Crane Aerospace & Electronics Power Solutions
MOR Single and Dual DC/DC Converters
28 VOlt input – 120 Watt
P
aralleling
(S
hare
P
in
)
P
oSitiVe
S
enSe
, S
enSe
r
eturn
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.
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.
1
28V
6
4
2
Positive Input
Sync In
Inhbit 1
Positive Output
7
Positive Sense
10
Inhibit 2
12
Sense Return
9
Load
–
+
MOR
Single
Output
Input Common
Output Common
8
1
28V
6
4
2
Positive Input
Sync In
Inhbit 1
MOR
Dual
Output
Positive Output 7
Inhibit 2 12
Output Common 8
Negative Output 9
Load
+
0
Load
–
Input Common
F
igure
10: t
yPiCal
C
onneCtionS
Share
260 k
10 k
F
igure
8: S
hare
Sense
Return
i
nCreaSe
o
utPut
V
oltage by
S
taCking
o
utPutS
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.
1
Positive Input
28V
6 Sync In
5 Sync Out
2
Input Common
Positive Output
7
Positive Sense
10
Share
11
Sense Return 9
Output common
8
1
Positive Input
Positive Output 7
Inhibit 2
Output Common 8
Negative Output 9
Load
+
–
MOR
Dual Output
2
Input Common
1 Positive Input
6 Sync In
5 Sync Out
2
Input Common
Positive Output
7
Positive Sense
10
Share
11
Sense Return 9
Output common
8
+
Load
–
F
igure
11: S
taCked
o
utPutS
– d
ual
m
odel
1 Positive Input
6 Sync In
5 Sync Out
2
Input Common
Positive Output
7
Positive Sense
10
Share
11
9
8
Sense Return
Output common
F
igure
9: P
aralleling
www.interpoint.com
Page 4 of 24
MOR Rev K - 20100422
INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
