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| MEDICAL & MILITARY MI-RAM Series M I L I TA R Y C O T S O U T P U T R I P P L E AT T E N U AT O R M O D U L E S Features * * * * * * * * Compatible with all MI- series modules Military Specification Compliance Environments: MIL-STD-810 Efficiency 93-99% Operating Temperature to 100C No adjustment required Reduces output PARD to < 10mVp-p Full attenuation up to 20A load Specifications INPUT Input Voltage Range DC Voltage Drop 5Vdc to 50Vdc 0.34 to 0.38 No load to full load STANDARDS AND APPROVALS Spikes Conducted EMI 50% nom line voltage per MIL-STD-6051 50ms CE102 per MIL-STD-461D Environmental (MIL-STD-810D) Altitude - Method 500.2 40,000 ft 86,240 % hours 9 g's 20 g's 40 g's OUTPUT Efficiency Output Noise & Ripple Output Voltage Accuracy DC Voltage Drop Full Load Current 93 to 99% MI-200: 2mVp-p typical 10%-100% load MI-J00: 6mV p-p typical 10%-100% load 99.5% to 100.5% 0.34 to 0.38 No load to full load MI-RAM-I1: 10A MI-RAM-M1: 10A MI-RAM-I2: 20A MI-RAM-M2: 20A Humidity - Method 507.2 Acceleration - Method 513.3 Vibration - Method 514.3 Shock - Method 516.3 Reliability (MIL-HDBK-217E) 25C Ground Benign 50C Naval Sheltered 885,917 hours 87,068 hours 49,153 hours OPERATING Isolation Characteristics Input / Output / Base 250V rms 65C Airborne inhabited cargo ENVIRONMENTAL Part number Storage Temperature Operating Temperature (baseplate) Power Cycling Burn-in Temperature Cycling MI-RAM-I2 -55C to +125C -40C to +100C 12hrs 25 cycles 48 hrs, 12cycles -65C to +100C MI-RAM-M2 -65C to +125C -55C to +100C 96hrs 200 cycles 48hrs, 12cycles -65C to +105C -55C, +80C MECHANICAL Weight Dimensions 85 grams 57.9 x 61 x 12.7mm Electrical Considerations TRANSIENT RESPONSE AND DYNAMIC RANGE: Full rated noise attenuation will be maintained at the MI-RAM output for step load changes up to 10% of the rated output current of the source converter, with the MI--RAM exhibiting an underdamped output excursion of less than 10mV pp. Some degradation in noise attenuation during the transient response period following the step may be exhibited for larger load changes. Adding output capacitance to the MI-RAM will increase the dynamic rejection range. Test Data Supplied at these -40C, +80C Temperatures Derating NAVMATP-4855-1A SENSE CONNECTION: Both sense-in and sense-out connections are provided on the MI-RAM. Sensein connections must be connected to the corresponding sense connections on the Vicor converter from which the MI-RAM is powered. Sense-out pins on the MI-RAM must be connected either directly to the MI-RAM power-output pins, or at the point of load. OUTPUT LOAD CHARACTERISTICS: When used in combinations with Vicor DC-DC converters, and with sense leads connected, the MI-RAM will be stable for any non-inductive load. 380 |
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