DatasheetsPDF.com

uRAM3TN3 Dataheets PDF



Part Number uRAM3TN3
Manufacturers Vicor Corporation
Logo Vicor Corporation
Description Output Ripple Attenuation Module
Datasheet uRAM3TN3 DatasheetuRAM3TN3 Datasheet (PDF)

PRELIMINARY 45 Features • >40dB ripple attenuation from 60Hz to 1MHz • Integrated OR’ing diode supports N+1 redundancy • Significantly improves load transient response • Efficiency up to 98% • User selectable performance optimization • Combined active and passive filtering • 3-30Vdc input range • 20 and 30 Ampere ratings Data Sheet MicroRAM TM Output Ripple Attenuation Module Patents Pending Shown actual size: 2.28 x 1.45 x 0.5 in 57,9 x 36,8 x 12,7 mm Product Highlights Vicor’s MicroRAM .

  uRAM3TN3   uRAM3TN3


Document
PRELIMINARY 45 Features • >40dB ripple attenuation from 60Hz to 1MHz • Integrated OR’ing diode supports N+1 redundancy • Significantly improves load transient response • Efficiency up to 98% • User selectable performance optimization • Combined active and passive filtering • 3-30Vdc input range • 20 and 30 Ampere ratings Data Sheet MicroRAM TM Output Ripple Attenuation Module Patents Pending Shown actual size: 2.28 x 1.45 x 0.5 in 57,9 x 36,8 x 12,7 mm Product Highlights Vicor’s MicroRAM output ripple attenuation module combines both active and passive filtering to achieve greater than 40dB of noise attenuation from 60Hz to 1Mhz. The MicroRAM operates over a range of 3 to 30Vdc, is available in either 20 or 30A models and is compatible with most manufacturers switching converters including Vicor’s 1st and 2nd Generation DC-DC converters. The MicroRAM’s closed loop architecture greatly improves load transient response and with dual mode control, insures precise point of load voltage regulation, The MicroRAM supports redundant and parallel operation with its integrated OR’ing diode function. It is available in Vicor’s standard micro package (quarter brick) with a variety of terminations for through hole, socket or surface mount applications. Absolute Maximum Ratings Parameter +In to –In +In to –In Load current Ripple Input (Vp-p) Ripple Input (Vp-p) Mounting torque Pin soldering temperature Pin soldering temperature Storage temperature (C, T-Grade) Storage temperature (H-Grade) Storage temperature (M-Grade) Operating temperature (C-Grade) Operating temperature (T, H-Grade) Operating temperature (M-Grade) Rating 30 40 40 100 500 4-6 (0.45-0.68) 500 (260) 750 (390) -40 to +125 -55 to +125 -65 to +125 -20 to +100 -40 to +100 -55 to +100 Unit Vdc Vdc Adc mV mV In. lbs (Nm) °F (°C) °F (°C) °C °C °C °C °C °C Notes Continuous 100ms Continuous 60Hzc100 kHz 100kHz–2MHz 6 each, 4-40 screw 5 sec; wave solder 7 sec; wave solder Baseplate Baseplate Baseplate Thermal Resistance Parameter Baseplate to sink; flat, greased surface Baseplate to sink; with thermal pad (P/N 20264) Baseplate to ambient Baseplate to ambient; 1000 LFM Typ 0.16 0.14 8.0 1.9 Unit °C/Watt °C/Watt °C/Watt °C/Watt Part Numbering uRAM Product 2 Type 2 = 20A 3 = 30A C Product Grade C = –20°C to +100°C T = –40°C to +100°C H = –40°C to +100°C M = –55°C to +100°C 2 Pin Style* 1 = Short Pin 2 = Long Pin S = Short ModuMate N = Long ModuMate 1 Baseplate 1 = Slotted 2 = Threaded 3 = Thru-hole *Pin styles S & N are compatible with the ModuMate interconnect system for socketing and surface mounting. Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 MicroRAM Rev. 1.1 Page 1 of 8 Set your site on VICOR at www.vicorpower.com PRELIMINARY Electrical Characteristics Electrical characteristics apply over the full operating range of input voltage, output power and baseplate temperature, unless otherwise specified. All temperatures refer to the operating temperature at the center of the baseplate. µRAM MODULE SPECIFICATIONS (-20°C to +100°C baseplate temperature) Parameter Operating current range µRAM2xxx µRAM3xxx Operating input voltage Transient output response Load current step <1A/µsec Transient output response Load current step <1A/µsec (CTRAN = 820µF) VHR headroom voltage range(1) @ 1A load Output ripple Input Vp-p = 100mV 325 Min 0.02 0.02 3.0 Typ Max 20 30 30 50 Unit A A Vdc mVp-p Notes No internal current limiting. Converter input must be properly fused such that the µRAM output current does not exceed the maximum operating current rating by more than 30% under a steady state condition. Continuous Step load change; see Figures 9, 12, & 15, pp. 6-7 Optional capacitance CTRAN can be used to increase transient current capability; See Figures 1 & 2 on p. 3 and Figures 10, 13, & 16 on pp. 6-7 See Figures 5, 6 & 7 See Table 1 for headroom setting resistor values Ripple frequency 60Hz to 100kHz; optional capacitor CHR = 100µF required to increase low frequency attenuation as shown in Figures 3a and 3b see Figures 8, 11, & 14, pp. 6-7 Ripple frequency 100kHz to 2MHz; see Figures 8, 11, & 14, pp. 6-7 See Table 1 R SC value Vin – Vout 50 mVp-p 425 10 5 mV mVp-p mVrms Output ripple Input Vp-p = 500mV SC output voltage(2) OR’ing threshold µRAM bias current Power Dissipation µRAM2xxx VHR = 380mV@1A µRAM3xxx VHR = 380mV@1A 7.5 11.5 1.23 10 10 5 mVp-p mVrms Vdc mV 60 mA W W Vin = 28V; Iout = 20A Vin = 28V; Iout = 30A (1) Headroom is the voltage difference between the +Input and +Output pins. RHR = (µRAM +Out/VHR) x 2.3k (see Table 1 for example values) SC resistor is required to trim the converter output up to accommodate the headroom of the µRAM module when remote sense is not used. This feature can only be used when the trim reference of the converter is in the 1.21 to 1.25 Volt range. (see Table 1 with calculated RSC resistor values) RSC = ((µRAM +Out)/1.23V x 1k) – 2k (2) µRAM Out 3.0V 5.0V 12.0V 15.0V 24.0V 28.0V VHR @ 1A 37.


uRAM3TN2 uRAM3TN3 uRAM3TS1


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)