SI8274GB4D-IS1

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Isolators - Gate Drivers are components in power electronic systems, typically used for motor control, HVAC, robotics, industrial and home automation, and renewable energy applications. They transfer signals between the high side and low side of a circuit using electromagnetic or mechanical isolation. The SI8274GB4D-IS1 is one such part that combines both isolation and gate driver capabilities in a single package.

The SI8274GB4D-IS1 is comprised of two isolated and regulated gate drivers, each designed to drive one IGBT or MOSFET for half bridge applications. It is rated for an operating voltage of up to 1200 Volts and is designed to provide a current up to 4A. Both legs of the half-bridge circuit are isolated from one another, protecting it against short circuits, transients, and radio frequency interference, while providing high-level isolation performance. The optically-isolated inputs and gate drives allow for low power dissipation and a wide common-mode range.

The IC also integrates a low-power sleep mode, which reduces the power consumption of the circuit to 8uA in static applications. The SI8274GB4D-IS1 also offers an experimental protection feature which shuts down the upper bridge if the fault detection pin is triggered and similar protection for the lower bridge when triggered from a separate local fault.

The SI8274GB4D-IS1 is a low-cost, low-power, and highly integrated isolator and gate driver solution for motor control, HVAC systems, robotics, industrial, home automation, and renewable energy applications. Its high isolation performance, low power consumption, and integrated protection features make it an ideal choice for applications requiring reliable power electronic control.

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