ISO7720FQDRQ1

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Digital isolators, also known as optocouplers, are used to create a barrier between two circuits so that one side is electrically and magnetically isolated from the other. This kind of isolation provides not only basic safety against high-voltage electric shock, but also robust electromagnetic compatibility (EMC) for both hardware and software. The ISO7720FQDRQ1 by Texas Instruments is one of the newest digital isolators in the market and is fast becoming a popular solution for many applications. This article will discuss the application field of the ISO7720FQDRQ1 and the working principle that makes it so effective.

The ISO7720FQDRQ1 is a fully-proportional, low power, and non-volatile digital isolator that offers a 10 Mbps data rate. This device uses infrared light transceiver technology to provide the electrical isolation. The device includes a transmitter that uses an LED to transmit light onto the receiver, which then converts the light into an electrical signal. This isolation prevents power surges, ESD, and transient voltage from passing into the system.

The ISO7720FQDRQ1 is designed for use in industrial applications, such as power supplies and motor controllers, as well as for use in consumer electronics. The device can be used for signal, current, and power isolation. This isolator offers both galvanic isolation and common mode voltage transformation, which provides excellent RF immunity.

In power supplies, the ISO7720FQDRQ1 enables signal transmission between the primary and secondary side without ground loops. This can help to reduce electromagnetic interference (EMI) and reduce thermal load in the device. In motor controllers, the device can provide for signal transmission between the motor drive and the control shield, allowing the system to operate under high voltage without excessive heat generation. In consumer electronics, the device can be used to provide power isolation between the low-voltage system and the high voltage system, reducing EMI from the high-voltage side.

The working principle of the ISO7720FQDRQ1 is based on the transformation of data between the two circuits with infrared light. An LED sheds light onto a photodiode, which converts the light into an electric signal. The signal is then transmitted through an optically-coupled transistor, providing complete isolation between the two sides. This isolation can help to protect both hardware and software from power surges, electrostatic discharge, and transients.

The ISO7720FQDRQ1 is a reliable and low power solution for digital isolation that can be used in a variety of applications. The device provides excellent protection against EMI and power surge, and can help to reduce thermal load in power supplies and motor controllers. Its ability to provide complete electrical isolation using infrared light provides robust EMC in both hardware and software.

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