Mechanical Drawing

5

6

7

8

9

4

3

2

1

0.080 Dia (2) places

Solder plate

over copper alloy

0.040 (1,0) Dia (7) places

Solder plate

over copper alloy

0.01

Aluminum Base

Product ID

this surface

Function

+In

–In

+Out

NC

–Sense

–Out

Pin #

1

2

3

4

5

6

7

8

9

FULL R

+0.030 (0,76)

-0.000 (0)

(5,6) Min.

(7,6) Min.

(44,4) Max.

2.40

2.28

0.12

0.50

1.90

0.65

(16,5)

0.49

(12,4)

0.30

±0.015

(7,6)

±(0,38)

0.15

2.10

(53,4)

1.30

0.40

(10,2)

0.35

± 0.015

(8,9)

±(0,38)

1.40

(35,6)

1.00

(25,4)

0.70

(17,8)

+Sense In

–Sense In

+Sense

MI-RAM

(57,9)

(33,0)

(3,8)

0.15

(3,8)

(48,3)

(3,0)

0.22

(12,7)

0.30

(61,0)

1.75

PARAMETER

MIN

TYP

MAX

UNITS

NOTES

Output noise and ripple

2.0

3.0

mV pp

MI-200; 10% to 100% load

6.0

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)

Input to the converter

(10V/cm)

Output from the RAM

(2mV/cm)

60 db

55 db

25 db

30 db

35 db

40 db

45 db

50 db

10 MHz

1 MHz

100 KHz

10 KHz

1 KHz

100 Hz

10 Hz

Frequency

Attenuation vs. Frequency (typical)

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

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.

MI - RAM

TM

Military Ripple Attenuator Modules

from 5 to 50Vdc output

and OC retained

(57,9 x 61,0 x 12,7mm)

Specifications

(At TBP = 25°C, unless otherwise specified)

Product Grade Specifications

Features

*Test data available for review or download from vicorpower.com

PARAMETER

PRODUCT GRADE

I- Grade

M- Grade

Storage temperature

-55°C to +125°C

-65°C to +125°C

Operating temperature (baseplate)

-40°C to +100°C

-55°C to +100°C

Power cycling burn-in

12 hours, 25 cycles

96 hours, 200 cycles

Temperature cycled with power off

12 cycles

12 cycles

17°C per minute rate of change

-65°C to +100°C

-65°C to +100°C

Test data supplied at these temperatures*

-40°C, +80°C

-55°C, +80°C

Warranty

2 years

2 years

Environmental compliance

MIL-STD-810

MIL-STD-810

MI-RAM 04/03

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