ISO7761FDBQ

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Digital isolators are devices used to protect components from electrical disturbances in on-site environments. They are indicative for applications such as factory automation, automotive, heavy-duty industrial equipment, and control of multiple systems. These devices help protect against over voltage transients on system components, as well as high frequency interference. The ISO7661FDBQ is one such device.

The ISO7661FDBQ application field focuses on separated data transmission. It is suitable for industrial Ethernet applications, automotive applications, and medical applications. The device provides galvanic isolation and has a conceptually-independent signal transmission, allowing for reliable data protection of both ends. It is designed to be integrated into system architectures in areas like motor control, industrial motor drives, and various other industrial application.

The ISO7661FDBQ is based on the output-platform-centric design of Input-Output Isolator with PWM Technology (IOIP). The isolation platform consists of two integrated circuits: an input and output isolator. The output side is based on Pulse Width Modulation (PWM) technology. The input side uses differential receivers to provide input isolation, while the output side supports outputs with adjustable delay and over-temperature protection. The output circuit includes a power-over-Ethernet power supply, allowing it to draw up to 10 watts from the system and a low-noise 1.2V linear regulator to provide a clean, consistent operating voltage.

The three-stage output channel on the ISO7661FDBQ isolator is designed to be able to handle output signals from up to 200A of current to 400V of voltage. The advantages of this arrangement are its ability to provide a proportional output for each signal, not being adversely affected by EMI, and to protect against malfunctions due to the resulting inrush current. The unit also supports a variety of signal types other than the traditional voltage and current without compromising safety.

The ISO7661FDBQ working principle is based on the use of a spacer layer between the input and the output circuits which acts as an isolator. This spatial isolator is made up of composite insulation materials which greatly reduce unwanted electrical hazards from reaching the input and output circuits without altering the original signal. This layer also provides for the enhanced protection as it eliminates common-mode current flow, eliminates potential difference between the input and output, and reduces hazardous transients.

In summary, the ISO7661FDBQ digital isolator is a useful tool for both protecting sensitive components and increasing the reliability of data transmission in various industries. With its integrated power supply, adjustable delay, and over-temperature protection, it is ideal for a range of applications including motor control, factory automation, and medical applications. Moreover, its three-stage output channel is designed for heavy-duty industrial applications and can handle the high demands of various signal types. With the use of a composite insulation layer, the ISO7661FDBQ isolator ensures efficient electrical safety standards and complies with international EMC standards. Therefore, it is a great asset for any system architecture.

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