Power Semiconductors Weekly Vol. 113

Alpha and Omega Semiconductor Releases 600V 50mohm αMOS7™ Super Junction MOSFETs Family

Alpha and Omega Semiconductor Limited (AOS) announced the release of 600V αMOS7™ Super Junction MOSFETs Family. αMOS7™ is AOS’ next generation high voltage MOSFET, designed to meet the high efficiency and high-density needs of servers, workstations, telecom rectifiers, solar Inverters, EV charging, motor drives and industrial power applications.

Today’s Server power supply requires Titanium efficiency, which translates to more than 98.5% peak efficiency on both PFC and LLC stages. Active-Bridges and Bridgeless designs are easy-to-implement solutions; however, switching and driving losses, especially at light load, are still the main problems designers face. Existing technologies limited by large cell pitches and charges could hardly meet such requirements.

Next-gen SJ technologies with reduced charge but also enough robustness is in demand. Low Qrr and Trr for LLC and PSFB applications are also a must during transient and abnormal situations. AOS αMOS7™ High Voltage SJ MOSFET is the best answer for above needs.

For Solar applications, low ohmic SMD devices are becoming the new standards, aiming for reduced form factors through utilizing 3D mechanical and thermal designs. αMOS7™ provides a wide Rdson granularity and SMD package choices, such as DFN, TOLL, and Top-cooling variants.

For low Fsw applications such as Solid-State Relays or Active Bridges, FETs must meet specific SOA requirements to sustain surge and in-rush currents. αMOS7™ ensures low Rdson’s temperature coefficient and ruggedness for transient voltage and current overstresses.

The first product released – AOK050V60A7 is a 600V 50mOhm αMOS7 low ohmic device with the industry-standard TO-247 package tailored for today’s high-power AC/DC, DC/DC, and Solar Inverter stages. As the EU ERP Lot9 regulation pushes the efficiency of single PSUs to Titanium level, AOS αMOS7™ 600V low ohmic family provides an ideal solution for single, interleaved, dual boost, totem-pole, and Vienna PFCs, as well as other hard-switching topologies. The optimized capacitance of AOK050V60A7 will provide customers excellent switching performances, with fast turn-on/turn-off behaviors, while avoiding the risks of self-turn-on or shoot-through. The 50mohm device will be followed by our upcoming 32mohm, 40mohm, 65mohm, and 105mohm devices.

“The new charge balance structure makes it possible to further reduce the active area up to 50%, compared to αMOS5™, our existing solution. In general, αMOS7™ is an industry-leading high voltage SJ solution designed to address both efficiency driven and cost-driven markets,” said Richard Zhang, Senior Director of Product Line and Global Power Supply businesses at AOS.

Technical Highlights:

Low Ohmic device with ultra-low switching losses
Rugged Body Diode and FRD options (Reduced Qrr) available for more demanding use cases
Rugged SOA and in-rush current capability for Solid-State Relay and Active Bridge applications
Optimized for both High Power and Low Power SMPSes, Solar Inverters, and EV DC Charging applications

SPEC Developed an Advanced SiC Power Chip

Semiconductor Power Electronics Center (SPEC) designed, fabricated, and characterized an implantation-free 3 kV 4H-SiC Bipolar Junction Transistor (BJT). With a 40μm-wide Four-step Junction Termination Extension (JTE), an open base breakdown voltage (BVCEO) and an open emitter breakdown voltage (BVCBO) of more than 3000V are measured. The total width of the JTE is less than two times of the drift thickness (23μm), which can be considered as highly area efficient.

The designed BJT has a 1.2μm narrow base width with 1×1017cm-3 doping, where implantation-free Ohmic contact was achieved. The BJT exhibits an excellent on-resistance of 6.7mΩ·cm2 for small-size devices and an on-resistance of 39.7mΩ·cm2 for large-size devices. The measured current gain for devices with additional anneal process is 21.

Magnachip Debuts New Family of 600V SJ MOSFET Products

Magnachip Semiconductor Corporation (“Magnachip” or “Company”) announced that the Company has released a new family of 600V Super Junction Metal Oxide Semiconductor Field Effect Transistors (SJ MOSFETs) consisting of nine distinct products featuring proprietary design technology.

Magnachip’s proprietary design provides specific on-resistance (RSP) reduction of about 10%, and this result was achieved while maintaining the same cell-pitches of previous generation MOSFETs.

In addition, the new product family of 600V SJ MOSFETs is equipped with a fast recovery body diode. This diode technology significantly enhances system efficiency with reduced reverse recovery time (trr) and switching loss. Therefore, the figure of merit to evaluate general performance of MOSFETs was improved by more than 10% compared to the previous generation. As such, these 600V SJ MOSFETs can be used widely in industrial applications, such as solar inverters, energy storage systems, uninterruptible power supply systems, and a variety of electronics.

Among these new MOSFETs, the MMQ60R044RFTH product offers an exceptionally low RDS(on) of 44mΩ, making it an optimal choice for electric vehicle chargers and servers. Omdia, a global market research firm, estimates that the compound annual growth rates of Si MOSFET markets for hybrid & electric vehicles and servers will be 11% and 7%, respectively, from 2023 to 2026.

“Now that we have introduced these 600V SJ MOSFET products, we are aiming to unveil new 650V and 700V SJ MOSFET products with fast recovery body diode in the second half of 2023,” said YJ Kim, CEO of Magnachip. “These new MOSFETs represent a notable achievement for the Company, and we will build upon this success to deliver next-generation power solutions for rapidly changing market requirements and customer expectations.”

Wolfspeed and ZF to Open R&D Center in Nuremberg

As part of their strategic partnership announced earlier this year, ZF Friedrichshafen AG, a leading global technology company of next generation mobility, and Wolfspeed Inc, the global leader in Silicon Carbide technology, announced their plans to establish a joint European R&D center for Silicon Carbide power electronics in the Nuremberg Metropolitan Region.

The new joint research facility is supported by the German federal government and the regional government of Bavaria. Like the planned Wolfspeed Silicon Carbide chip factory in Ensdorf, Saarland, funding for the new center is subject to approval by the European Commission under the EU’s Important Project of Common European Interest (IPCEI) scheme, as well as antitrust authorities. The aim is to develop the two facilities to become the cornerstone of a new European Silicon Carbide technology network. Construction will begin after IPCEI funding approval has been secured for both projects, which is expected later this year. The goal of the collaboration is to develop breakthrough innovations for Silicon Carbide systems, products, and applications, covering the full value chain from module to complete systems and thus reducing time-to-market significantly. The joint research center will target requirements in all mobility segments including consumer, commercial, agricultural, and industrial vehicles, as well as in the industrial and renewable energy markets. The collaboration aims to drive improvements such as higher efficiency, increased power density and higher performance of electrification solutions. Wolfspeed’s Silicon Carbide expertise and ZF’s access to all mobility segments allows for a fast and seamless transition of new technologies.

ZF and Wolfspeed are partnering with other leading organizations from the scientific and industrial communities to establish a comprehensive European Silicon Carbide technology network. To this end, ZF will use its membership in the European Center of Power Electronics (ECPE) and share key research results at the European level. Over time, the research center is planned to develop into an electronics and semiconductor campus.

“The research center is of outstanding importance for the energy and mobility transition in the EU and supports the strategic goals of Europe,” says Dr Holger Klein, CEO of ZF. “In addition, optimizing Silicon Carbide technology advances industrial transformation and strengthens the independence of European supply chains.”

“This research facility further strengthens our partnership with ZF and underlines our long-term commitment to turn our unique know-how from more than 35 years of experience in Silicon Carbide power electronics into state-of-the-art solutions for our industry partners,” comments Gregg Lowe, CEO of Wolfspeed Inc.

The strategic partnership links ZF, one of the world’s leading suppliers of electric drives, with Wolfspeed, the world’s most recognized specialist in Silicon Carbide technology. “This connection is unique and will lead to enormous advances in Silicon Carbide-based electrical systems and electric drives,” says ZF Board of Management member Stephan von Schuckmann. “This is made possible by the close networking of the research center and production, because fundamentally redesigned Silicon Carbide chips also require new production processes.”

Infineon Diversifies Its Silicon Carbide Supplier Base

Infineon Technologies AG has signed an agreement with Chinese silicon carbide (SiC) supplier SICC to diversify Infineon’s SiC material supplier base and to secure additional competitive SiC sources. Under the agreement, SICC will supply the Germany-based semiconductor manufacturer with competitive and high-quality 150-millimeter wafers and boules for the manufacturing of SiC semiconductors, covering a double-digit share of the forecasted demand in the long term.

The agreement will focus in the first phase on 150-millimeter SiC material, but SICC SiC material supply will also support Infineon’s transition to 200-millimeter wafer diameter. This will generally contribute to supply chain stability, in particular with regard to the growing demand for SiC semiconductor products for automotive, solar and EV charging applications as well as energy storage systems in the Chinese market, and will generally support the rapid growth of the emerging semiconductor material SiC.

“Infineon is significantly expanding its manufacturing capacities at its production sites in Malaysia and Austria in order to serve the growing SiC demand. In this context, we are implementing a multi-supplier and multi-country sourcing strategy to increase resilience for the benefit of our broad customer base and are securing new competitive top-quality sources globally, matching the highest standards in the market,” said Angelique van der Burg, Chief Procurement Officer at Infineon.

Infineon Technologies AG has signed an agreement with Chinese silicon carbide (SiC) supplier SICC

“SICC’s substrates are widely used in the Power SiC field. We are pleased to team up with Infineon as our customer, a global leader in power semiconductors. SICC will continuously expand capacity to add more value for its global customers. We value Infineon as an excellent leading strategic customer and we look forward to jointly enhancing SiC industry development and promoting global digitalization, low-carbonization, and sustainable development,” said Zong Yanmin, CEO of SICC.

Infineon is currently expanding its SiC manufacturing capacity in order to achieve its target of a 30 percent global market share by the end of the decade. Infineon’s SiC manufacturing capacity will increase tenfold by 2027. A new plant in Kulim, Malaysia is scheduled to start production in 2024, adding to Infineon’s manufacturing capacities in Villach, Austria. Today, Infineon already provides SiC semiconductors to more than 3,600 automotive and industrial customers worldwide.

Infineon Announces Supplier Agreement on Wafers and Boules with TanKeBlue

Infineon Technologies AG is diversifying its silicon carbide (SiC) supplier base and has signed a long-term agreement with Chinese SiC supplier TanKeBlue to secure additional competitive SiC sources. TanKeBlue will supply the Germany-based semiconductor manufacturer with competitive and high-quality 150-millimeter SiC wafers and boules for the manufacturing of SiC semiconductors, covering a double-digit share of the forecasted demand in the long term.

The agreement between Infineon and TanKeBlue contributes to general supply chain stability, also with regard to the growing demand for SiC semiconductor products for automotive, solar and EV charging applications and energy storage systems in the Chinese market. It will also support the rapid growth of the emerging semiconductor material SiC. The agreement will focus on 150-millimeter SiC material in the first phase, but TanKeBlue will also provide 200-millimeter SiC material to support Infineon’s transition to 200-millimeter wafer diameter.

“Infineon is significantly expanding its manufacturing capacities at its production sites in Malaysia and Austria to meet the growing demand for SiC. In order to offer the most comprehensive product range possible to our customers, Infineon is currently doubling down on its investments in SiC technology and product portfolio. In this context, we are implementing a multi-supplier and multi-country sourcing strategy to increase resilience to the benefit of our broad customer base,” said Angelique van der Burg, Chief Procurement Officer at Infineon. “TanKeBlue provides excellent material performance and we are pleased to sign a competitive agreement with them.”

“We welcome the opportunity to team up with our customer Infineon, a global leader in power semiconductors. TanKeBlue plans to continuously improve its SiC material and develop its next generation of 200-millimeter wafer technology. We value Infineon as an excellent customer in this regard,” said Yang Jian, CEO of TanKeBlue.

Infineon Breaks Ground for New Plant in Dresden

Infineon Technologies AG has broken ground for a new plant in Dresden together with political leaders from Brussels, Berlin and Saxony. EU Commission President Ursula von der Leyen, German Federal Chancellor Olaf Scholz, Saxony’s Prime Minister Michael Kretschmer and Dresden’s Mayor Dirk Hilbert symbolically launched construction work together with Infineon CEO Jochen Hanebeck. With an investment volume of five billion euros, the new plant is the largest single investment in Infineon’s history.

“With this groundbreaking, Infineon is launching an important contribution to the green and digital transformation of our society,” said Hanebeck. “Global semiconductor demand will grow strongly and persistently in view of the high demand for renewable energies, data centers and electromobility. Our new plant will serve our customers’ demands in the second half of the decade. Together, we are driving decarbonization and digitalization.”

“In times of increasing geopolitical risks, it is great news for Europe that Infineon is investing massively in semiconductor manufacturing in Dresden”, said von der Leyen. “We need more such projects in Europe as demand for microchips will continue to rise rapidly. The EU Commission and member states are mobilizing 43 billion euros over the next few years under the European Chips Act to create a stronger and more resilient Europe in the digital domain.”

“Chips are the basis of any essential transformation technology – from wind farm to charging station. We welcome Infineon’s continued investment in Germany and thus further strengthening our country as one of the world’s most important semiconductor locations,” Scholz emphasized on the occasion of the groundbreaking event. “Chips made in Dresden help secure jobs and make our industry – from midsize companies to large corporations – more resilient. Dresden is where the components are created, that are needed for upcoming investments in green technologies.”

“Infineon’s investment will strengthen Europe, Germany and Saxony as an economic location,” says Kretschmer. “The construction of the new plant will both secure and create high-value jobs in Dresden. At the same time the attractiveness of Silicon Saxony as a center of expertise for the global semiconductor industry is increasing. For years, the state of Saxony has been supporting this unique ecosystem by investing in science.”

In addition, the investment by Infineon strengthens the manufacturing basis for the semiconductors that drive decarbonization and digitalization. Analog/mixed-signal components are used in power supply systems, for example in energy-efficient charging systems, small automotive motor control units, in data centers and in applications for the Internet of Things (IoT). The interaction of power semiconductors and analog/mixed-signal components makes it possible to create particularly energy-efficient and intelligent system solutions.

Expansion of production capacities at the existing Dresden site will let Infineon complete the project quickly and will also generate considerable effects of scale. Manufacturing activities are planned to begin in fall 2026. The expansion will create approximately 1,000 highly qualified jobs. Preparatory measures are currently taking place at the site of the new plant; the start of shell construction is planned for fall 2023.

The plant will be equipped with the latest in environmental technologies and will be among the most environmentally friendly manufacturing facilities of its kind. Thanks to advanced digitalization and automation, Infineon is also setting new standards for manufacturing excellence in Dresden. The new plant will be closely linked with the Infineon Villach site as “One Virtual Fab”. This manufacturing complex for power electronics is based on highly efficient 300-millimeter technology and will increase efficiency levels, giving Infineon additional flexibility in order to supply its customers faster.

In February, the German Federal Ministry for Economic Affairs and Climate Action (BMWK) has approved an early project launch, meaning that construction can already begin before completion of the inspection of legal subsidy aspects by the European Commission. Subject to the European Commission’s state aid decision and the national grant procedure, the project is to be funded in accordance with the objectives of the European Chips Act. Infineon is seeking public funding of around one billion euros.

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