VI_BRICK_MT036_VTM VICOR | Alldatasheet
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Size: 1.91 x 1.09 x 0.37 in 48,6 x 27,7 x 9,5 mm Parameter Values Unit Notes +In to -In -1.0 to 60 Vdc +In to -In 100 Vdc For 100 ms PC to -In -0.3 to 7.0 Vdc VC to -In -0.3 to 19.0 Vdc +Out to -Out Model specific Vdc Isolation voltage 2,250 Vdc Input to output Output current Model specific A Continuous Peak output current 1.5 Iout A For 1 ms Output power 120 W Continuous Peak output power 180 W For 1 ms Operating temperature -55 to +100 °C M-Grade ; baseplate Storage temperature -65 to +125 °C M-Grade Absolute Maximum Ratings 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. The VI BRICK VTM Current Multiplier provides extremely fast, efficient, and quiet fixed ratio voltage division (or current multiplication). With twelve voltage division ratios from 1:1 to 1:32, the isolated VI BRICK VTM provides the user with the flexibility to supply up to 100 A or 120 W at any output voltage from 1 to 50 Vdc in a package occupying ~ 2 square inches. The Military COTS VI BRICK VTMs are optimized for use with the Military Pre-Regulator Module to implement a Factorized Power Architecture (FPA). Together, the PRM TM + VTM set provides the full functionality of a DC-DC converter, but with breakthrough performance and flexibility in a rugged, miniature package. The companion VI BRICK PRM for the MT036 family of VI BRICK VTMs is the 28 Vdc input MR028A036M012FP , which operates from an input range of 16-50 Vdc (the data sheet is available at vicorpower.com). The VTM can also be used as a standalone POL product. By factorizing the DC-DC power conversion into its essential elements – isolation and transformation on the one hand, and the output voltage control and regulation on the other – and arranging those functions in a sequence that maximizes system performance, FPA offers a fundamentally new and significantly improved approach to power conversion. The VI BRICK VTM’s fast dynamic response and low noise eliminate the need for bulk capacitance at the load, substantially increasing the POL density while improving reliability and decreasing cost.
Voltage Transformation Module MT036 SERIES vicorpower.com Rev. 1.0 Page 2 of 11 SPECIFICATIONS Parameter Min Typ Max Unit Notes Input voltage range 26 36 50 Vdc Operable down to zero V with VC voltage applied Input dV/dt 1 V/µs Input overvoltage turn-on 50.5 54.5 Vdc Input overvoltage turn-off 55.5 57.5 Vdc Input current 3.5 Adc Continuous No load power dissipation 1.5 3.0 6.0 W Low line to high line Input Specifications (Conditions are at 36 Vin, full load, and 25°C baseplate unless otherwise specified) Parameter Min Typ Max Unit Note Output voltage See Table 1 Vdc No load KVIN –l OROUT NOM Vdc Full load Rated DC current 0 100 Adc 26 – 50 V IN See Table 1, Page 5 Peak repetitive current 150% I MAX(A) Max pulse width 1ms, max duty cycle 10%, baseline power 50% DC current limit 160% I NOM(A) Module will shut down when current limit is reached or exceeded Short circuit protection set point 47.4 Adc Module will shut down Current share accuracy 5 10 % See Parallel Operation on Page 8 Efficiency See Table 2, Page 5 Load capacitance See Table 2 when used with PRM Output overvoltage setpoint 110% 115% V OUT MAX Output ripple voltage (Typ) No external bypass 50 250 mV See Figures 2 and 5 10 µF bypass capacitor 2 20 mV See Figure 6 Effective switching frequency 2.5 3.0 3.6 MHz Model dependent Line regulation 0.99K K 101K V OUT = KVIN at no load, See Table 1 Load regulation R OUTMIN ROUTMAX mΩ See Table 1 Transient response Response time 200 ns See Figures 7 and 8 Recovery time 1 µs See Figures 7 and 8 Output Specifications (Conditions are at 36 Vin, full load, and 25°C baseplate unless otherwise specified) Product Grade Temperatures (°C) Grade Operating Storage M = -55 to +100 -65 to +125 Baseplate F = Slotted flange T = Transverse heat sink[a] [a] Contact factory MT 036 A 120 M 010 F P Output Voltage Designator (=VOUT x10) Output Current Designator (=IOUT) PART NUMBERING Voltage Transformation Module Input Voltage Designator Package Size Pin Style P = Through hole
Voltage Transformation Module MT036 SERIES vicorpower.com Rev. 1.0 Page 5 of 11 SPECIFICATIONS (CONT.) Part Number Typical Full Load Efficiency at nom Vout (%) Typical Half Load Efficiency at nom Vout (%) Maximum Load Capacitance (µF ) MT036A011M100FP 89.5 91.5 48128 MT036A015M080FP 92 94 27072 MT036A022M055FP 94 94.5 12032 MT036A030M040FP 94 95.0 6768 MT036A045M027FP 95.3 96.5 3008 MT036A060M020FP 95.3 96.8 1692 MT036A072M017FP 96.5 96.5 1175 MT036A090M013FP 96.3 95.5 752 MT036A120M010FP 95.5 95.5 423 MT036A180M007FP 96.0 95.2 188 MT036A240M005FP 95.0 94.8 106 MT036A360M003FP 96 96 47 Military Cots VTM Family Part Numbers and Ranges Control Pin Functions Table 1 — VTM part numbers Table 2 — Typical efficiency and maximum load capacitance, by part number VC – VTM Control The VC port is multiplexed. It receives the initial VCC voltage from an upstream PRM, synchronizing the output rise of the VTM with the output rise of the PRM. Additionally, the VC port provides feedback to the PRM to compensate for the VTM output resistance. In typical applications using VTMs powered from PRMs, the PRM’s VC port should be connected to the VTM VC port. In applications where a VTM is being used without a PRM, 14 V must be supplied to the VC port for as long as the input voltage is below 26 V and for 10 ms after the input voltage has reached or exceeded 26 V. The VTM is not designed for extended operation below 26 V. The VC port shouldonly be used to provide V CC voltage to the VTM during startup. PC – Primary Control The Primary Control (PC) port is a multifunction port for controlling the VTM as follows: Disable – If PC is left floating, the VTM output is enabled. To disable the output, the PC port must be pulled lower than 2.4 V, referenced to -In. Optocouplers, open collector transistors or relays can be used to control the PC port. Once disabled, 14 V must be re-applied to the VC port to restart the VTM. Primary Auxiliary Supply – The PC port can source up to 2.4 mA at 5 Vdc. [a] Low line input voltage 32 V No Load Output Voltage (Vdc) Rout (m Ω)Rated Output Part Number K-Factor Current (A) @26 Vin @ 50 Vin Min Nom Max MT036A060M020FP 1/6 20 4.3 8.3 5.0 8.0 10 MT036A072M017FP 1/5 16.6 6.4[a] 10 6.0 9.6 12 MT036A120M010FP 1/3 10.0 8.7 16.6 25 31 35 MT036A180M007FP 1/2 6.7 13 25 27.5 35.7 46.4 MT036A360M003FP 13 . 3 26 50 140 170 200
Voltage Transformation Module MT036 SERIES vicorpower.com Rev. 1.0 Page 6 of 11 SPECIFICATIONS (CONT.) Parameter Min Typ Max Unit Notes MTBF (MT036A120M010FP) MIL-HDBK-217F 5,046,701 Hours 25°C, GB 908,153 50°C NS 711,584 65°C AIC Isolation specifications Voltage 2,250 Vdc Input to output Capacitance 3,000 pF Input to output Resistance 10 M Ω Input to output Agency approvals cTÜVus UL/CSA 60950-1, EN 60950-1 CE Mark Low voltage directive Mechanical See Mechanical Drawings, Figures 15, 16 Weight 1.10/31.3 oz /g Dimensions Length 1.91/48,6 in /mm Baseplate model Width 1.09/27,7 in /mm Baseplate model Height 0.37/9,5 in /mm Baseplate model Thermal Over temperature shutdown 125 130 135 °C Junction temperature Thermal capacity 23.8 Ws /°C Baseplate-to-ambient 7.7 °C /W Baseplate-to-ambient; 1000 LFM 2.9 °C /W Baseplate-to-sink; flat, greased surface 0.40 °C /W Baseplate-to-sink; thermal pad 0.36 °C /W General Specifications Parameter Min Typ Max Unit Notes Primary Control (PC) DC voltage 4.8 5.0 5.2 Vdc Module disable voltage 2.4 2.5 Vdc Module enable voltage 2.5 2.6 Vdc VC voltage must be applied when module is enabled using PC Current limit 2.4 2.5 2.9 mA Source only Disable delay time 10 µs PC low to Vout low VTM Control (VC) External boost voltage 12 6 19 Vdc Required for VTM start up without PRM External boost duration 10 ms Vin > 26 Vdc. VC must be applied continuously if Vin < 26 Vdc. Auxiliary Pins
Voltage Transformation Module MT036 SERIES vicorpower.com Rev. 1.0 Page 7 of 11 +In / -In DC Voltage Ports The VTM input should not exceed the maximum specified. Be aware of this limit in applications where the VTM is being driven above its nominal out- put voltage. If less than 26 Vdc is present at the +In and -In ports, a contin- uous VC voltage must be applied for the VTM to process power. Otherwise VC voltage need only be applied for 10 ms after the voltage at the +In and -In ports has reached or exceeded 26 Vdc. If the input voltage exceeds the overvoltage turn-off, the VTM will shutdown. The VTM does not have internal input reverse polarity protection. Adding a properly sized diode in series with the positive input or a fused reverse-shunt diode will provide reverse polarity protection. TM – For Factory Use Only VC – VTM Control The VC port is multiplexed. It receives the initial VCC voltage from an upstream PRM, synchronizing the output rise of the VTM with the output rise of the PRM. Additionally, the VC port provides feedback to the PRM to compensate for the VTM output resistance. In typical applications using VTMs powered from PRMs, the PRM’s VC port should be connected to the VTM VC port. In applications where a VTM is being used without a PRM, 14 V must be supplied to the VC port for as long as the input voltage is below 26 V and for 10 ms after the input voltage has reached or exceeded 26 V. The VTM is not designed for extended operation below 26 V. The VC port shouldonly be used to provide V CC voltage to the VTM during startup. PC – Primary Control The Primary Control (PC) port is a multifunction port for controlling the VTM as follows: Disable – If PC is left floating, the VTM output is enabled. To disable the output, the PC port must be pulled lower than 2.4 V, referenced to -In. Optocouplers, open collector transistors or relays can be used to control the PC port. Once disabled, 14 V must be re-applied to the VC port to restart the VTM. Primary Auxiliary Supply – The PC port can source up to 2.4 mA at 5 Vdc. +Out / -Out DC Voltage Output Ports The output and output return are through two sets of contact locations. The respective +Out and –Out groups must be connected in parallel with as low an interconnect resistance as possible. To take full advantage of the VTM, the user should note the low output impedance of the device. The low output impedance provides fast tran- sient response without the need for bulk POL capacitance. Limited-life electrolytic capacitors required with conventional converters can be reduced or even eliminated, saving cost and valuable board real estate. PIN / CONTROL FUNCTIONS Figure 9 — VI BRICK VTM pin configuration (viewed from pin side)
Voltage Transformation Module MT036 SERIES vicorpower.com Rev. 1.0 Page 8 of 11 APPLICATION NOTES & TEST CIRCUIT Parallel Operation In applications requiring higher current or redundancy, VTMs can be operated in parallel without adding control circuitry or signal lines. To maximize current sharing accuracy, it is imperative that the source and load impedance on each VTM in a parallel array be equal. If VTMs are being fed by an upstream PRM, the VC nodes of all VTMs must be connected to the PRM VC. To achieve matched impedances, dedicated power planes within the PC board should be used for the output and output return paths to the array of paralleled VTMs. This technique is preferable to using traces of varying size and length. The VTM power train and control architecture allow bi-directional power transfer when the VTM is operating within its specified ranges. Bi-direc- tional power processing improves transient response in the event of an output load dump. The VTM may operate in reverse, returning output power back to the input source. It does so efficiently. Input Impedance Recommendations To take full advantage of the VTM’s capabilities, the impedance of the source (input source plus the PC board impedance) must be low over a range from DC to 5 MHz. The input of the VTM (factorized bus) should be locally bypassed with a 8 µF low Q aluminum electrolytic capacitor. Additional input capacitance may be added to improve transient performance or compensate for high source impedance. The VTM has extremely wide bandwidth so the source response to transients is usually the limiting factor in overall output response of the VTM. Anomalies in the response of the source will appear at the output of the VTM, multiplied by its K factor of 1/8 . The DC resistance of the source should be kept as low as possible to minimize voltage deviations on the input to the VTM. If the VTM is going to be operating close to the high limit of its input range, make sure input voltage deviations will not trigger the input overvoltage turn-off threshold. Input Fuse Recommendations VI BRICKs are not internally fused in order to provide flexibility in configuring power systems. However, input line fusing of VI BRICKs must always be incorporated within the power system. A fast acting fuse is required to meet safety agency Conditions of Acceptability. The input line fuse should be placed in series with the +In port. For agency approvals and fusing conditions, click on the link below: http://www.vicorpower.com/technical_library/technical_documentation/quality_ and_certification/safety_approvals/ Application Notes For VTM and VI BRICK application notes on soldering, thermal management, board layout, and system design click on the link below: http://www.vicorpower.com/technical_library/application_information/ Load Input reflected ripple measurement point 0.47 μF ceramic +–14 V VTM +IN +OUT -OUT +OUT -OUT-IN TM VC PC Figure 10 — VI BRICK VTM test circuit Notes: 1. C3 should be placed close to the load 2. R3 may be ESR of C3 or a separate damping resistor. [a] See Input Fuse Recommendations section 10 µF 10 mΩC1 47 µF Al electrolytic 7A [a] Fuse
Voltage Transformation Module MT036 SERIES vicorpower.com Rev. 1.0 Page 9 of 11 APPLICATION NOTES (CONT.) Figure 11 — The PRM controls the factorized bus voltage, V f, in proportion to output current to compensate for the output resistance, Ro, of the VTM. The VTM output voltage is typically within 1% of the desired load voltage (VL) over all line and load conditions. L O A D Factorized Bus (Vf) Vo = VL ± 1.0% (IoRo) KVf = VL +KVin ROS RCD VTM +IN +OUT -OUT +OUT -OUT-IN TM VC PC PRM-AL VH SC SG OS NC CD VC PC TM IL NC PR +IN +OUT -OUT-IN FPA ADAPTIVE LOOP In figures below; K = VTM transformation ratio V f = PRM output (Factorized Bus Voltage) RO = VTM output resistance V O = VTM output VL = Desired load voltage
Voltage Transformation Module MT036 SERIES vicorpower.com Rev. 1.0 3/08 Vicor Corporation
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