EAP-20-222-D

Power line filter modules are vital components of electronic equipment, allowing their circuits to work correctly. One such module is the EAP-20-222-D—a two-stage common mode EMI filter with ESD protection. This module has a so-called “open drain” structure that provides fast, dependable attenuation of common mode noise from power line transients, making it well suited for industrial, medical and automotive applications.

The EAP-20-222-D integrates two technologies—EMI filters and common mode filters—into one module. First, it actively attenuates conducted common mode transients or surges. Second, it provides ESD protection. Both of these benefits allow circuitry downstream to operate reliably.

The common mode filter used in the EAP-20-222-D consists of a classical EMI filter made up of a set of common mode inductors and capacitors. It “sees” the differential mode (DM) noise and common mode (CM) transients, and efficiently filters them out. The inductors help absorb the high frequency noise and the capacitors help absorb the low frequency transients or surges. This unique combination of components provides an extremely effective noise attenuation solution for DC or AC power systems.

In addition, the EAP-20-222-D features an ESD protection circuit that provides robust protection against voltage transients in the 12V to 24V range. This circuit consists of a silicon diode array that absorbs voltage surges, dissipating them as heat. This prevents the surge from damaging the sensitive components in the circuitry downstream.

The design of the EAP-20-222-D was carefully optimized for different configurations, depending on the application. EMI filters can be “tuned” to have a wide range of responses, making them highly suitable for specific applications. For example, the EAP-20-222-D can be easily configured with different component values to attenuate anything from radio frequencies to low frequency surge transients.

Overall, the EAP-20-222-D is an extremely versatile power line filter module, capable of providing noise attenuation and ESD protection for a wide selection of applications, from industrial to medical to automotive. Its clever design and wide configuration options make it an ideal choice for those in need of a truly effective power line filter module.