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Typical Connection

For applications that require meeting EMC standards,the diagram above

illustrates a typical connection of the MD600xRWI series. The units

do not require external components to operate as specified.Some notes

on this diagram (starting with the input circuit) are:

1. An external fuse should be used in all power module applications.

The recommended fuse is shown in the model chart on page 2.

2. To protect against a surge, an external MOV is recommended on the

input. For a suggested value, contact the factory.

3. To protect against voltage spikes, it is recommended that a TVS be

used on the input. For a suggested value, contact the factory.

4. The filtering components shown are needed to meet the conducted

emissions requirements for EN 55022 ClassA.All components should

be mounted as close to the converter as possible.

5. Recommended values for components are:

Component

220 µF/25V

22 µF/25V

10 µF/50V

10 µF/50V

2.2 µF/100V

10 µH

10 µH

10 µH

15 µH

22 µF/25V

10 µF/50V

10 µF/50V

2.2 µF/100V

220 pF/3 kV

220 pF/3 kV

220 pF/3 kV

220 pF/3 kV

220 pF/3 kV

220 pF/3 kV

220 pF/3 kV

220 pF/3 kV

10 µF - 22 µF

6. To meet the requirements of EN 61000-4-4 and EN 61000-4-5,an external input capacitor

is required for all models.The suggested value is 330 µF/100V. Contact the factory

for more information

resistance electrolytic capacitor. Care 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

8. The drawings below show typical board layouts for the EMI

circuit shown above (one for single output models and one

for dual output units).

9. In many applications simply adding input/output

capacitors will enhance the input surge protection

and reduce output ripple sufficiently. The value of

the input capacitor can range from 220 µF to 330 µF,

depending on the needs of the application. The output

capacitor would typically be 10 µF.