Monday, July 15, 2024

STMicroelectronics Announces New 45W and 150W MasterGaN Devices

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STMicroelectronics introduces 5W and 150W MasterGaN devices for high-efficiency power conversion.

Due to apparent advantages of wide-bandgap semiconductors in power electronics, industries are migrating from silicon MOSFETs towards power converters implemented by wide-bandgap semiconductors for more compact form-factor, high energy density, high current and voltage ratings, and high efficiency.

To help in this transitioning to high-efficiency wide-bandgap technology, STMicroelectronics announces the release of MasterGaN3 and MasterGaN5 integrated power packages for applications up to 45W and 150W, respectively.

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The addition of these packages gives the designers flexibility to choose among the optimum Gallium Nitride (GaN) device and driver solution when designing power electronic devices such as switched-mode power supplies, chargers, adapters, high-voltage Power-Factor Correction (PFC), and DC/DC converters.

The devices integrate two 650V power transistors with optimized high-voltage gate drivers and associated safety and protection circuitry, eliminating gate-driver and circuit-layout design challenges. Moreover, in the GaN power transistors of MasterGaN3 devices have asymmetrical on-resistance (Rds(on)) of 225mΩ and 450mΩ, making these devices suited to soft-switching and active-rectification converters. In MasterGaN5 both transistors have 450mΩ Rds(on) for use in topologies such as LLC-resonant and Active Clamp Flyback.

The MasterGaN devices are compatible with logic signals from 3.3V to 15V, which simplifies connection of a host DSP, FPGA, or microcontroller, and external devices such as Hall sensors. They also feature protection including low-side and high-side under-voltage lockout (UVLO), gate-driver interlocks, over-temperature protection, and a shutdown pin.

The devices are housed in a 9mm x 9mm GQFN package optimized for high-voltage applications with 2mm creepage distance between high-voltage and low-voltage pads. 

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