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The 600 V CoolMOS™ 8 high-voltage superjunction (SJ) MOSFET product family from Infineon Technologies AG has allowed Enphase Energy, a global energy technology company and a leading supplier of microinverter-based solar and battery systems, to simplify its system design and reduce assembly costs. By using the 600 V CoolMOS 8 SJ, Enphase is able to significantly reduce MOSFET resistance (R DS(on)) for its solar inverter systems, leading to lower conduction losses, which improves overall device efficiency and boosts power density. In addition, the company achieved MOSFET related cost savings.
“We are thrilled to partner with Enphase and support their mission to deliver innovative solar energy solutions,” said Richard Kuncic, Senior Vice President and General Manager at Infineon. “Our 600 V CoolMOS 8 SJ MOSFETs are designed to provide superior efficiency, reliability, and cost savings, which aligns perfectly with Enphase’s and Infineon’s commitment to advancing the performance and affordability of renewable energy technologies, further driving decarbonization.”
“Collaborating with Infineon has allowed us to leverage their CoolMOS 8 SJ MOSFET technology to enhance the performance and cost-effectiveness of our microinverter systems,” said Aaron Gordon, Senior Vice President and General Manager of the Systems Business Unit at Enphase Energy. “This partnership underscores our dedication to innovation and excellence in the solar energy industry, and we are excited about the significant improvements in power density and cost savings that we are now able to offer our customers.”
Infineon’s latest CoolMOS 8 MOFETs at 600 V are leading the way in high-voltage superjunction MOSFET technology worldwide, setting the standard for both technology and price performance on a global scale. The technology increases overall system performance and further reinforces decarbonization in applications such as chargers and adapters, solar and energy storage systems, EV charging, and uninterruptible power supplies (UPS).
The CoolMOS 8 SJ MOSFETs have an 18 percent lower gate charge than the CFD7 and 33 percent lower than the P7 series. A reduced gate charge allows for less electric charge to be applied to the gate of a MOSFET to switch it from the off state (non-conducting) to the on state (conducting), enabling a more energy-efficient system performance.
Additionally, the CoolMOS 8 SJ MOSFETs have the quickest turn-off time in the market and their thermal performance has been improved by 14 to 42 percent compared to the previous generation. The 600 V CoolMOS 8 SJ technology is equipped with an integrated fast body diode and is available in SMD-QDPAK, TOLL, and Thin-TOLL 8×8 packages, making it suitable for a wide range of consumer and industrial applications.
Samples for the portfolio extension of 600 V CoolMOS 8 SJ MOSFETs and 650 V CoolMOS 8 SJ MOSFETs are available from early April on.
Original – Infineon Technologies
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Navitas Semiconductor has announced that its portfolio of 3.2kW, 4.5kW, and 8.5 kW AI data center power supply unit (PSU) designs exceed the new 80 PLUS ‘Ruby’ certification, focused on the highest level of efficiency for redundant server data center PSUs.
The 80 PLUS certification program assesses and certifies the energy efficiency of internal PSUs in computers and servers. The ‘Ruby’ certification was announced in January 2025 by 80 PLUS’s administrating body, CLEAResult, following its endorsement by the Green Grid consortium.
‘Ruby’ is the most rigorous PSU efficiency standard since the ‘Titanium’ certification was released 14 years ago. In comparison, Ruby sets an additional 1% system efficiency across all load conditions, except at 50% load (which requires a 0.5% increase), to achieve a new benchmark of 96.5% efficiency.
This new standard offers the industry a clear path to enhanced energy efficiency, helping data centers address the evolving needs of cloud storage, commercial sectors, and the increasing pressure on the grid from AI computing. For example, every Ruby-certified 3.2 kW CRPS185 PSU can save up to 420 kilowatt-hours during a 3-year lifetime. That is the equivalent of over 400 kg of CO2 emissions.
Navitas exceeds both Ruby and Titanium certifications on their portfolio of AI data center PSU reference designs, ranging from 3.2 kW to 8.5 kW, and are powered by high-power GaNSafe™ ICs and GeneSiC™ Gen 3 ‘Fast’ SiC MOSFETs.
Navitas is the established leader in AI data center solutions enabled by GaN and SiC technology. In August 2023, they introduced a high-speed, high-efficiency 3.2 kW CRPS, achieving a 40% smaller size than best-in-class, legacy silicon solutions for power-hungry AI and Edge computing. This was followed by the world’s highest power density 4.5 kW CRPS, achieving a ground-breaking 137 W/in3, and efficiency of over 97%.
In November 2024, Navitas released the world’s first 8.5 kW AI data center power supply powered by GaN and SiC that could meet 98% efficiency, complying with the Open Compute Project (OCP) and Open Rack v3 (ORv3) specifications. Additionally, Navitas created IntelliWeave, an innovative patented new digital control technique, that when combined with high-power GaNSafe and Gen 3-Fast SiC MOSFETs, enables PFC peak efficiencies to 99.3% and reduces power losses by 30% reduction compared to existing solutions.
“Compared with Titanium, Ruby cuts the allowable PSU losses significantly and will be critical in enabling the data center industry to reduce its carbon footprint and cut operational costs,” said Gene Sheridan, CEO and co-founder of Navitas. “With the industry set to consume 1,000 TWh annually by next year1, every percentage point improvement in efficiency represents a reduction of 10 TWh, or approximately 3.5 million tons of CO22. Advances in our GaNFast and GeneSiC products enable these targets to be met and significantly exceeded.”
Navitas’ AI Power Roadmap and 80 PLUS Ruby-compliant demos can be viewed at the ‘Planet Navitas’ booth #1107 during the APEC 2025 conference, which takes place at Atlanta’s Georgia World Congress Center from March 16 to 20.
Original – Navitas Semiconductor
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onsemi introduced the first generation of its 1200V silicon carbide (SiC) metal oxide semiconductor field-effect transistor (MOSFET) based SPM 31 intelligent power modules (IPMs). onsemi EliteSiC SPM 31 IPMs deliver the highest energy efficiency and power density in the smallest form factor compared to using Field Stop 7 IGBT technology, resulting in lower total system cost than any other leading solution on the market.
Their improved thermal performance, reduced power losses and ability to support fast switching speeds makes these IPMs ideally suited for three-phase inverter drive applications such as electronically commutated (EC) fans in AI data centers, heat pumps, commercial HVAC systems, servo motors, robotics, variable frequency drives (VFDs), and industrial pumps and fans.
The EliteSiC SPM 31 IPMs offer several current ratings from 40A to 70A. Complemented by onsemi’s IGBT SPM 31 IPM portfolio, covering low currents from 15A to 35A, onsemi now provides the industry’s broadest range of scalable and flexible integrated power module solutions in a small package.
In 2023, operations of residential and commercial buildings accounted for 27.6% of U.S. end-use energy consumption. As electrification and AI adoption grow, particularly with the construction of more AI data centers increasing energy demands, the need to reduce the energy consumption of applications in this sector is becoming more critical. Power semiconductors capable of efficiently converting electric power are the key in this transition to a low-carbon-emissions world.
With the number and size of data centers growing, the demand for EC fans is expected to rise. These cooling fans maintain the ideal operating environment for all equipment in a data center and are essential for accurate, error-free data transmission. The SiC IPM ensures the EC fan operates reliably and at its highest efficiency.
Like many other industrial applications such as compressor drives and pumps, EC fans require higher power density and efficiency than existing larger IGBT solutions. By switching to EliteSiC SPM 31 IPMs, customers can benefit from a smaller footprint, higher performance, and a simplified design due to high integration, resulting in shortened development time and lower total system cost in addition to reduced GHG emissions. For example, compared to a system solution that uses a current IGBT power integrated module (PIM) with power losses of 500W at 70% load, implementing highly efficient EliteSiC SPM 31 IPMs could reduce the annual energy consumption and cost per EC fan by 52%.
The fully integrated EliteSiC SPM 31 IPM consists of an independent high side gate driver, low voltage integrated circuit (LVIC), six EliteSiC MOSFETs and a temperature sensor (voltage temperature sensor (VTS) or thermistor). The module is based on the industry-leading M3 SiC technology that shrinks die size and is optimized for hard-switching applications with improved short-circuit withstand time (SCWT) performance when used in the SPM 31 package, making them suitable for inverter motor drives for industrial use. The MOSFETs are configured in a three-phase bridge with separate source connections for the lower legs for maximum flexibility in the choice of control algorithm.
In addition, the EliteSiC SPM 31 IPMs include the following benefits:
- Low loss, short-circuit-rated M3 EliteSiC MOSFETs to prevent catastrophic equipment and component failures such as electric shock or fire.
- Built-in under-voltage protection (UVP) to protect against damage to the device when voltage is low.
- As the peer-to-peer product of FS7 IGBT SPM 31, customers can choose between various current ratings while using the same PCB board.
- UL certified to meet national and international safety standards
- Single-grounded power supply offering better safety, equipment protection and noise reduction.
- Simplified design and reduced size of customer boards due to
- Included controls for gate drivers and protections
- Built-in bootstrap diodes (BSDs) and resistors (BSRs)
- Internal boost diodes provided for high side gate boost drive
- Integrated temperature sensor (VTS output by LVIC and/or thermistor)
- Built-in high-speed high-voltage integrated circuit
Original – onsemi
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Texas Instruments debuted new power-management chips to support the rapidly growing power needs of modern data centers. As the adoption of high-performance computing and artificial intelligence (AI) increases, data centers require more power-dense and efficient solutions.
TI’s new TPS1685 is the industry’s first 48V integrated hot-swap eFuse with power-path protection to support data center hardware and processing needs. To simplify data center design, TI also introduced a new family of integrated GaN power stages, the LMG3650R035, LMG3650R025and LMG3650R070, in industry-standard TOLL packaging. TI is showcasing these devices at the 2025 Applied Power Electronics Conference (APEC), March 16-20, in Atlanta, Georgia.
“With data centers increasingly demanding more energy, powering the world’s digital infrastructure begins with smarter, more efficient semiconductors,” said Robert Taylor, general manager, Industrial Power Design Services. “While advanced chips drive AI’s computational power, analog semiconductors are key to maximizing energy efficiency. Our latest power-management innovations are enabling data centers to reduce their environmental footprint while supporting the growing needs of our digital world.”
As power demands surge, data center designers are shifting to 48V power architectures for enhanced efficiency and scalability to support components such as CPUs, graphics processing units and AI hardware accelerators. TI’s 48V stackable integrated hot-swap eFuse with power-path protection empowers designers to tackle high-power (>6kW) processing needs with a scalable device that simplifies design and reduces solution size by half compared to existing hot-swap controllers in the market.
To learn more about designing with the TPS1685, read the technical article, “Powering Modern AI Data Centers with an Integrated 48V Hot-Swap eFuse Device.”
In addition, TI introduced a new family of integrated GaN power stages. The LMG3650R035, LMG3650R070 and LMG3650R025 leverage the benefits of TI GaN in an industry-standard TOLL package, allowing designers to take advantage of TI GaN efficiency without costly and time-consuming redesigns.
The new power stages integrate a high-performance gate driver with a 650V GaN field-effect transistor (FET) while achieving high efficiency (>98%) and high-power density (>100W/in3). They also integrate advanced protection features including over-current protection, short-circuit protection and over-temperature protection. This is especially important for AC/DC applications like server power, where designers are challenged to push more power into smaller spaces.
At APEC 2025, TI will showcases power solutions that enable designers to reimagine new levels of power density and efficiency, including:
- Dell’s 1.8kW server power-supply unit (PSU) with TI GaN power stages: Dell’s first high-efficiency 12V PSU design uses a TI integrated GaN power stage. The PSU features a GaN FET with built-in driver, protection and temperature reporting to achieve over 96% system-level efficiency.
- Vertiv’s 5.5kW server PSU: Part of Vertiv’s PowerDirect Rack DC power system, the latest PSU from Vertiv is powered by TI GaN technology to deliver up to 132kW per rack.
- Greatwall’s 8kW PSU: To help designers increase power density, Greatwall and TI co-developed an 8kW open-rack PSU using TI GaN technology and TI C2000™ real-time microcontrollers.
Throughout the show, TI power experts will lead 27 industry and technical sessions to address power-management design challenges. Visit TI in the Georgia World Congress Center, Booth No. 1213. The full schedule is available at ti.com/APEC.
Original – Texas Instruments
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Axcelis Technologies, Inc. will be the Diamond Sponsor for the Compound Semiconductor Asia Conference (CS Asia) 2025. The event is being held in conjunction with SEMICON China 2025 on March 25-27, 2025, at the Kerry Hotel in Pudong, Shanghai. Axcelis’ President and CEO, Russell Low, will present an opening Keynote Speech at the event.
Innovation in Ion Implantation for Power and Compound Semiconductor Devices
Russell Low, PhD
President & CEO, Axcelis Technologies
14:30 – 15:00
Shanghai Ballroom 3, Kerry HotelPresident and CEO Russell Low, said, “We’re pleased to be a part of SEMICON China and especially excited about participating in the CS Asia Conference, one of the most important power and compound semiconductor technology forums in the Asia Pacific region. Axcelis is well positioned with a broad portfolio and deep technical expertise in this market, and we look forward to providing our innovative ion implant technology to chipmakers in China.”
Original – Axcelis Technologies
