Infineon’s new industrial and automotive grade devices

21st July 2023

Sheryl Miles

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In static switching applications, power designs focus on minimising conduction losses, optimising thermal behaviour, and achieving compact and lightweight systems while ensuring high quality at a low cost.

To meet the needs of next-generation solutions, Infineon Technologies is expanding its CoolMOS S7 family of high-voltage superjunction (SJ) MOSFETs. The devices are aiming at SMPS, solar energy systems, battery protection, solid-state relays (SSR), motor-starters, and solid-state circuit breakers, as well as PLCs, lighting control, HV eFuse/eDisconnect, (H)EV on-board chargers.

The portfolio extension includes innovative QDPAK top-side cooling (TSC) packages and offers a wide range of features in a small footprint. This makes it highly advantageous for low-frequency switching applications while optimising cost positioning. Thanks to the novel high-power QDPAK packaging, they offer an R DS(on) of only 10mΩ, which is the lowest on the market in this voltage class and the lowest in SMD packages. By minimising conduction losses of the MOSFETs, the CoolMOS S7/S7A solutions contribute to higher overall efficiency and provide an easy and cost-optimised way to improve system performance.

The CoolMOS S7 power switches also effectively manage heat dissipation with improved thermal resistance. Thanks to the innovative and efficient QDPAK packaging, they also reduce or even eliminate the need for heat sinks in solid-state designs, resulting in more compact and lighter systems. The MOSFETs are available in both top-side and bottom-side variants, and feature high-pulse current capability, enabling them to handle sudden surges of current. In addition, they exhibit body diode robustness to ensure reliable operation during AC line commutation.

With fewer components required, they reduce part count, resulting in flexible system integration, lower BOM costs, and total cost of ownership (TCO). In addition, these MOSFETs enable shorter reaction times, particularly when breaking a current, facilitating smoother and more efficient operation.

Availability

The new 600V industrial grade CoolMOS S7 and automotive grade CoolMOS S7A SJ MOSFETs for static switching are available in both top-side (TSC) and bottom-side cooling (BSC) QDPAK (PG-HDSOP-22) variants and can be ordered now.