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Product Highlights

The MI-ComPAC is a complete

single, dual, or triple output 

DC-DC power supply that delivers

up to 300W from inputs of 28Vdc

or 270Vdc. 

The MI-ComPAC meets the 

conducted emissions and conducted

susceptibility specifications of 

MIL-STD-461C/D/E and offers

complete input transient, surge, and

spike protection to the most severe

levels of MIL-STD-1275A, 704A.

Reverse polarity protection and

over/undervoltage lockout provide

additional safeguards against

potentially damaging line

conditions. The MI-ComPAC also

features a master disable. 

Inputs: 

28Vdc per MIL-STD-704A, MIL-STD-1275A

270Vdc per MIL-STD-704D/E

Outputs: 1 to 3, 2 to 48Vdc

Up to 5W/in

3

MIL-STD-461C/D/E EMI compliance

High efficiency

Remote sense

ZVS/ZCS power architecture

Low noise FM control

Reverse polarity protection

Size — 1- up: 8.6" x 2.5" x 0.99"

(219,2 x 64,5 x 25,1mm)

Size — 2- up: 8.6" x 4.9" x 0.99"

(219,2 x 126,0 x 25,1mm)

Size — 3- up: 8.6" x 7.3" x 0.99"

(219,2 x 187,45 x 25,1mm)

Output Power/Current

5V

<5V

S

=

300W

P

=

90A

Output Power/Current

5V

<5V

V

=

150W

30A

U

=

200W

S

=

60A

Output Power/Current

5V

<5V

Y

=

50W

10A

X

=

75W

15A

W

=

100W

20A

V

=

30A

Product Grade

I = –40°C to +85°C

M = –55°C to +85°C

Input Voltage

Nominal

Range

2 =28Vdc 18 – 50V

6 =270Vdc 125 – 400V

(1)

Number of

Single Output

Modules

MI-LC

– 

50 – 100W

8.6" x 2.5" x 0.99"

1

MI-MC

– 

150 – 200W

8.6" x 4.9" x 0.99"

2

MI-NC

– 

300W

8.6" x 7.3" x 0.99"

3

Dual Output

MI-PC

– 

100 – 200W

8.6" x 4.9" x 0.99"

2

MI-QC

– 

200 – 300W

8.6" x 7.3" x 0.99"

3

Triple Output

MI-RC

– 

150 – 300W

8.6" x 7.3" x 0.99"

3

MI-ComPAC

TM

Military DC-DC Power Supplies

(1)

These units rated at 75% load from 125-150Vin: 5Vout @ 100W; 2Vout and 3.3Vout @ 30A.

Features

Configuration Chart

Output Voltage

Z = 2V

T = 6.5V

N = 18.5V

Y = 3.3V R = 7.5V

3 = 24V

0 = 5V

M = 10V

L = 28V

X = 5.2V 1 = 12V

J = 36V

W= 5.5V P = 13.8V K = 40V

V = 5.8V 2 = 15V

4 = 48V

Conduction Cooled Models Available Add "-CC" to the end of the part number.

(Consult factory for details.)

MI-ComPAC   11/02    1 of 4

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Specifications

(At TBP = 25°C, nominal line and 75% load, unless otherwise specified)

Specifications 

PARAMETER

MIN

TYP

MAX

UNITS

NOTES

Input Characteristics

28Vdc input modules

Steady state input

18

28

50

Vdc

Low line lockout

16

Vdc

Automatic recovery

Input spike limit

-600

+600

Vdc

20µs, 50

per MIL-STD-704A

-250

+250

Vdc

100µs, 15mJ per MIL-STD-1275A

Input surge limit

100

Vdc

60mS, 0.5

per MIL-STD-1275A

Overvoltage shutdown

50

Vdc

100mS automatic recovery

Reverse polarity protection

Shunt diode: input fuse required

Recommended fuse

10

(1)

Amps

F03A type

270Vdc input modules 

Steady state input

125

270

400

Vdc

Low line lockout

125

Vdc

Automatic recovery

Input spike limit

+800

Vdc

20µs, 50

-600

+600

Vdc

100µs, 15mJ

Input surge limit

500

Vdc

100ms, 0.5

Overvoltage shutdown

400

Vdc

100µs automatic recovery

Reverse polarity protection

Shunt diode: input fuse required

Recommended fuse

2

(1)

Amps

F03A type

All models

No load power dissipation

1.5

(1)

2

(1)

Watts

Master disable input current

(2)

4

mA

Sink; disables all outputs

(Absolute max., 20mA)

Inrush current

110

125

%, I

in

Steady state I

in

, 10ms

EMC Characteristics; MIL-STD-461C/D/E

Input power leads

Conducted emissions

CE01, CE03, CE07

MIL-STD-461C — 1-up

CE101, CE102

MIL-STD-461D — 1-up

CE101

MIL-STD-461E — 2-up & 3-up

Conducted susceptibility

CS01, CS02, CS06

MIL-STD-461C — 1-up

CS101, CS114, CS116

MIL-STD-461D — 1-up

CS101, CS114, CS116

MIL-STD-461E — 2-up & 3-up

Output Characteristics

Setpoint accuracy

0.5

1.0

% Vnom

Load/line regulation

0.2

0.5

% Vnom

LL to HL, NL to 10%

0.05

0.2

% Vnom

LL to HL, 10% to FL

Output temperature drift

0.01

0.02

%/°C

Output noise – p-p

1.0

1.5

% Vnom

Whichever is greater

100

150 mV

20MHz 

BW

Output voltage trimming

(3)

50

110

% Vnom

Remote sense compensation

0.5

Vdc

OVP setpoint

115

125

135

% Vnom

Latching

Current limit

105

125

% Inom

Auto restart

Short circuit current

(4)

20

130

% Inom

Isolation Characteristics

Input to output

4,242

Vrms

1 min.

Input to case

28Vdc input

2,121

Vrms

1 min.

270Vdc input

2,500

Vrms

1 min.

Output to case

500

Vrms

1 min.

Thermal Characteristics

Efficiency

81

%

Operating temperature, case

+85

˚C

See product grade

Storage temperature

+100

˚C

See product grade 

Shutdown temperature

+90

+95

+105

˚C

Cool and recycle power to restart

Mechanical Specifications

Weight

1- up

1.2 (544)

pounds (grams)

2- up

2.4 (1248)

pounds (grams)

3- up

3.6 (1633)

pounds (grams)

Connector screw torque

3.5 (0.4)

inches-pounds (N-M)

}

(1)

Per internal module configuration.

(2)

Multiply minimum x 2 for 2-ups and x 3 for 3-ups.

(3)

10V, 12V, and 15V outputs, standard trim range ±10%. Consult factory for wider trim range.

(4)

Output ranges of 5V or less incorporate foldback current limiting, outputs of 10V and 

above incorporate straight line current limiting.

MI-ComPAC   11/02    2 of 4

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Long Term Safe Operating Area Curves*

Disable Circuit

Thermal Considerations

20 mA Max.

Disable

DIS+

DIS–

+

V

VOLTS-PEAK VALUE OF SPIKE VOLTAGE

TIME (SECONDS)

1s

0

10

100ms

-1

10

10ms

-2

10

1ms

-3

10

100

µ

s

-4

10

10

µ

s

-5

10

1

µ

s

-6

10

-600

-500

-400

-300

-200

-100

0

100

200

300

400

500

600

Ratings Exceeded

Reverse Polarity

Protection

50V

OVP

VOLTS-PEAK VALUE OF SPIKE VOLTAGE

TIME (SECONDS)

1s

0

10

100ms

-1

10

10ms

-2

10

1ms

-3

10

100

µ

s

-4

10

10

µ

s

-5

10

1

µ

s

-6

10

600

400

200

0

200

400

600

800

Ratings Exceeded

Reverse Polarity

Protection

500V

OVP

400V

28Vdc Input

270Vdc Input

* 1% duty cycle max., for short duration transient capability refer to specifications

• Thermal impedance, chassis-to-air, is provided for 1-up, 2-up and 3-up MI-ComPAC 

package configurations as a function of air flow.

• Case temperature = (total power dissipated x thermal impedance) + ambient temperature.

• Watts dissipated per output = (output power ÷ efficiency) – output power.

(1)

To order optional heat sink add –H1 to part number

Thermal Impedance — Case-to-Air (°C/W)

Standard Units

With Optional Heat Sink

(1)

1-up

2-up

3-up

1-up

2-up

3-up

Free Air (Horiz.)

3.6

1.7

1.4

2.1

1.3

1.0

Forced Convection Through Heat Sink Fins

50 LFM

2.7

1.4

1.3

1.5

1.1

0.9

100 LFM

2.3

1.3

1.1

1.2

0.9

0.7

250 LFM

1.6

1.0

0.8

0.7

0.5

0.4

500 LFM

1.2

0.7

0.6

0.4

0.3

0.3

750 LFM

0.9

0.5

0.5

0.3

0.2

0.2

1000 LFM

0.8

0.4

0.4

0.2

0.2

0.2

Disable Current

• 4mA DC minimum for 1-up ComPAC

•  8mA DC minimum for 2-up ComPAC

•  12mA DC minimum for 3-up ComPAC

The MI-ComPAC incorporates an optically isolated master disable input which will shut down the 

MI-ComPAC when a current is driven through the disable terminals.

MI-ComPAC   11/02    3 of 4

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12

ø0.150 

±

 0.005 THRU 6 PLACES

(ø3,81 

±

 0,13)

1

2

3

4

5

4.96

(126,0)

4.42

(112,3)

7.380

(187,45)

0.18

(4,6)

6.00

(152,4)

2.76

(70,1)

7.00

(177,8)

2.288

(58,12)

2.420

(61,47)

0.20

(5,1)

0.19

(4,8)

A

E

D

C

B

A

E

D

C

B

A

E

D

C

B

0.41 (10,41)

6.95 (176,53)

6.37 (161,80)

5.98 (151,89)

5.59 (141,99)

5.25 (133,35)

4.53 (115,06)

3.95 (100,33)

3.56 (90,42)

3.17 (80,52)

2.83 (71,88)

2.11 (53,59)

1.53 (38,86)

1.14 (28,96)

0.75 (19,05)

#10-32 STUD

 2 PLACES

#8-32 STUD

 6 PLACES

0.25 TYP 

D

C

B

A

E

D

C

B

A

A

E

D

C

B

E

#10-32 STUD

 2 PLACES

#8-32 STUD

 2 PLACES

OUTPUT 1

OUTPUT 2

OUTPUT 1

OUTPUT 1

OUTPUT 2

OUTPUT 3

0.41 (10,41)

2.11 (53,59)

1.53 (38,86)

1.14 (28,96)

0.75 (19,05)

12

ø0.150 

±

 0.005 THRU 4 PLACES

(ø3,81 

±

 0,13)

1

2

3

4

5

2.156

(54,76)

0.18

(4,6)

2.76

(70,1)

6.00

(152,4)

0.91

23,1)

2.54

(64,5)

0.20

(5,1)

0.19

(4,8)

0.20

(5,1)

E

D

C

B

A

0.25 TYP 

#8-32 STUD

 2 PLACES

OUTPUT 1

(

0.41 (10,41)

4.53 (115,06)

3.95 (100,33)

3.56 (90,42)

3.17 (80,52)

2.83 (71,88)

2.11 (53,59)

1.53 (38,86)

1.14 (28,96)

0.75 (19,05)

12

ø0.150 

±

 0.005 THRU 5 PLACES

(ø3,81 

±

 0,13)

#10-32 STUD

 2 PLACES

1

2

3

4

5

3.58

(90,9)

3.04

(77,2)

4.96

(126,0)

4.562

(115,87)

0.18

(4,6)

6.00

(152,4)

2.76

(70,1)

2.281

(57,94)

0.20

(5,1)

0.19

(4,8)

#8-32 STUD

 4 PLACES

A

E

D

C

B

A

E

D

C

B

4.

0.25 TYP 

A

E

D

C

B

OUTPUT 1

OUTPUT 2

OUTPUT 1

OPTIONAL HEATSINK (H1)

STANDARD UNITS

1.12

(28,4)

1.37

(34,80)

0.99

(25,15)

0.5

(12,57)

0.41

(10,4)

9.25

±

.120

(235,0 

±

3,05)

8.63

±

.025

(219,2

±

,64)

0.5

(12,57)

Measure case temperature on this surface.

Mechanical Drawing

Inputs

Outputs

MI-MC

MI-PC

MI-NC

MI-QC

MI-RC

Inputs

1 – Ground

4 Disable –

2 – Input

5 Disable +

3 +Input

Outputs

Output #1

Output #2

Output #3

A +Output A +Output A +Output 

 

B +Sense

B +Sense

B +Sense

C Trim

C Trim

C Trim

D –Sense

D –Sense

D –Sense

E –Output E –Output E –Output 

1-Up

2-Up

3-Up

MI-LC

MI-ComPAC   11/02    4 of 4