MOR283R3D datasheet(4/24 Pages) INTERPOINT

4 / 24 page

Paralleling (Share Pin)

By using the Share pin, up to five single or dual converters

may be paralleled for a total output power of up to 540 watts,

depending on model. To calculate available power, multiply the

number of converters (up to five) by their maximum output power.

Multiply the result by 90% for total available power. See Figure

8 for the internal circuit. The converters will share within 10% of

each other at 25% to 90% rated power. MOR converters feature

true n+1 redundancy for reliability in critical applications. See

Figure 9 for the proper connections.

All Positive Outputs and Positive Senses should be connected to

a common point. All Negative Outputs and Sense Returns should

be connected to a common point. The Share pin is referenced to

Sense Return. Leave the share pin floating (unconnected) if not

used. Also see Figure 9.

PoSitiVe SenSe, SenSe return

A special remote sensing feature maintains the desired output

voltage at the load. See Figure 9. When this feature is not used,

connect the sense lines to their respective output terminals. See

Figure 10. Remote sensing is available on single output models

only. Do not exceed 110% of Vout and do not exceed maximum

output power.

inCreaSe outPut Voltage by StaCking outPutS

Outputs may be stacked to increase the output voltage using a

dual model.

Dual outputs may be stacked to double the output voltage. See

Figure 11.

–

Load

Positive Input

Input Common

Positive Output

Inhibit 2

Output Common

Negative Output

MOR

Dual Output

Figure 11: StaCked outPutS – dual model

–

Positive Input

Sync In

Sync Out

Input Common

Positive Output

Positive Sense

Sense Return

Output common

Positive Output

Positive Sense

Sense Return

Output common

Positive Output

Positive Sense

Sense Return

Output common

Load

28V

Positive Input

Sync In

Sync Out

Input Common

Positive Input

Sync In

Sync Out

Input Common

Figure 9: Paralleling

–

Load

Positive Input

28V

Sync In

Inhbit 1

Input Common

Positive Output

Positive Sense

Inhibit 2

Sense Return

Output Common

MOR

Single

Output

–

Load

Positive Input

28V

Sync In

Inhbit 1

Input Common

Positive Output

Inhibit 2

Output Common

Negative Output

MOR

Dual

Output

Load

Figure 10: tyPiCal ConneCtionS

Sense

Return

260 k

10 k

Figure 8: Share

Crane Aerospace & Electronics Power Solutions

Mor single and dual dc/dc converters

28 Volt input – 120 Watt

www.interpoint.com

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MOR Rev K - 20100422

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