top of page

Maximising Power Supply Design Efficiency with Elec & Eltek's Common Mode Chokes


Image of Common Mode Chokes from Elec & Eltek

Introduction

Today's power supply designs are more and more complex, requiring components that are capable of handling more power, higher temperatures, and more stringent electromagnetic interference (EMI) standards. Elec & Eltek, a leading provider of power supply components, understands the challenges faced by power supply designers and offers a range of common mode chokes to help maximize power supply design efficiency.


What are Common Mode Chokes?

Common mode chokes are components used in power supply designs to filter out common mode noise and reduce the common-mode voltage or current. Common mode noise is electrical noise that is present in both the positive and negative lines of a power supply and can cause interference with other components in the power supply. Common mode chokes are used to suppress this noise and improve the efficiency of the power supply design.


Common mode chokes are typically made of a ferrite core with a winding of copper wire around it. The ferrite core helps to filter out the noise and the copper wire winding provides the inductance needed to reduce the common-mode voltage or current. Common mode chokes are available in a variety of sizes, shapes, and configurations to meet the needs of different power supply designs.


Common Mode vs Differential Mode

Common mode and differential mode are two types of power supply noise that need to be addressed in power supply designs. Common mode noise is electrical noise that is present in both the positive and negative lines of a power supply, while differential mode noise is electrical noise that is only present in one line of a power supply. Common mode chokes are designed to reduce the common-mode voltage or current, while differential mode chokes are designed to reduce the differential-mode voltage or current.


Introducing Elec & Eltek

They design and manufacture a range of products for industrial and automotive use. They offer 18 THT and 3 SMT standard common mode chokes for power supply designs, suitable for up to 10A rated currents. Custom solutions are available for higher performance or restricted installation space. Their products are used in Networks (LAN/WAN), Telecommunications, Broadband Access, Automotive and other industrial areas and include connectors with integrated transformers, data and telecom transformers, noise filters etc. Elec & Eltek are dedicated to providing innovative solutions and high quality products to meet your needs.


Elec & Eltek offer 18 THT and 3 SMT standard common mode chokes for power supply designs, suitable for up to 10A rated currents. Their products are used in Networks (LAN/WAN), Telecommunications, Broadband Access, Automotive and other industrial areas and include connectors with integrated transformers, data and telecom transformers, noise filters etc.


As well as having access to the standard product family offering 21 derivatives, Elec & Eltek and Ineltek can develop custom solutions to meet your specific requirements; such as high performance or installation within certain physical constraints.


Standard Elec & Eltek Common-Mode-Chokes - Industrial

Elec & Eltek offers 18 THT and 3 SMT products

The DC resistance is in the range of 10mOhm to 2 Ohm

Rated currents up to 10A are available. The inductance of the standard CMCs is between 0.39mH and 20mH

*1 For exact definition, please refer to the data sheet. Duration and frequency are defined differently depending on the area of application


Common-Mode-Chokes - Automotive

In addition to the standard products for industry, several products for the automotive sector are also available. Applications such as on-board chargers in the 3.3 kW or 6.6 kW power class are the focus of Elec & Eltek here. But a CMC solution for 22 kW is also available. Please contact our team for details, since a customized solution is often necessary in this area.


Elec & Eltek products are widely specified for use in applications including Networks (LAN/WAN), Telecommunications, Broadband Access, Automotive and other industrial areas.


Comments


bottom of page