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Product Highlights

Vicor’s MI-MegaMod family 

of single, dual, and triple output 

DC-DC converters provide power

system designers with cost-

effective, high-performance, off-

the-shelf solutions to applications

that might otherwise require a

custom supply. 

Incorporating standard MI-200 

or MI-J00 family converters in

rugged, chassis mount packages,

MegaMods can be ordered with

single, dual, or triple outputs,

having a combined output power

of up to 300W. Totally isolated

outputs eliminate efficiency

penalties and output interaction

problems. 

MI - MegaMod

TM

Family

Military Chassis Mount DC-DC Converters 10 to 300W

Single, Dual, Triple Outputs

Inputs: 

28, 155, 165 and 270Vdc

Any output: 2 to 48Vdc

Up to 13.5W/in

3

High efficiency

Remote sense

ZVS/ZCS power architecture

Low noise FM control

Size — 1- up half-size: 2.58" x 2.5" x 0.62"

(65,5 x 63,5 x 15,7mm)

Size — 1- up full-size: 4.9" x 2.5" x 0.62"

(124,5 x 63,5 x 15,7mm)

Size — 2- up half-size: 2.58" x 4.9" x 0.62"

(65,5 x 124,5 x 15,7mm)

Size — 2- up full-size: 4.9" x 4.9" x 0.62"

(124,5 x 124,5 x 15,7mm)

Size — 3- up half-size: 2.58" x 7.3" x 0.62"

(65,5 x 185,4 x 15,7mm)

Size — 3- up full-size: 4.9" x 7.3" x 0.62"

(124,5 x 185,4 x 15,7mm)

Output Power/Current

5V

<5V

S

=

300W

P

=

90A

Output Power/Current

5V

<5V

V

=

150W

30A

U

=

200W

S

=

60A

Output Power/Current

Full-Size

Half-Size

5V <5V

5V <5V

Y = 50W 10A

A = 10W —

X = 75W 15A

Z = 25W 5A

W = 100W 20A

Y = 50W 10A

V =

30A

Product Grade

Full-Size

I = –40°C to +85°C

M = –55°C to +85°C

Half-Size

I = –40°C to +100°C

M = –55°C to +100°C

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

Input Voltage

Nominal

Range Transient

2 =28Vdc 18 – 50V

(1)

60V

5 =155Vdc 100 – 210V

230V

6 =270Vdc 125 – 400V

(2)

475V

7 =165Vdc 100 – 310V

(3)

Full-Size MegaMods

Number of

Single Output

Modules

MI-L

– 

50 – 100W

4.9" x 2.5" x 0.62"

1

MI-M

– 

150 – 200W

4.9" x 4.9" x 0.62"

2

MI-N

– 

300W

4.9" x 7.3" x 0.62"

3

Dual Output

MI-P

– 

100 – 200W

4.9" x 4.9" x 0.62"

2

MI-Q

– 

200 – 300W

4.9" x 7.3" x 0.62"

3

Triple Output

MI-R

– 

150 – 300W

4.9" x 7.3" x 0.62"

3

Half-Size MegaMods

Single Output

MI-LJ

– 

10 – 50W

2.58" x 2.5" x 0.62"

1

Dual Output

MI-PJ

– 

20 – 100W

2.58" x 4.9" x 0.62"

2

Triple Output

MI-RJ

– 

30 – 150W

2.58" x 7.3" x 0.62"

3

(1)

16V operation at 75% load.

(2)

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

Half-Size – 5Vout @ 50W; 2V and 3.3V @ 10A.

(3)

For use with Vicor’s MI-AIM

Features

Configuration Chart

MI-MegaMod   10/02    1 of 4

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Full-Size

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

PARAMETER

MIN

TYP

MAX

UNITS

NOTES

Input Characteristics 

Inrush charge

120 x 10

-6

200 x 10

-6

Coulombs

Nominal line, per module

Input reflected ripple current – pp:

10

% I

in

Nominal line, full load

Input ripple rejection

30 + 20Log

dB

120Hz, nominal line

20 + 20Log

dB

2400Hz, nominal line

No load power dissipation

1.35

2.0

Watts

Per module

Output Characteristics

Setpoint accuracy

0.5

1.0

% Vnom

Load/line regulation

0.05

0.2

% Vnom

LL to HL, 10% to FL

Load/line regulation

0.2

0.5

% Vnom

LL to HL, NL to 10%

Output temperature drift

0.01

0.02

% / °C

Over rated temperature

Long term drift

0.02

%/1K hours

Output ripple – p-p: 

10V

80

150

mV

20MHz bandwidth

12-48V

0.75

1.5

%

20MHz bandwidth

Output voltage trimming

(1)

50

110

% Vnom

Total remote sense compensation

0.5

Vdc

0.25V max. neg. leg

OVP setpoint

115

125

135

% Vnom

Recycle power 

Current limit

105

125

% Inom

Automatic restart

Short circuit current

130

% Inom

Control Pin Characteristics

Gate out impedance

50

Ohms

Gate in impedance

10

3

Ohms

Gate in open circuit voltage

6.0

Vdc

Use open collector

Gate in low threshold

0.65

Vdc

Gate in low current

6.0

mA

Isolation Characteristics

Isolation (input to output)

3,000

Vrms

Isolation (output to baseplate)

500

Vrms

Isolation (input to baseplate)

1,500

Vrms

Thermal Characteristics

Efficiency

80-90

%

Baseplate to chassis

0.1

°C/Watt

Thermal shutdown

90

95

105

°C

Mechanical Specifications

Weight

1-up

9.0 (255)

ounces (grams)

2-up

1.2 (525)

pounds (grams)

3-up

1.7 (780)

pounds (grams)

(

Vin

)

Vout

(

Vin

)

Vout

(1)

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

Specifications 

MI-MegaMod   10/02    2 of 4

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Specifications 

Half-Size

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

PARAMETER

MIN

TYP

MAX

UNITS

NOTES

Input Characteristics 

Inrush charge

60 x 10

-6

100 x 10

-6

Coulombs

Nominal line, per module

Input reflected ripple current – pp:

10

% I

in

Nominal line, full load

Input ripple rejection

30 + 20Log

dB

120Hz, nominal line

20 + 20Log

dB

2400Hz, nominal line

No load power dissipation

1.35

2.0

Watts

Per module

Output Characteristics

Setpoint accuracy

0.5

1.0

% Vnom

Load/line regulation

0.05

0.2

% Vnom

LL to HL, 10% to FL

Load/line regulation

0.2

0.5

% Vnom

LL to HL, NL to 10%

Output temperature drift

0.01

0.02

% / °C

Over rated temperature

Long term drift

0.02

%/1K hours

Output ripple – p-p: 

10V

80

150

mV

20MHz bandwidth

12-48V

0.75

1.5

%

20MHz bandwidth

Output voltage trimming

(1)

50

110

% Vnom

Total remote sense compensation

0.5

Vdc

0.25V max. neg. leg

Current limit

105

125

% Inom

Automatic restart

Control Pin Characteristics

Gate out impedance

50

Ohms

Gate in impedance

10

3

Ohms

Gate in open circuit voltage

6.0

Vdc

Use open collector

Gate in low threshold

0.65

Vdc

Gate in low current

6.0

mA

Isolation Characteristics

Isolation (input to output)

3,000

Vrms

Isolation (output to baseplate)

500

Vrms

Isolation (input to baseplate)

1,500

Vrms

Thermal Characteristics

Efficiency

80-90

%

Baseplate to chassis

0.1

°C/Watt

Mechanical Specifications

Weight

1-up

4.5 (127)

ounces (grams)

2-up

8.8 (250)

ounces (grams)

3-up

13.3 (377)

ounces (grams)

(

Vin

)

Vout

(

Vin

)

Vout

(1)

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

MI-MegaMod   10/02    3 of 4

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Mechanical Drawing

L- and LJ-Series

Inputs

Side view (all models)

Outputs

R- and RJ-Series

Q-Series

N-Series

2.58

(65,5)

HALF-SIZE

MODULE:

SER. NO.

4.90

(124,5)

TYP.

0.53

(13,5)

TYP.

1.60

(40,6)

3.20

(81,3)

 ø.150 (ø3,81) THRU

C'BORE ø.250 (ø6,35)

X .170 (4,32) DEEP

B

D

A

C

E

4

1

3

2

TOP VIEW

0.62

(16.0)

TYP.

5.52

(140,2)

TYP.

2.76

(70,1)

TYP.

0.19

(4,8)

TYP.

2.18

(55,4)

0.16

(4,1)

2.50

(63,5)

TYP.

DC-DC CONVERTER

MEGA MODULE

Baseplate (TYP.)

HALF-SIZE

MODULE:

HALF-SIZE

MODULE:

C

A

D

B

E

2

3

1

4

E

B

D

A

C

K

G

J

F

H

1

3

2

4

5

6

TOP VIEW

DC-DC CONVERTER

TM

MEGA MODULE

5

0.25

(6,4)

TYP.

2.26

(57,4)

2.26

(57,4)

0.19

(4,8)

4.90

(124,5) TYP.

C

A

D

B

E

1

3

2

4

4

H

F

J

G

K

E

B

D

A

C

B

A

C

D

E

P

M

L

N

Q

J

G

K

H

F

8

7

1

2

3

3

2

1

7

8

4

5

6

TOP VIEW

7

6.94

(176,3)

2.26

(57,4)

2.26

(57,4)

0.19

(4,8)

7.32

(185,9)

TYP.

DC-DC CONVERTER

MEGA MODULE

P- and PJ-Series

M-Series

M-Series

P- and PJ-Series

N-Series

Q-Series

R- and RJ-Series

L- and LJ-Series

Inputs

1 –Input

5 Gate Out #2

2 Gate Out #1

6 Gate In #2

3 Gate In #1

7 Gate Out #3

4 +Input

8 Gate In #3

Outputs

Output #1

Output #2

Output #3

A –Output F –Output

L –Output 

B –Sense

G –Sense

M –Sense

C Trim

H Trim

N Trim

D +Sense

J +Sense

P +Sense

E +Output K +Output

Q +Output

Mounting Information

Use #6 machine hardware torqued to 5-7 in-lbs.

1-Up

2-Up

3-Up

MI-MegaMod   10/02    4 of 4