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Page 9 of 14

EMC Considerations

Suggested Schematic for EN55022 Conducted Emission Class A Limits

Recommended Layout with Input Filter

To meet Conducted Emissions EN55022 CLASS A needed the following components:

LANC12xxW12

Component

Value

Voltage

Reference

C1

6.8uF

50V

1210 MLCC

C2, C3

1000pF

2KV

1206 MLCC

LANC24xxW12

Component

Value

Voltage

Reference

C1

4.7uF

50V

1210 MLCC

C2, C3

1000pF

2KV

1206 MLCC

LANC48xxW12

Component

Value

Voltage

Reference

C1

2.2uF

100V

1812 MLCC

C2, C3

1000pF

2KV

1206 MLCC

Figure 11

Figure 12