News: Microelectronics
4 December 2024
ST launches 250W MasterGaN reference design, fast-tracking compact, efficient industrial power supplies
STMicroelectronics of Geneva, Switzerland has launched the EVL250WMG1L resonant-converter reference design based on its MasterGaN1L system-in-package (SiP), as the firm continues to accelerate the design of gallium nitride (GaN) power supplies (PSUs) that deliver superior efficiency and power density.
ST’s MasterGaN SiPs combine GaN power transistors with gate drivers specially optimized to ensure fast and controlled switching. Using these SiPs in place of an equivalent network of discrete components helps to maximize performance and reliability while also accelerating design and saving PCB space, ST says.
The new reference design targets industrial applications where space is limited and efficiency is critical. Combining the MasterGaN1L, which contains two 650V 150mΩ GaN FETs, with ST’s L6599A resonant controller, the PSU achieves peak efficiency of over 94% and operates without heat-sinks on the primary side. Also leveraging ST’s SRK2001A synchronous-rectification controller, the unit has a compact overall footprint of 80mm x 50mm and power density of 34W/inch3.
The PSU can deliver up to 10A output current (equivalent to 250W at 24Vdc) while also having standby current consumption below 1µA, aiding energy saving. Protection features built into the L6599A and SRK2001A ensure resilience against overcurrent, short-circuit and over-voltage, while input-voltage monitoring ensures correct startup and provides under-voltage lockout.
The EVL250WMG1L is available now, fully built and ready for evaluation, for $250.
ST extends MasterGaN performance with new 200W and 500W devices
