SI8273ABD-IM1R

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Isolators provide a simple and reliable solution when the design requires signals to be isolated or reinforced. The SI8273ABD-IM1R is an isolated gate driver from Silicon Labs offering bidirectional signal isolation. This device is designed to drive and isolate low-voltage gate inputs of discrete power switches. It can offer enhanced signal isolation between the input signal and the output signal, which makes it ideal for applications such as those requiring electrical isolation, signal amplification, or system level noise and interference reduction.

The SI8273ABD-IM1R provides industry-leading performance for features such as its integrated transistor gate drivers and a drive voltage of 15V. It operates up to a frequency of 10MHz, providing a wide range of current and voltage ratings. This integrated device enables easy integration into existing power systems and provides a wide temperature range of -40°C to +85°C, making it suitable for various industrial and automotive applications.

The working principle of the SI8273ABD-IM1R is based on two half-bridge drivers connected in series. Connected to the input signals are the two bidirectional isolators, which transfer the signal to the isolated output stage, consisting of two transistor half-bridges. The isolated output of the half-bridges reinforces the signal and amplifies the output current. The isolated output drives the low-voltage gate inputs of power switches with a maximally admissible voltage range of -15V to +15V and a peak output current of 2.5A.

The SI8273ABD-IM1R enables the high voltage power to remain isolated from the controller, allowing for enhanced protection and security against unpredictable environment while still allowing the user to control the systems. Applications where the SI8273ABD-IM1R is suitable for include DC/DC converters, solar inverters, motor controls, and other high-voltage applications such as HVDC power transmission.

The SI8273ABD-IM1R isolator from Silicon Labs provides protection and signal amplification in a feature-packed integrated package. Compact and reliable, it is the ideal choice for high-voltage applications that require signal isolation and signal amplification, and its wide temperature range makes it suitable for a variety of industrial and automotive applications.

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