Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
CONNECTION DIAGRAMS
MHF+ Triple
POSITIVE INPUT
9
10 k
1N4148
INHIBIT
200 pF
1
2N3501
10 K
8
3.9 K
INPUT
COMMON
FIGURE 5: INHIBIT INTERFACE
9
2
4
+5 Output
Positive Input
Sync In
0.01
5.1k
F
+5
Load
7
1
+ Aux. Output
+ Aux.
Load
28V
3
5
Inhibit
Output Common
– Aux. Output
– Aux.
Load
8
Input Common
If the sync terminal ([pin 7) is not used, it must be left floating.
The ac coupling shown will prevent sync signal failure.
FIGURE 6: AC COUPLING OF SYNC SIGNAL
1
5
2
4
9
8
Positive Output
Positive Input
Positive Input
FMH-461
EMI FILTER
28V
MHF+ TRIPLE
Input Common
Input Common
Output Common
3
6
Case*
Chassis Ground
*The case ground connection should be as low an impedance as possible to minimize EMI.
Direct contact of baseplate to chassis ground provides the lowest impedance.
FIGURE 7: EMI FILTER CONNECTION
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Rev K - 20060613
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