1

MOR SERIES

120 WATT

Positive

Input

Input

Common

Output

Common

Positive

Output

100

Ω

100

Ω

Positive

Sense

Sense

Return

+

_

+

_

Share

Function

Share

Trim

Inhibit 2

PWM

Controller

Sync

In / Out

UVLO

Sync In

Sync Out

FET

Driver

Bias

Supply

Inhibit 1

1.7

µΗ

0.5

µΗ

1.3

µΗ

0.1

µΗ

3:2

6

µF

0.1

Ω

6

µF

0.015

µF

500 V

0.015

µF

500 V

600

µF

600

µF

• –55°C to +125°C operation

• 16 to 40 VDC input

• Fully isolated

• Magnetic feedback

• Fixed frequency 550 kHz typ.

• Topology – Single Ended Forward

• Will withstand transients of

up to 50 V for up to 120 msec.

• Output trim 60% to 110%

• Input and output side inhibit

• Remote sense

• Synchronization

• Parallel up to 5 units

• Output short circuit protection

MODELS

DESCRIPTION

With up to 120 watts of output power, the MOR Series™ of DC/DC

converters operates from a standard 28 volt bus and offers a wide

input range of 16 to 40 VDC. Full operation over the military temper-

ature range, –55°C to +125°C, makes the MOR Series an ideal

choice for military, aerospace, space, and other high reliability appli-

cations. In compliance with MIL-STD-704D, the converters will with-

stand transients of up to 50 volts for up to 120 milliseconds. Use

Interpoint’s FME28-461 EMI filter to pass MIL-STD-461C, CE03

requirements.

The MOR Series converters incorporate a single-ended forward

topology which uses a constant frequency Pulse Width Modulator

(PWM) current mode control design and switches at 550 kHz,

nominal. The converters also provide short circuit protection by

restricting the current to 125% of the full load output current. All

models offer two inhibits, one referenced to input common and one

referenced to output common. A remote sense function is available

on single output models.

Using the trim function, the MOR Series can provide any output from

2 to 33 VDC. For example, trimming the two 15 volt outputs of the

15 dual (MOR2815D) to 14 volts, and then stacking the outputs will

provide a 28 volt output. See Figure 11.

SINGLES

3.3

5

6.3

9.5

12

15

DUALS

±3.3

±5

±6.3

±9.5

±12

±15

Size (max): 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm) case U2

Case U2 (flanged, short leads) and case Z (tabbed, leads bent down)

are shown in the picture. Also available: flanged – leads bent down

(case V); tabbed – short leads (case Y) and leads bent up (case W).

See Section B8, cases U2, V, W, Y, and Z for dimensions and options.

Weight:

110 grams typical

Screening:

Standard, ES, or 883 (Class H). See Section C2 for screening options,

see Section A5 for ordering information.