F3480T009

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Power Line Filter Modules are important components for electronic and electrical systems, providing the necessary filtering that reduces the amount of interference created in the power lines. The F3480T009 is an example of a Power Line Filter Module that provides differential and common mode filtering over a wide frequency range. To understand the application field and working principle of this device, the following aspects need to be considered.

Application Field

The F3480T009 is suitable for applications in power lines that require high quality differential and common mode filtering. The module covers frequencies from 10Hz to 50kHz with an insertion loss better than 0.2 dB @50kHz and maximum insertion loss of 1 dB @ 10kHz. This makes it suitable for applications in devices such as AC/DC power adapters, microwaves, home appliances, air conditioners, motor speed controllers, converter drives, and digital and analog signal circuits.

Working Principle

The F3480T009 Power Line Filter Module comprises of a differential and common mode filter which together provide effective differential and common mode current suppression over a wide frequency range. The differential mode filter is constructed from a network of inductor and capacitor coils, while the common mode filter consists of a coil and two capacitors. The inductors act as band-stop filters while the capacitors act as high pass filters. Together they ensure that the frequency range required is effectively filtered.

The F3480T009 module also has an EMI transformer and bypass to protect against high frequency, high voltage transients. The transformer will limit differential mode current to safely pass through the device, while the bypass limits the common mode current. The F3480T009 module also includes a Zobel network which further reduces the differential mode current.

The module also provides spike protection, with a wide range of active input surge (spike) protection. It is recommended to use varying ranges of active boost and zero voltage switching to protect the power lines from high voltage transient spikes. The device also features a temperature range of -40°C to 70°C, a hold current of 8A, and an Ipeak current of 17A.

Conclusion

The F3480T009 Power Line Filter Module provides differential and common mode filtering over a wide frequency range, and is suitable for applications in products such as AC/DC power adapters, microwaves, home appliances, air conditioners, motor speed controllers, converter drives, and digital and analog signal circuits. The module also includes an EMI transformer, bypass, and a Zobel network, offering effective protection against high frequency transients, as well as spike protection and a range of active input surge protection.

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