limit may cause the internal OVP set point to be exceeded. Application Notes For PRM and VI BRICK application notes on soldering, board layout, and system design, please see the corresponding page on our website at www.vicorpower.com. Applications Assistance Please contact Vicor Applications Engineering for assistance, 1-800-927-9474, or email at [email protected]. Pre-Regulator Module Rev 1.7 vicorpower.com Page 11 of 13 01/2014 800 927.9474 EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MECHANICAL DRAWINGS Baseplate - Slotted Flange Figure 22 — Module outline Recommended PCB Pattern (Component side shown) Figure 23 — PCB mounting specifications Pre-Regulator Module Rev 1.7 vicorpower.com Page 12 of 13 01/2014 800 927.9474 MR028B036M012FPT EOL - Not Recommended for New Designs; Alternate Solution is MF028AMFPT/MP028T036M12AL MR028B036M012FPT 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 makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication. Vicor reserves the right to make changes to any products, specifications, and product descriptions at any time without notice. Information published by Vicor has been checked and is believed to be accurate at the time it was printed; however, Vicor assumes no responsibility for inaccuracies. Testing and other quality controls are used to the extent Vicor deems necessary to support Vicor’s product warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. Specifications are subject to change without notice. Vicor’s Standard Terms and Conditions All sales are subject to Vicor’s Standard Terms and Conditions of Sale, which are available on Vicor’s webpage or upon request. Product Warranty In Vicor’s standard terms and conditions of sale, Vicor warrants that its products are free from non-conformity to its Standard Specifications (the “Express Limited Warranty”). This warranty is extended only to the original Buyer for the period expiring two (2) years after the date of shipment and is not transferable. UNLESS OTHERWISE EXPRESSLY STATED IN A WRITTEN SALES AGREEMENT SIGNED BY A DULY AUTHORIZED VICOR SIGNATORY, VICOR DISCLAIMS ALL REPRESENTATIONS, LIABILITIES, AND WARRANTIES OF ANY KIND (WHETHER ARISING BY IMPLICATION OR BY OPERATION OF LAW) WITH RESPECT TO THE PRODUCTS, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR REPRESENTATIONS AS TO MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, INFRINGEMENT OF ANY PATENT, COPYRIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT, OR ANY OTHER MATTER. This warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. Vicor shall not be liable for collateral or consequential damage. Vicor disclaims any and all liability arising out of the application or use of any product or circuit and assumes no liability for applications assistance or buyer product design. Buyers are responsible for their products and applications using Vicor products and components. Prior to using or distributing any products that include Vicor components, buyers should provide adequate design, testing and operating safeguards. Vicor will repair or replace defective products in accordance with its own best judgment. 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. Life Support Policy VICOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF VICOR CORPORATION. As used herein, life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness. Per Vicor Terms and Conditions of Sale, the user of Vicor products and components in life support applications assumes all risks of such use and indemnifies Vicor against all liability and damages. 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. No license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Interested parties should contact Vicor's Intellectual Property Department. The products described on this data sheet are protected by the following U.S. Patents Numbers: 5,945,130; 6,403,009; 6,710,257; 6,788,033; 6,940,013; 6,969,909; 7,038,917; 7,154,250; 7,166,898; 7,187,263; 7,202,646; 7,361,844; 7,368,957; RE40,072; D496,906; D506,438; D509,472; and for use under U.S. Pat. Nos. 6,975,098 and 6,984,965. 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] Pre-Regulator Module Rev 1.7 vicorpower.com Page 13 of 13 01/2014 800 927.9474