ISO7140FCCDBQR Isolators

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Digital Isolators are typically used to protect, isolate, and reduce cross-talk in digital applications. The ISO7140FCCDBQR is a popular digital isolator that is often used in a variety of applications. In this article, we will discuss the application field and working principle of the ISO7140FCCDBQR in more detail.

Application Field and Working Principle

The ISO7140FCCDBQR is an ideal digital isolator for applications requiring protection from high voltage and surge currents and pliant with the most important safety requirements such as IEC 61000-4-5 and IEC 60950. Its isolation voltage is up to 25kV BIFET based, making it suitable for several applications, including automotive, industrial, medical, and military.

The ISO7140FCCDBQR is a bidirectional, full-wave asymmetrical, active-clamp isolator, which provides a high degree of isolation between two points. It is designed with an internal forward-body diode circuit, allowing it to handle negative to positive and positive to negative (reverse-polarity) voltages. The device consists of two sections – the drain-source isolation and the primary side isolation. The drain-source isolation consists of two devices that are connected together to form a single conductive path. The devices are connected in series, with one being a buffer and the other a protection device. The primary side isolation section consists of two back-to-back N-MOSFET devices and two capacitors connected in parallel to the two MOSFETs.

The ISO7140FCCDBQR works by converting a high voltage input signal into a low voltage output signal. The device is able to handle up to 10kV of voltage without any resulting damage. The device also includes ESD protection for the input and output. The output signal is then isolated from the primary side, providing a level of isolation which enables it to be used in applications where noise and interference are a concern. The device also features a built-in latch-up protection, preventing circuit destruction should the primary side suffer from an overvoltage. This feature makes it ideal for use in applications that require noise and interference protection, such as automotive, industrial, medical, and other sensitive applications.

To sum up, the ISO7140FCCDBQR is a versatile digital isolator suitable for a variety of applications. It features a high level of isolation, low voltage output, ESD protection, and latch-up protection, making it ideal for applications that require noise and interference protection. Its bidirectional, full-wave asymmetrical, active-clamp isolator technology makes it suitable for a variety of applications, including automotive, industrial, medical, and military.

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