STMicroelectronics Introduces Low-Resistance Power MOSFETs to Reduce Power Consumption and Board Space in Power Supply Applications

STMicroelectronics (NYSE: STM), a global semiconductor leader serving customers across the spectrum of electronics applications, has introduced a new series of low on-resistance (RDS(on)) power MOSFETs that achieve optimized conduction losses and compact die dimensions through the new 'Smart STripFET F8' technology. These products are ideal for space-constrained applications such as automotive power distribution and battery management systems.

The first product in this new series, the STL059N4S8AG, is a 40V / 420A N-channel enhancement-mode MOSFET that achieves an on-resistance of 0.59mΩ and is offered in a PowerFLAT 5 x 6 package. The compact packaging reduces board area and simplifies the design of small control modules, while its high thermal conductivity and efficient power consumption meet demanding reliability requirements. Furthermore, the maximum operating temperature of this product has been extended to 175°C. It is provided as an automotive-grade product compliant with AEC-Q101 and adopts a Wettable Flank package that supports automated optical inspection used in automotive assembly processes.

ST's Smart STripFET F8 technology enhances on-state characteristics and size efficiency by improving the trench-gate of the conventional STripFET F8. The newly announced product is ideal for applications where minimizing conduction losses is the key to improving overall efficiency. It is particularly suitable for high-current power distribution and can be effectively combined with STi²Fuse VIPower gate drivers, which feature adjustable circuit interruption, to protect PCB circuit boards, connectors, and wiring. By reducing power consumption in automotive applications, Smart STripFET F8 MOSFETs contribute to extending driving range by efficiently supplying more energy from the battery to the vehicle's electrical system. In Battery Management Systems (BMS), where monitoring, balancing, and protecting battery cell status are key roles, the low on-resistance of the MOSFET improves efficiency during battery charging and discharging.

The automotive-grade STL059N4S8AG is currently in mass production. For pricing and sample availability, please contact ST's sales offices or distributors. The STL075N4S8AG with a current rating of 350A and on-resistance of 0.75mΩ, and the STK035N4S8AG with a current rating of 780A and on-resistance of 0.35mΩ, are scheduled for release in the future.

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About STMicroelectronics ST is a global integrated semiconductor manufacturer with approximately 48,000 employees, a comprehensive supply chain, and state-of-the-art manufacturing facilities. Collaborating with over 200,000 customers and thousands of partner companies, ST works on developing semiconductor solutions and building ecosystems that support customers' business creation and a sustainable society. ST's technologies enable smart mobility, efficient power energy management, and the widespread use of cloud-connected autonomous devices. ST is working toward achieving carbon neutrality in all direct and indirect emissions (Scope 1 and 2), as well as in focus areas of Scope 3 (product transport, employee business travel, and commuting), with plans to achieve 100% renewable energy usage by the end of 2027. For more information, please visit ST's website at http://www.st.com.