TLF14CB8020R8

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Common Mode Chokes, also known as CM Chokes or CM Filters, are a type of EMI filtering device used to reduce common mode and differential mode interference on power system lines. Common Mode Chokes are generally classified into two types: differential mode chokes (DMC) and single-ended chokes (SEC).

The TLF14CB8020R8 is a StarQuik® Series, high performance common mode choke specifically designed for Resonant and LLC convertor topologies. It is a high common mode current (CMC) choke with a series inductor. This choke can handle high voltage up to 1500V for a wide variety of applications such as computer ATX/SFX power supplies, power adapters, and lighting applications. It also comes with a ferrite core material for high power dissipation, an RoHS compliant epoxy coating, and a variety of core materials to satisfy your system design needs.

The TLF14CB8020R8 common mode choke is a three-terminal device with two terminals labeled "GND" and one terminal labeled "VIN". The GND terminals connect to the power grid and provide the path for common mode noise. The VIN terminal provides the common mode noise path to the load which in the case of a power supply, is the load side (e.g. the back feed) of its power converter. The VIN terminal also provides the path for differential mode noise which is an alternating signal (e.g. on/off) between two circuits. The TLF14CB8020R8 common mode choke effectively reduces both common mode and differential mode noise.

The primary function of common mode choke is to reduce the amount of noise generated and conducted along the common mode lines. This is achieved by creating a low impedance path on the transformer across the power converter. The choke can reduce the common mode noise by up to 40dB and the differential mode noise by up to 18dB over a wide frequency range, from 550Hz to 3KHz. The lowest impedance is achieved when the choke is placed in the closest proximity to grounded AC power lines. The impedance of the choke increases at higher frequencies which helps to filter out high frequency noise. The TLF14CB8020R8 also utilizes a ferrite core material to ensure low power dissipation and high currents.

Common mode chokes are also used in high-voltage power system applications. They can reduce the noise generated and conducted in cables, as well as in transformers and other power equipment. The TLF14CB8020R8 is designed to reduce the amount of common mode and differential mode noise on high-voltage power systems so that they can meet applicable safety standards and codes.

As with many other common mode chokes, the TLF14CB8020R8 offers a wide variety of options for the core material. This allows the user to choose the core material that best suits the particular application needs. This type of choke is also available with various mounting options, such as through-hole, surface-mount, and inline-mount. In addition, the TLF14CB8020R8 is available with either leaded or RoHS compliant epoxy coating for added protection.

In summary, the TLF14CB8020R8 is a high performance common mode choke designed specifically for Resonant and LLC convertor topologies. It is capable of providing a low impedance path across the power converter, while also reducing common mode and differential mode noise. This makes it an ideal choice for high-voltage power system applications. With its wide range of core materials and mounting options, the TLF14CB8020R8 is a highly versatile and reliable EMI filter that can meet the needs of most applications.

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