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ROHM has developed 100V breakdown Schottky barrier diodes (SBDs) that deliver industry-leading reverse recovery time (trr) for power supply and protection circuits in automotive, industrial, and consumer applications.
Although numerous types of diodes exist, highly efficient SBDs are increasingly being used inside a variety of applications. Particularly SBDs with a trench MOS structure that provide lower VF than planar types enable higher efficiency in rectification applications. One drawback of trench MOS structures, however, is that they typically feature worse trr than planar topologies – resulting in higher power loss when used for switching.
In response, ROHM developed a new series utilizing a proprietary trench MOS structure that simultaneously reduces both VF and IR (which are in a trade-off relationship) while also achieving class leading trr.
Expanding on the four existing conventional SBD lineups optimized for a variety of requirements, the YQ series is ROHM’s first to adopt a trench MOS structure. The proprietary design achieves class-leading trr of 15ns that reduces trr loss by approx. 37% and overall switching loss by approx. 26% over general trench-type MOS products, contributing to lower application power consumption.
The new structure also improves both VF and IR loss compared to conventional planar type SBDs. This results in lower power loss when used in forward bias applications such as rectification, while also providing less risk of thermal runaway which is a major concern with SBDs. As such, they are ideal for sets requiring high-speed switching, such as drive circuits for automotive LED headlamps and DC-DC converters in xEVs that are prone to generate heat.
Going forward, ROHM will strive to further improve the quality of its semiconductor devices, from low to high voltages, while strengthening its expansive lineup to further reduce power consumption and achieve greater miniaturization.
SBD Trench MOS Structure
The trench MOS structure is created by forming a trench using polysilicon in the epitaxial wafer layer to mitigate electric field concentration. This reduces the resistance of the epitaxial wafer layer, achieving lower VF when applying voltage in the forward direction. At the same time, during reverse bias the electric field concentration is minimized, significantly decreasing IR. As a result, the YQ series improves VF and IR by approx. 7% and 82%, respectively, compared to conventional products.
And unlike with typical trench MOS structures where trr is worse than planar types due to larger parasitic capacitance (resistance component in the device), the YQ series achieves an industry-leading trr of 15ns by adopting a unique structural design. This allows switching losses to be reduced by approx. 26%, contributing to lower application power consumption.Application Examples
- Automotive LED headlamps
- xEV DC-DC converters
- Power supplies for industrial equipment
- Lighting
Original – ROHM
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Renesas Electronics Corporation and Altium Limited, a global leader in electronics design systems, announced they have entered into a Scheme Implementation Agreement (“SIA”) for Renesas to acquire Altium by way of a Scheme of Arrangement under Australian law (“Scheme”). Under the terms of the transaction, subject to satisfaction of a number of conditions, Renesas will acquire all outstanding shares of Altium for a cash price of A$68.50 per share, representing a total equity value of approximately A$9.1 billion (approximately 887.9 billion yen at an exchange rate of 97 yen to the A$) and an enterprise value of A$8.8 billion (approximately 859.3 billion yen at an exchange rate of 97 yen to the A$).
The acquisition enables two industry leaders to join forces and establish an integrated and open electronics system design and lifecycle management platform that allows for collaboration across component, subsystem, and system-level design. The transaction strongly aligns with Renesas’ digitalization strategy and represents the company’s first significant step in bringing enhanced user experience and innovation at the system level for electronics system designers.
As technology advances, the design and integration of electronic systems become increasingly complex. The current electronics system design flow is a complicated and iterative process that involves multiple stakeholders and design steps, from component selection and evaluation to simulation and PCB physical design. Engineers must be able to design systems that are not only functional but also efficient and cost-effective under shortened development cycles.
Together, Renesas and Altium, under a shared vision, aim to build an integrated and open electronics system design and lifecycle management platform that unifies these steps at a system level. The acquisition brings together Altium’s sophisticated cloud platform capabilities with Renesas’ strong portfolio of embedded solutions, combining high-performance processors, analog, power and connectivity.
The combination will also enable integration with third-party vendors across the ecosystem to execute all electronic design steps seamlessly on the cloud. The electronics system design and lifecycle management platform will deliver integration and standardization of various electronic design data and functions and enhanced component lifecycle management, while enabling seamless digital iteration of design processes to increase overall productivity. This brings significantly faster innovation and lowers barriers to entry for system designers by reducing development resources and inefficiencies.
“Development processes continue to evolve and accelerate. With our Purpose “To Make Our Lives Easier” in mind, our vision is to make electronics design accessible to the broader market to allow more innovation through a cloud-based platform,” said Hidetoshi Shibata, CEO of Renesas. “Addition of Altium will enable us to deliver an integrated and open development platform, making it easier for businesses of all sizes and industries to build and scale their systems. We look forward to working with Altium’s talented team as we continue to invest and drive our combined platform to the next level of value for our customers.”
“I strongly believe that electronics is the single most critical industry to building a smart and sustainable world. Renesas’s visionary leadership and commitment to making electronics accessible to all resonates strongly with Altium. Altium’s vision of industry transformation finds its fullest expression in service of this grand vision of Renesas,” said Aram Mirkazemi, CEO of Altium. “Having worked closely with Renesas as a partner for nearly two years, we are excited to be part of the Renesas team as we continue to successfully execute and grow.”
Altium’s history began in 1985 from Australia as one of the world’s first printed-circuit board (PCB) design tool providers. The company has grown into a global market leader with the most popular PCB software tool in use today. Its software tools empower and connect PCB designers, part suppliers and manufacturers to develop and manufacture electronics products faster and more efficiently.
With the addition of the world’s first digital platform for design and realization of electronics hardware, Altium 365, Altium’s leading PCB design software creates seamless collaboration across the entire PCB design process. In June 2023, Renesas announced that it had standardized development of all PCB design on the Altium 365 cloud-based platform from Altium. Renesas has been working with Altium to publish all its products’ ECAD libraries to the Altium Public Vault. With features such as manufacturer part search on Altium365, customers can choose Renesas parts directly from the Altium library for faster time to market.
The transaction has been unanimously approved by the boards of directors of both companies and is expected to close in the second half of 2024. Completion of the transaction is subject to approval by Altium shareholders, Australian court approval as well as regulatory approvals and other customary closing conditions.
The Altium Board unanimously recommends that Altium shareholders vote in favor of the Scheme, in the absence of a superior proposal and subject to the independent expert concluding (and continuing to conclude) that the Scheme is in the best interests of Altium shareholders. Subject to those same qualifications, each Altium director intends to vote, or cause to be voted, all Altium shares held or controlled by them in favour of the Scheme. Altium will continue to be led by CEO Aram Mirkazemi as a wholly-owned subsidiary of Renesas.
Financial Highlights
The acquisition strengthens Renesas’ financial profile and provides shareholders significant value by accelerating Renesas’ Digitalization strategy.
Financial highlights of the transaction include:
- Purchase of all Altium common stock for A$68.50 per share in cash. This represents a premium of approximately 34% to the closing price of Altium common stock on February 14, 2024, the last trading day prior to the transaction announcement, a premium of approximately 39% to Altium’s one-month volume-weighted average price (“VWAP”) from January 15, 2024, a premium of approximately 46% to Altium’s three-month VWAP from November 15, 2023 and a premium of approximately 31% to Altium’s all-time high closing price.
- The all-cash transaction represents an equity value of approximately A$9.1 billion (approximately 887.9 billion yen at an exchange rate of 97 yen to the A$), and an enterprise value of approximately A$8.8 billion (approximately 859.3 billion yen at an exchange rate of 97 yen to the A$).
- The transaction is immediately accretive to earnings without synergies; the combined company expects to achieve earnings impact from revenue and cost synergies after the completion of the transaction. Altium brings US$263 million revenue, 36.5% EBITDA margin, and 77% recurring revenue. These metrics are based on Altium’s fiscal year ended June 30, 2023.
- Renesas plans to finance the transaction with bank loans and cash on hand and the transaction is not subject to any financing condition.
- Renesas expects to deleverage its Net debt/Non-GAAP EBITDA multiple to <1.0x within 3 years after the completion of the transaction.
Advisors and counsel
Deutsche Bank is serving as exclusive financial advisor to Renesas; DLA Piper LLP, Covington & Burling LLP and Nagashima Ohno & Tsunematsu are serving as Renesas’ legal counsel. J.P. Morgan Securities LLC is serving as exclusive financial advisor to Altium; King & Wood Mallesons and Reed Smith LLP are serving as Altium’s legal counsel.
Original – Renesas Electronics
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Applied Materials, Inc. reported results for its first quarter ended Jan. 28, 2024.
- Revenue $6.71 billion, flat year over year
- GAAP operating margin 29.3 percent and non-GAAP operating margin 29.5 percent, up 0.1 points and flat year over year, respectively
- GAAP EPS $2.41 and non-GAAP EPS $2.13, up 19 percent and 5 percent year over year, respectively
- Generated $2.33 billion in cash from operations
Applied generated revenue of $6.71 billion. On a GAAP basis, the company reported gross margin of 47.8 percent, operating income of $1.97 billion or 29.3 percent of net revenue, and earnings per share (EPS) of $2.41. On a non-GAAP basis, the company reported gross margin of 47.9 percent, operating income of $1.98 billion or 29.5 percent of net revenue, and EPS of $2.13.
The recently disclosed change in useful lives of certain property, plant and equipment increased GAAP and non-GAAP EPS by $0.03. The company generated $2.33 billion in cash from operations and distributed $966 million to shareholders including $700 million in share repurchases and $266 million in dividends.
“Applied Materials delivered strong results in the first quarter of fiscal 2024 and has outperformed our markets for the fifth consecutive year,” said Gary Dickerson, President and CEO. “Our leadership positions at key semiconductor inflections support continued outperformance as customers ramp next-generation chip technologies critical to AI and IoT over the next several years.”
Original – Applied Materials
