SI8273AB-IS1R

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The SI8273AB-IS1R Isolator is a full bridge gate driver for isolator applications that combines a control data interface, driver ICs and a fault latch in one chip. The device provides high level of efficiency by providing isolation between control data and power output, making the system reliable for various industrial and automotive applications.

The SI8273AB-IS1R offers various features such as a wide operating range from 6V to 50V DC voltage, high switching capability up to 5A, 0.25V gate threshold and up to 18V drive voltage with a typical current-limiting resistance of 1.5Ω. It also supports a 9V to 55V bus power supply for excellent performance. All of these features allow the SI8273AB-IS1R to be used in applications like DC/DC converter, solar inverters, uninterruptible power supplies and motor drive. Moreover, it features an integrated high-side drivers and low-side drivers that can provide faster switching speed, better current sensing and enhanced safety for applications.

The working principle of the SI8273AB-IS1R Isolator is based on isolated power supply operation. The device has an integrated power interface, that consists of two isolated channels which are connected to the main power supply. One of the channels is used for connecting the main power supply to the isolation converter, and the other is used to provide the power supply for the control circuit. The converter then processes the power supply to provide the required voltage level for the system.

Furthermore, the device supports isolation fault protection to automatically detect short circuit or overcurrent issues. It also features protection from dead-time connection and reverse connection. These features further enhance the safety of the system. Additionally, the integrated gate driver eliminates the need for external gate driver ICs, thus eliminating the need for extra board space and cost. Furthermore, the SI8273AB-IS1R has an adjustable integrated dead-time to provide maximum flexibility in system design.

In summary, the SI8273AB-IS1R Isolator from Silicon Labs is an advanced gate driver designed for isolator applications. It features an integrated power interface, 0.25V gate threshold, integrated H-bridge drivers, voltage range of 6V to 50V DC, integrated safety features and adjustable integrated dead-time. It is an ideal solution for applications such as DC/DC converters, solar inverters, uninterruptible power supplies and motor drives.

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