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MI-IAM
Features
TM
Military Input Attenuator Modules
" Inputs: 28Vdc and 270Vdc " MIL-STD-461C/D EMI compliance " MIL-STD-810 environments " MIL-STD-704A & MIL-STD1275A transients and spikes
" Output power: Up to 200W from any combination of MI-200 or MI-J00 modules " Expansion port for additional power " Short circuit protected " Size: 2.28" x 2.4" x 0.5" (57,9 x 61,0 x 12,7mm)
Product Highlights
The MI-IAM is an accessory product to Vicor's MI-Series of DC-DC converters that provides the EMI/RFI filtering and transient protection required in military applications. Designed for use with all 28V and 270V input MI-200 or MI-J00 converters, the MI-IAM can drive any number of modules with output loads to 200W. The MI-IAM meets the conducted emissions specifications of MILSTD-461C/D and offers complete input transient, surge, and spike protection to the most severe levels of MIL-STD-1275A and 704A. Reverse polarity protection and overvoltage lockout provide additional safeguards against potentially damaging line conditions. High power arrays can be configured using the expansion port capability of the MI-IAM.
" Reverse polarity protection
Specifications
(At TBP = 25C, nominal line and 75% load, unless otherwise specified)
PARAMETER Input Characteristics 28Vdc modules Steady state input Input spike limit MIN 18.8 -600 -250 TYP 28 MAX 50 600 250 100 UNITS Vdc Vdc Vdc Vdc Vdc Amps Vdc Vdc Vdc Vdc Vdc Amps Watts % Iin NOTES
270Vdc modules
Input surge limit Overvoltage shutdown 50 Reverse polarity protection Recommended fuse Steady state input 125 Input spike limit -600
270
All models
Input surge limit Overvoltage shutdown 400 Reverse polarity protection Recommended fuse No load power dissipation Inrush current
20 400 800 600 500
10S, 50 per MIL-STD-704A 100S, 15mJ per MIL-STD-1275A 60mS, 0.5 per MIL-STD-1275A 100mS, automatic recovery Shunt diode: input fuse required F03A type 10S, 50 100S, 15mJ 100mS, 0.5 100mS, automatic recovery Shunt diode: input fuse required F03A type Steady state, l in 10mS MIL-STD-461C MIL-STD-461D MIL-STD-461C MIL-STD-461D
0.5 110
4 1.5 125
EMC Characteristics; MIL-STD-461C/D Input power leads Conducted emissions CE01, CE03, CE07 CE101, CE102 Conducted susceptibility CS01, CS02, CS06 CS101, CS114, CS116 60 420 250 20 4 1,500 1,500 70,000 86 / 240 9 20 40 3,352,133 804,512 653,666 97 0.14 Vdc Vdc Watts Amps Amps Vrms Vrms feet % / hours g's g's g's hours hours hours % C/Watt 100 C See product grade specifications 125 C See product grade specifications ounces (grams)
Output Characteristics Clamp voltage 28Vdc input 270Vdc input Output power Overload protection 28Vdc input 270Vdc input Isolation Characteristics Input to base Output to base Environmental (MIL-STD-810) Altitude - method 500.2 Humidity - method 507.2 Acceleration - method 513.3 Vibration - method 514.3 Shock - method 516.3 Reliability (MIL-HDBK-217F) 25C Ground Benign: G.B. 50C Naval Sheltered: N.S. 65C Airborne Inhabited Cargo: A.I.C. Thermal Characteristics Efficiency Baseplate to sink Operating temperature, baseplate Storage temperature Mechanical Specifications Weight
} Foldback threshold; auto recovery with latched shutdown after 10mS
1 min. 1 min. Procedure II Procedure 1, cycle 1 Procedure Procedure 1, category 6 Procedure 1
3 (85)
MI-IAM 04/03
1 of 2
MI-IAM Model Selection Chart
Model Number
MI-A22-MU MI-A66-MU MI-A22-IU MI-A66-IU
Nominal Input Voltage
28Vdc 270Vdc 28Vdc 270Vdc
Input Range
18.8-50Vdc 125-400Vdc 18.8-50Vdc 125-400Vdc
Compatible MI-Series
MI-22x and MI-J2x-Mx MI-26x and MI-J6x-Mx MI-22x and MI-J2x-Ix MI-26x and MI-J6x-Ix
Converter
M-grade M-grade I-grade I-grade
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 Derating -55C to +125C -40C to +100C 12 hours, 25 cycles 12 cycles -65C to +100C -40C, +80C 2 years MIL-STD-810 NAVMAT P - 4855-1A 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 NAVMAT P - 4855-1A
*Test data available for review or download from vicorpower.com
MI-IAM Safe Operating Area*
28Vdc Input
VOLTS-PEAK VALUE OF SPIKE VOLTAGE 500 400 300 200 100 0 -100 -200 -300 -400 -500 -600 10-6 1s 10-5 10s 10-4 100s 10-3 1ms TIME (SECONDS) 10-2 10ms 10-1 100ms 100 1s Reverse Polarity Protection
OVP
270Vdc Input
VOLTS-PEAK VALUE OF SPIKE VOLTAGE
600
Ratings Exceeded
Ratings Exceeded 800 600 400 200 0 200 400 600 Reverse Polarity Protection
OVP
50V
500V 400V
10-6 1s
10-5 10s
10-4 100s
10-3 1ms TIME (SECONDS)
10-2 10ms
10-1 100ms
100 1s
* Refer to input characteristics
Mechanical Drawing
2.28 (57,9)
0.49 (12,4) 0.65 (16,5) 1.30 (33,0)
Typical Connection Diagram
0.080 Dia (2) places Solder plate over copper alloy
+In +In
+ -
0.30.015 (7,6)(0,38)
4700 pF
4 3 2.10 (53,4) 2 1 0.15 (3,8) FULL R 0.15 (3,8)
9 8
MI-IAM VI-IAM
7 6 5
1.40 1.00 (35,6) 0.70 (25,4) 0.40 (17,8) (10,2)
0.35 0.015 (8,9)(0,38)
Pin # 1 2 3 4 5 6 7 8 9
Function +In +In -In -In +Out Gate In Parallel Gate Out -Out
+Out Gate In Parallel Gate Out -Out C1
+In Gate In MI-Converter Gate Out -In
+Out +S Trim -S -Out
-In -In
MI-IAM Input Voltage Range Capacitance (C1) 28Vdc (18.8-50V) 390F (Max.) 270Vdc (125-400V) 27F (Max.)
4700 pF
0.040 (1,0) Dia (7) places Solder plate over copper alloy Product ID this surface 2.40 (61,0) 0.30 (7,6) Min. 1.75 (44,4) Max.
1.90 (48,3)
0.22 (5,6) Min.
0.50 (12,7) 0.12 (3,0)
+0.030 (0,76) -0.000 (0)
.01 Aluminum Base
MI-IAM 04/03
2 of 2

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