CDRR105NP-220MC

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Fixed inductors are components designed with the purpose of restricting the flow of electric current while providing magnetic fields with minimal resistance. The CDRR105NP-220MC is a specific type of fixed inductor from KEMET Electronics that offers increased current carrying capacity and low losses at high frequencies. In this article, we will look at the application field and working principle of this device.

Application Field

The CDRR105NP-220MC is commonly used as an inductor in power supply designs, such as in cell phones, computers and other electronic equipment, and is rated for a maximum operating temperature of +100°C. With a saturation current of 9.05A and a maximum operating frequency of 6.0MHz, it provides high current carrying capacity and low losses during high frequency operation.

The CDRR105NP-220MC is also used in switching power supplies, both for DC-DC conversion and noise suppression. It is able to provide significantly lower losses and increased efficiency over traditional ferrite core switching power supplies. It is also commonly used as a common-mode noise filter in audio-visual systems.

Working Principle

The CDRR105NP-220MC consists of an enameled wire winded around a ferrite core, and the direction of the winding is determined by the magnetic field of the energizing circuit. The coil creates a magnetic field when current passes through, which helps to restrict further current flow. The magnetic field is sufficient to quickly reduce current flow and provide a relatively low-resistance path for part of the current.

The ferrite core ensures a much higher saturation current compared to traditional cores, and the combination of the wire windings and the ferrite core create a strong inductance effect that is able to reduce voltage spikes and reduce energy losses in the system, as it stores the energy in the core during power conversion. As the frequency increases, the coil inductance also increases, which increases energy efficiency.

The CDRR105NP-220MC can also be used in a reverse current mode, where a reverse current is passed through the core in order to reduce the magnetic field generated by the core. This can be useful for reducing noise and eliminating interference in audio-visual systems.

Conclusion

The CDRR105NP-220MC is a fixed inductor from KEMET Electronics that offers increased current carrying capacity and low losses at high frequencies. It is commonly used as an inductor in power supply designs, switching power supplies, and in audio-visual systems as a common-mode noise filter. It works be creating a magnetic field when current passes through, which helps to restrict further current flow and reduce energy losses in the system.

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