PCMF2USB30Z

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Common Mode Chokes are components used to suppress common-mode noise in electronic systems. The PCMF2USB30Z is a high speed differential line transformer designed for use in USB 3.0 applications. It is a two-channel device that provides galvanic isolation and common-mode noise suppression.

PCMF2USB30Z Application Fields

The PCMF2USB30Z is designed for use in USB 3.0 applications, providing high-speed differential-line transmission and galvanic isolation to a wide range of USB 3.0 devices, from hubs to external drives. Its two-channel design supports up to 5Gbps of data transfer rates, with low power dissipation and low coupling capacitance, making it well-suited for low-profile and space-saving designs. It also features a high-impedance common-mode filter, providing enhanced common-mode noise suppression for improved signal performance in applications where noise or interference is a concern.

PCMF2USB30Z Working Principle

The PCMF2USB30Z operates on the same principles as any other common-mode choke. It works by blocking any signal that is traveling in a common-mode, while allowing only signals traveling in a differential-mode to propagate through. This is accomplished by connecting its magnetically shielded center taps together, while connecting one of its two coil ends to ground. This configuration creates a voltage divider between the two coil ends, which effectively blocks any signal that is flowing in a common-mode from being propagated through the device. The resulting common-mode noise suppression helps to reduce EMI interference when transmitting or receiving data along a USB 3.0 link.

In addition to providing common-mode suppression, the PCMF2USB30Z also serves to provide galvanic isolation to help protect the USB 3.0 connections from potential voltage damage due to ground loops and other potential fault conditions. Galvanic isolation is achieved by having the isolated coil windings electrically separate from each other, creating an obstacle for any electrical signals to pass through. Such an isolation layer helps protect connected devices from any unexpected electrical surges and helps ensure reliable communication between two devices.

Conclusion

The PCMF2USB30Z is a two-channel common-mode choke designed for use in USB 3.0 applications. It features a high-impedance filter designed to reduce common-mode noise, making it well-suited for applications where noise is a concern. The device also provides galvanic isolation to help protect the USB 3.0 connections from damage due to ground loops or other electrical fault conditions. It’s an ideal solution for low-profile and space-saving designs, where high-speed data transfer rates and reliable communication are desired.

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