New 80V MXT MOSFET from Magnachip Enhances Power Efficiency in Light Electric Vehicles

Magnachip Semiconductor has introduced the MDLT080N017RH, a new 80V medium-voltage MXT MOSFET housed in a TOLT (TO-Leaded with Top-Side Cooling) package. Designed for compact and thermally demanding environments, this device is engineered to power the next generation of e-mobility and battery-driven systems.

With an RDS(on) of just 1.7 mΩ (Max. @ V_GS = 10V), the MDLT080N017RH delivers exceptional efficiency and low conduction losses. The advanced TOLT package enables superior heat dissipation through top-side cooling, making it an optimal solution for space-constrained and high-performance designs.

The TOLT-packaged MOSFET delivers a major advancement in thermal management. Unlike conventional TOLL (TO-Leadless) packages that dissipate heat through the bottom, the TOLT package is engineered to release heat directly from the top via a mounted metal heat sink. This innovative structure substantially reduces thermal resistance between the junction and the external environment, making it well-suited for thermally demanding applications, such as e-scooters and LEVs.

Simulations and tests conducted by Magnachip demonstrated that our new 80V MV TOLT package solution achieved an average 22% reduction in junction temperature compared to using standard TOLL packages. This improvement not only extends an application’s lifespan, but also enhances the system reliability. Furthermore, the TOLT package enables compact, lightweight application designs thanks to its high power density and efficient thermal flow that does not compromise current-handling capability and thermal safety margins.

“This new 80V MXT MV MOSFET, equipped with the TOLT package, is a testament to Magnachip’s advanced capabilities in high-performance and energy-efficient power semiconductors,” said YJ Kim, CEO of Magnachip. “We remain committed to delivering next-generation solutions that address evolving customer needs to strengthen our position in the global power market.”