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Infineon OptiMOS 7 series of MOSFETs for Automotive Applications

Jun 07 2023

Infineon introduces the latest generation of MOSFETs for automotive applications with improved on-resistance, improved switching efficiency and design robustness.

The OptiMOS 7 40V family is available in a variety of leadless, rugged automotive-grade power packages, including TDSON-8, HSOF-5, HSOF-8 and top-side cooled packages. As a new generation of power MOSFETs for automotive applications, this series uses 300mm thin wafer technology and innovative packaging, which has significant performance advantages compared to other devices in tiny packages.

OptiMOS 7 series of MOSFET package

Source: Infineon

In addition to the compact form factor, this series adopts leading technology in performance and improves system efficiency. It will set new benchmarks in power density, current capability and chip durability. The OptiMOS family reduces switching losses and improves safe operating area (SOA) robustness and avalanche current capability. This facilitates the design of future high-efficiency automotive applications, especially providing excellent efficiency and power in a compact design. In addition, it improves cooling and reduces system cost.

Axel Hahn, Senior Vice President of the Automotive MOSFET Product Line at Infineon Technologies, said: These semiconductor devices offer outstanding power density and energy efficiency while offering the industry's lowest on-resistance.

The OptiMOS 7 series is ideal for future automotive 40V MOSFET applications including electric power steering, braking systems, disconnect switches and new domain architectures. Its applications also include battery management, electronic fuse boxes, and DC-DC and BLDC drivers.

Features of OptiMOS 7 40V

Leading Technology for Drives + Power Distribution + Power Conversion

▪ Highest Avalanche capability ever in a Trench FET

▪ Lowest Ron in portfolio available

▪ Small Qg for higher efficiency and less switching losses

Highest Avalanche Current Rating + Lowest RDSON Perfect Fit for Safety Switches and Power Distribution

▪ Highest avalanche current rating in portfolio (also at same RDSON)

▪ Perfect fit for Safety Switches / Power Distribution applications

▪ Easy replacement for OptiMOSTM5 & 6

▪ More compact design for Power Distribution ECUs

▪ Low deviation in VGSTH –low parameter spread (good for MOSFET paralleling)

With 25% better SOA ruggedness Perfect Fit for Power Distribution & Safety Switches

▪ Average 25% and up to 35% SOA improvement vs. OptiMOSTM 6

▪ Perfect fit to reduce steady on losses or enable higher currents

Low Gate Charge for high Frequency Switching Perfect Fit for efficient Drives and Power Conversion

▪ Small gate charge for lowest gate drive currents

▪ Optimized for current source gate drivers with low Rg

With optimized Turn On / Off Switching Perfect Fit for efficient Drives and Power Conversion

Up to 20% faster switching times

▪ Enables higher frequency for DCDCs

▪ Higher duty cycle by achieving lower deadtimes


Infineon is a global semiconductor leader in power systems and the Internet of Things. Its automotive OptiMOS family offers benchmark quality in the 20V-300V range, in a wide variety of packages and as low as 0.55mΩ on-resistance. In automotive applications, Infineon MOSFETs are mainly used in body electronics, powertrain, chassis and safety, automotive safety, electric drive systems, and infotainment systems.

The brand-new OptiMOS 7 series products adopt leading technology and have greatly improved performance. With these devices, designers can easily design high-quality products and applications. The OptiMOS 40V series is already in production, with the first units available to order from August 2023.


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