UCC21520QDWQ1

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The UCC21520QDWQ1 device is an isolator, specifically falling into the category of gate drivers. It delivers a bridge between non-isolated and isolated gate drivers, allowing for circuit isolation and protection elements to be employed. The device is capable of 5A peak source and sink drive as well its providing safety isolation of 300Vrms for robust system solutions.

The application field of this device is mainly in isolated power supplies for motor elements as well as for the sort of applications that require some level of interface between two discrete devices. This could range from an MPPT (Maximum Power Point Tracking) strategy to an HVAC (Heating, Ventilation, and Air Conditioning) system. Additionally, the device is suited for server power supplies, distributed power systems, AC power supplies, street lighting systems, healthcare applications, and industrial systems.

The overall working principle of this device is such that it generates a high and low side driver with isolated gate signals from its input. It provides noise immunity through the isolation feature and can handle a peak 5A of gate drive current. Additionally, the device features latch off protection of the power device at certain fault conditions and is self-powered by the input voltage. The design of the device allows for a discrete solution, allowing for the integration of safety functions into the user’s application.

The UCC21520QDWQ1 device employs a unique isolation technology, called Compound Secondary Technology, which allows a secondary gate driver circuit to be powered by the isolated voltage. This technology achieves robust isolation of up to 300Vrms and can also provide a number of benefits, such as a minimum isolation capacitance, low leakage current, low skin effect, and a low signal-to-noise ratio.

Overall, the UCC21520QDWQ1 device provides an isolator, specifically a gate driver, which provides an interface between two separate systems. It’s application field lies in motor elements, HVAC systems, server power supplies, and industrial systems, just to name a few. The device achieves robust isolation of up to 300Vrms and provides a peak 5A drive current, latch-off protection, and noise immunity. This is made possible by the device’s Compound Secondary Technology, which allows the device to be powered by the isolated voltage.

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