PWM CM

CONTROLLER

0°

180°

PWM CM

CONTROLLER

Input

Common

FEEDBACK ISOLATOR

FEEDBACK ISOLATOR

Output

Common

+ Aux.

Output

–Aux.

Output

Positive

Input

Sync

+5 Output

Positive Input

1

5

28V

Input Common

FMCE-0328

EMI FILTER

Positive Output

Output Common

3

Positive Input

Input Common

MHF+

2

4

Case*

*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.

Chassis Ground

Case Ground

Case Ground

+5

Load

Positive Input

9

7

1

8

2

4

5

28V

Sync In

Inhibit

Input Common

+5 Output

Output Common

– Aux. Output

+ Aux.

Load

3

– Aux.

Load

+ Aux. Output

0.01 µF

5.1k

if the sync terminal (pin 7) is not used, it must be left floating.

The ac coupling shown will prevent sync signal failure.

www.craneae.com/interpoint

Page 4 of 23

Crane Aerospace & Electronics Power Solutions

mHF+ Single, Dual and Triple DC-DC Converters

28 VOlT INPuT – 15 WaTT

MHF+ rev aB - 2014.10.02