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Typical Connection

The diagram above illustrates a typical connection of the MA600ERUI series

for applications that require meeting EMC standards. The units do not require

external components to operate as specified. Some notes on this diagram

(starting with the input circuit) are:

1. It is recommended that an external fuse be used.The recommended fuse is

shown in the model chart on page 2.

2. An external MOV is recommended on the input to protect the unit in the event

of a surge. A recommended value is given in the table at right.

3. An external TVS is recommended on the input to protect the unit in the event

of a voltage spike. A recommended value is given in the table at right.

must be taken in choosing this capacitor not to exceed the capacitive load

specification for the unit. Voltage derating of capacitors should be 80% or

above.

5. Recommended values for components are:

Component

MOV

S14K35

S14K60

LDM

56 µH

56 µH

TVS

SMCJ48A

SMCJ90A

330 µF/50V

330 µF/100V

2.2 µF/50V

2.2 µF/100V

LCM

2.2 mH

2.2 mH

10 µF

10 µF

6. The drawing below shows a suggested board layout for the

low ESR resistance electrolytic capacitor. Care must be taken

in choosing this capacitor not to exceed the capacitive load

specification for the unit.

7. In many applications simply adding input/output capaci-

tors will enhance the input surge protection and reduce

output ripple sufficiently. Typically, the value of the input

capacitor should be > 330 µF. The output capacitor

would be 10 µF.

Input noise and surge suppression modules are available for a number

of MPD DC/DC power supplies. An MA600ERUI connection with the

DCFM-02 (noise suppression) module connected to the input is

shown below.

0 µF/50V for 24 VDC

input models and 330 µF/100V for 48 VDC input units. The

output capacitor would be 10 µF.

For pricing or full technical information on these modules (DCFM-01,

DCFM-02 and DCFM-03) please contact the factory.