Semikron Danfoss’ Module with ROHM’s latest 2kV SiC MOSFETs Integrated into SMA’s Large Scale Solar System

Release time:2025-04-29
author:AMEYA360
source:ROHM
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  SMA Solar Technology AG, a leading global specialist in photovoltaic and storage system technology, adopts Semikron Danfoss’ Module with ROHM’s latest 2kV SiC MOSFETs inside its new large scale solar system “Sunny Central FLEX”, a modular platform designed to streamline and enhance grid connections for large-scale photovoltaic installations, battery storage systems, and emerging technologies.

  “ROHM’s new 2kV class SiC MOSFETs are designed to enable simple and highly efficient converter topologies for 1500V DC-links. It is developed with high reliability targets and cosmic radiation robustness – addressing the stringent conditions and extended converter lifetime requirements of the photovoltaic sector and beyond,” says Wolfram Harnack, President at ROHM Semiconductor GmbH. “The technology of our SiC device structure and integrated on-chip gate resistance eases device paralleling and simplifies high power module designs. The mass production has started,” adds Harnack.

  Semikron Danfoss’ SEMITRANS® 20 has designed for high power applications and fast-switching operations, it represents the next generation of power modules for large converters. SEMITRANS® 20 with ROHM’s 2kV SiC MOSFETs is an integral part of SMA’s Sunny Central FLEX. “Semikron Danfoss and ROHM have collaborated for over a decade, focusing primarily on the implementation of silicon carbide (SiC) in power modules. More recently, we have teamed up to integrate silicon IGBTs as well”, says Peter Sontheimer, Senior Vice President of Semikron Danfoss’ Industry division.

  “The new SEMITRANS® 20 offers simple, efficient solutions for 1500VDC applications. These modules are ideal for solar and energy storage inverters. Upcoming high-power electric truck chargers, as well as wind converters, will also benefit,” adds Sontheimer.

  "The cooperation between SMA, Semikron Danfoss and ROHM is proof of how the seamless integration of innovative technologies creates the conditions for future-oriented energy projects," said Bernd Gessner, Product Manager Power Conversion Systems at SMA. "The demands on these solutions are higher than ever. SMA has decades of expertise and fulfills the highest requirements in terms of performance, reliability, durability and flexibility. The fact that Sunny Central FLEX meets these highest future-proof standards is also the result of the excellent cooperation with our partners who share the same commitment to excellence."

Semikron Danfoss’ Module with ROHM’s latest 2kV SiC MOSFETs Integrated into SMA’s Large Scale Solar System

  About SMA Solar Technology AG

        As a leading global specialist in photovoltaic and storage system technology, the SMA Group is setting the standards today for the decentralized and renewable energy supply of tomorrow. SMA’s portfolio contains a wide range of efficient PV and battery inverters, holistic system solutions for PV and battery-storage systems of all power classes, intelligent energy management systems and charging solutions for electric vehicles and power-to-gas applications. Digital energy services as well as extensive services round off SMA’s range. SMA inverters installed throughout the world within the last 20 years with a total output of approximately 144 GW help avoid the emission of more than 64 million tons of CO2. SMA’s multi-award-winning technology is protected by more than 1,600 patents and utility models. Since 2008, the Group’s parent company, SMA Solar Technology AG, has been listed on the Prime Standard of the Frankfurt Stock Exchange (S92) and is listed on the SDAX index.

  About Semikron Danfoss

        Semikron Danfoss is a global technology leader in power electronics. Our product offerings include semiconductor devices, power modules, stacks and systems. In a world that is going electric, Semikron Danfoss technologies are more relevant than ever. With our innovative solutions for automotive, industrial and renewable applications we help the world utilize energy more efficiently and sustainably and thus to significantly reduce overall CO2 emissions – facing one of the biggest challenges today. We take care of our employees and create value for our customers by investing significantly in innovation, technology, capacity and service to deliver best-in-industry performance and for a sustainable future. Semikron Danfoss is a family-owned business, merged by SEMIKRON and Danfoss Silicon Power in 2022. We employ more than 3,500 people in 28 locations across the world. Our global footprint with production sites in Germany, Brazil, China, France, India, Italy, Slovakia and the United States ensures an unmatched service for our customers and partners. We offer more than 90 years of combined expertise in power module packaging, innovation and customer applications – making us the ultimate partner in power electronics.


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ROHM launches wide SOA MOSFET for AI servers in compact 5×6mm package
  ROHM has developed the 100V power MOSFET - RS7P200BM - achieving industry-leading SOA in a 5060-size (5.0mm × 6.0mm) package. This product is ideal for hot-swap circuits in AI servers using 48V power supplies as well as for industrial power supplies requiring battery protection.  The rapid evolution and widespread adoption of AI technologies have increased the demand for stable operation and improved power efficiency in servers equipped with generative AI and high-performance GPUs. Particularly in hot-swap circuits, power MOSFETs with wide SOA are essential to handle inrush current and overload conditions, ensuring stable operation. Furthermore, within data centers and AI servers, the transition towards 48V power supplies, which offer superior power conversion efficiency, is progressing against a backdrop of energy conservation. This necessitates the development of high-voltage, high-efficiency power supply circuits capable of meeting these demands.  Therefore, ROHM has expanded its line-up of 100V power MOSFETs ideal for hot-swap circuits in AI servers to meet market demand. The new RS7P200BM adopts a compact DFN5060-8S (5060 size) package, enabling even higher density mounting compared to the AI server power MOSFET ‘RY7P250BM’ in the DFN8080-8S (8.0mm × 8.0mm size) package, which ROHM has released in May 2025.  The new product achieves a low on-resistance (RDS(on)) of 4.0mΩ (conditions: VGS=10V, ID=50A, Ta=25°C) while maintaining wide SOA of 7.5A at a pulse width of 10ms and 25A at 1ms under operating conditions of VDS=48V. This balance of low on-resistance and wide SOA, typically a trade-off relationship, helps suppress heat generation during operation, thereby improving server power supply efficiency, reducing cooling load, and lowering electricity costs.  Mass production of the new product began in September 2025 (sample price: $5.5/unit, excluding tax).  ROHM will continue to expand its product lineup for 48V power supplies, which are increasingly adopted in applications such as AI servers. By providing highly efficient and reliable solutions, we will contribute to reducing power loss and cooling loads in data centers, as well as enhancing the high reliability and energy efficiency of server systems.  Application Examples  •48V system AI servers and data center power hot-swap circuits  •48V system industrial power supplies (forklifts, power tools, robots, fan motors, etc.)  •Battery-powered industrial equipment such as AGVs (Automated Guided Vehicles)  •UPS, emergency power systems (battery backup units)  EcoMOS™ Brand  EcoMOS™ is ROHM's brand of silicon power MOSFETs designed for energy-efficient applications in the power device sector. Widely utilized in applications such as home appliances, industrial equipment, and automotive systems, EcoMOS™ provides a diverse lineup that enables product selection based on key parameters such as noise performance and switching characteristics to meet specific requirements.  ・EcoMOS™ is a trademark or registered trademark of ROHM Co., Ltd.  Terminology  SOA(Safe Operating Area)  The voltage and current range within which a device can operate safely without damage. Operation beyond this safe operating area may cause thermal runaway or damage; therefore, consideration of the SOA is essential, particularly in applications where inrush current or overcurrent may occur.  Hot-swap circuit  The complete circuitry supports the hot-swap function, which enables the removal or insertion of components while the device's power supply remains active. Comprising MOSFETs, protective elements, and connectors, it suppresses inrush currents occurring during component insertion and provides overcurrent protection, thereby ensuring the safe operation of the system and connected components.  Inrush Current  The high current exceeds the rated current value that flows momentarily when switching on electronic equipment. Controlling this prevents damage to devices and stabilizes the system by reducing the load on components within the power supply circuit.  On-resistance(RDS(on))  The resistance value between the drain and source terminals when the MOSFET is in operation (on). The lower the value, the less power loss occurs during operation.
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