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MI - RAM Features TM Military Ripple Attenuator Modules " Reduces output PARD to <10mV pp " Full attenuation up to 20A load " Compatible with all MI-Series units from 5 to 50Vdc output " No adjustments required " 93%-99% efficiency " Converter sense, trim, OV and OC retained " MIL-STD-810 environments " Size: 2.28" x 2.4" x 0.5" (57,9 x 61,0 x 12,7mm) Product Highlights The MI-RAM is designed for military applications where extremely low noise outputs are required. When used with any Vicor MI-Series DC-DC converter, the MI-RAM reduces both line frequency related ripple and switching noise to less than 10mV p-p, DC to 20MHz. The combination of the MI-RAM with an MI converter provides the output noise performance of a linear supply at a power density in excess of 15W/in3. All of the features of the MI-Series converter remain available while using the MI-RAM, including output voltage trimming, OVP and OTP (MI-200 only), current limiting, remote sense, and output inhibit. All units are manufactured in ISO 9001-registered facilities. Full epoxy encapsulation in a low profile package enables the MI-RAM to meet MIL-STD-810 environmental testing requirements. Attenuation vs. Frequency (typical) 25 db 30 db 35 db Attenuation 40 db 45 db 50 db 55 db 60 db 10 Hz 100 Hz 1 KHz 10 KHz Frequency 100 KHz 1 MHz 10 MHz Specifications (At TBP = 25C, unless otherwise specified) PARAMETER Output noise and ripple MIN TYP 2.0 6.0 MAX UNITS NOTES 3.0 mV pp MI-200; 10% to 100% load 10.0 mV pp MI-J00; 10% to 100% load Input voltage range 5Vdc 50 Vdc Output voltage accuracy 99.5 100.5 % Of MI source converter Full load current 10 A MI-RAM-I1 and MI-RAM-M1 20 A MI-RAM-I2 and MI-RAM-M2 DC voltage drop 0.34 0.38 10% to full load Dissipation = (DC voltage drop x load current) + (Vin x 15 mA) Isolation 250 Vrms Input/output to baseplate Weight 3.0 (85) ounces (grams) Product Grade Specifications PARAMETER I - Grade Storage temperature Operating temperature (baseplate) Power cycling burn-in Temperature cycled with power off 17C per minute rate of change Test data supplied at these temperatures* Warranty Environmental compliance -55C to +125C -40C to +100C 12 hours, 25 cycles 12 cycles -65C to +100C -40C, +80C 2 years MIL-STD-810 PRODUCT GRADE M- Grade -65C to +125C -55C to +100C 96 hours, 200 cycles 12 cycles -65C to +100C -55C, +80C 2 years MIL-STD-810 *Test data available for review or download from vicorpower.com Mechanical Drawing 2.28 (57,9) 0.49 (12,4) 1.30 (33,0) 0.65 (16,5) 0.300.015 (7,6)(0,38) 4 3 2.10 (53,4) 0.080 Dia (2) places Solder plate over copper alloy 9 8 1.40 1.00 (35,6) 0.70 (25,4) 0.40 (17,8) (10,2) 0.35 0.015 (8,9)(0,38) MI-RAM 2 1 7 6 5 Input to the converter (10V/cm) Output from the RAM (2mV/cm) 0.15 (3,8) Pin # 1 2 3 4 5 6 7 8 9 Function +In +Sense In -Sense In -In +Out +Sense NC -Sense -Out FULL R 0.15 (3,8) 1.90 (48,3) 0.040 (1,0) Dia (7) places Solder plate over copper alloy Product ID this surface 0.22 (5,6) Min. 0.30 (7,6) Min. 2.40 (61,0) 1.75 (44,4) Max. 0.50 (12,7) +0.030 (0,76) -0.000 (0) 0.01 MI-RAM 04/03 1 of 1 0.12 (3,0) Aluminum Base |
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