Evaluation Board Multiple Line Filter

Characteristics

Printed circuit board for evaluation of different EMC-filters
To evaluate and select different filter components for the best possible common and differential mode attenuation for your application.
Multi land pattern for different common mode choke sizes
Two possibilities to connect ground
Overvoltage protection by fuse and varistor
THT (Through Hole Technology) mounting

Components are not included!

Applications

Line filter with good suitability even for unknown source and sink impedances
Suppression of conducted interferences caused, for example, by switch mode power supplies
AC Mains Applications until 250 V

Important information: This is an evaluation board. The board should not be installed in the final application.

Application Notes

ANP015 Line filter – The last barrier in the switch mode power supply
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Find filter solutions quickly and cost-effectively with the

Evaluation Board

This PCB offers a fast and cost-effective means of building up the filter design with various components. It allows for the examination of the filter circuit's performance in relation to the desired filtering effect, facilitating the seamless integration of the chosen filter circuit into the application. This can reduce development time and the associated costs.

The evaluation board can be used as a supplement to the Design Your EMC-Filter Design Kit or independently with the components shown in the adjacent figure and below.

Go to Design Kit

Common and differential mode attenuation

LC filter for common mode suppression

The Common Mode Choke (CMC) and the Y-Capacitors (C_Y1, C_Y2) build a low-pass for high frequency common mode interferences. While Y-Capacitors divert high-frequency interference towards ground, it is attenuated by the common mode choke due to the high common mode impedance.

Pi filter for differential mode suppression

In this circuit, the X-Capacitors (C_X1 and C_X2) and the Leakage Inductance (L_Leak) of the Common Mode Choke built a low-pass filter. The high frequency interference is filtered while the supply current, which typically has a much lower frequency (50 - 60 Hz), remains almost unaffected.