Protecting electronics and enabling connectivity

Laird’s ferrite common mode chokes are designed for power and data line EMI filtering where high current, small size, or high-frequency performance is required. Laird has the industry's only true monolithic common mode chokes, able to provide EMI suppression on conductors such as PC board traces (tracks) and high-speed input/output circuitry (including network and storage subsystems).

Modern systems are frequently an interconnection of functional blocks and connections made by cables or wiring harnesses, presenting the opportunity for common mode current loops between devices where EMI can be a challenge. Common mode chokes filter common mode EMI currents without causing signal degradation or de-rating under high currents. Stable common mode chokes allow most signals to pass unaffected, yet filter the noise (EMI) from circuits.

With products in this range including wire-wound power common mode chokes, common mode chip beads, and multi-line arrays, Laird has the solution for your technical challenges.

With Laird’s wireless charging modules, mobile devices can be charged smoothly and quickly without any cable, i.e. no unaesthetic cradles anymore. The core technology is based on the principle of inductive coupling by using a magnetic field. Wireless charging is an environmentally friendly product. It enables intelligent power management which optimises energy consumption, reduces heat dissipation as well as cooling measures, and minimises EMI. At the same time, it optimises charging efficiency/speed and reliability. These products can meet or satisfy popular wireless charging standards or requirements like WPC Qi or PMA.

Conventional ferrite design - conventional flat solid ferrite plates are typically used as the transmitting (TX) module in wireless charging applications, based on magnetic induction technology. For the receiving (RX) device, ultra-thin flexible ferrite sheets are usually preferred, due to weight, size, and shape restrictions.

3D shaped ferrite designs for wearables - TX modules with 3D shaped ferrite discs can significantly improve the charging performance: due to their special shape they concentrate the magnetic flux better, i.e. the transmitted energy is more directed towards the receiver. This increases charging efficiency (= speed) and reliability.