ROHM and TSMC collaborate to develop automotive gallium nitride technology

ROHM and TSMC collaborate to develop automotive gallium nitride technology
ROHM and TSMC collaborate to develop automotive gallium nitride technology

Japanese electronic parts manufacturer ROHM has formed a strategic partnership with Taiwanese foundry TSMC for the development and volume production of gallium nitride (GaN) power devices for EVs.

The partnership will integrate ROHM’s device development technology with TSMC’s GaN-on-silicon process technology.

GaN power devices are currently used in consumer and industrial applications, such as AC adapters and server power supplies. TSMC supports GaN technology for its potential benefits in automotive applications, such as EV onboard chargers and inverters.

The partnership builds on the companies’ previous collaboration on GaN power devices. In 2023, ROHM adopted TSMC’s 650 V GaN high-electron mobility transistors (HEMT), which are increasingly being used in consumer and industrial devices, as part of its EcoGaN series, including its 45 W AC adapter C4 Duo.

Back in 2018, ROHM partnered with specialist GaN Systems to develop power electronics and research new automotive applications. GaN Systems has since been acquired by German semiconductor manufacturer Infineon.

“GaN devices, capable of high-frequency operation, are highly anticipated for their contribution to miniaturization and energy savings,” said Katsumi Azuma, Member of the Board and Senior Managing Executive Officer at ROHM.

“By combining TSMC’s expertise in semiconductor manufacturing with ROHM’s proficiency in power device design, we strive to push the boundaries of GaN technology and its implementation for EVs,” added Chien-Hsin Lee, Senior Director of Specialty Technology Business Development at TSMC.

Source: ROHM

Proposed Changes to U.S. EV Policies Under Trump Transition Team

As incoming U.S. President Donald Trump prepares to take office, his transition team has outlined significant changes to electric vehicle (EV) policies. According to a document seen by Reuters, these recommendations could shift priorities away from EV support, focusing instead on boosting domestic production and redirecting funds to national defense.

What Are the Proposed Changes?

The recommendations suggest several policy shifts that differ from the current administration’s approach:

  1. Cutting EV Support:

    • The transition team proposes ending the Biden administration’s $7,500 tax credit for EV buyers. This incentive has helped make EVs more affordable for many Americans.

    • It also recommends halting federal funding for EV charging stations. These funds would be redirected to strengthen the U.S. battery supply chain and national defense.

  2. Imposing Tariffs:

    • New tariffs on battery materials, components, and EV supply chain imports are suggested. These tariffs aim to protect U.S. industries and reduce dependence on imports, particularly from China.

    • The document mentions negotiating exemptions with allied countries while maintaining tariffs globally.

  3. Rolling Back Emissions Standards:

    • The team proposes returning emissions and fuel-economy standards to 2019 levels. This change would allow more gas-powered vehicles and relax the stricter limits championed under the Biden administration.

    • Blocking California from setting its own stricter emissions standards is also recommended. California’s policies have influenced over a dozen other states to adopt tougher rules.

  4. National Defense Focus:

    • The team emphasizes that battery materials and critical minerals are essential for U.S. national security. Funds previously allocated for EV support would go toward ensuring these materials are free from reliance on China.

    • Programs promoting electric military vehicles would be ended, with resources redirected to defense priorities.

Why These Changes?

The transition team’s recommendations are designed to align with President Trump’s campaign promises:

  • Supporting the auto industry by reducing regulations on gas-powered cars.

  • Strengthening domestic production to reduce reliance on foreign imports.

  • Prioritizing national defense needs over climate-focused initiatives like EV expansion.

According to Karoline Leavitt, a spokeswoman for the transition team, these policies aim to balance the needs of both gas-powered and electric vehicle markets.

Impact on the EV Industry

If implemented, these changes could have significant effects on EV adoption and production in the United States:

  1. For Automakers:

    • Legacy automakers like General Motors and Hyundai, which have invested heavily in EVs, might face challenges if consumer incentives are removed and production costs rise due to tariffs.

    • Tesla, the leading U.S. EV seller, could also see an impact. However, CEO Elon Musk has indicated that Tesla might adapt better than competitors if subsidies disappear.

  2. For Consumers:

    • Eliminating tax credits would likely make EVs more expensive, reducing their appeal for cost-conscious buyers.

    • Fewer public charging stations could deter potential EV adopters who rely on accessible infrastructure.

  3. For the Environment:

    • Relaxing emissions standards and increasing gas-powered vehicle production could lead to higher overall pollution levels.

    • States like California, which have pushed for stricter environmental policies, would face obstacles in maintaining their progress.

Key Takeaways

The proposed changes represent a stark shift from the current administration’s EV policies, focusing less on rapid EV adoption and more on domestic production and national defense priorities. While these recommendations are not yet official policies, they signal a potential shift in how the U.S. approaches transportation and energy in the coming years.

Source: reuters.com

Wevo-Chemie unveils silicone thermal gap filler for power electronics and batteries

Wevo-Chemie unveils silicone thermal gap filler for power electronics and batteries
Wevo-Chemie unveils silicone thermal gap filler for power electronics and batteries

German adhesives and sealants producer Wevo-Chemie is expanding its portfolio of thermal interface materials with an optimized silicone gap filler.

WEVOSIL 26040 FL features high thermal conductivity of 4 W/m*K for efficient heat dissipation for large surfaces. The material has been formulated to be resistant to sedimentation, allowing it to be stored, used and transported over long distances for at least three months without having to be rehomogenized.

The material’s specially developed filler combination and the resulting low bond line thickness of <70 µm bridge small gaps. Material properties such as reactivity can be customized to individual needs, according to the company.

The optimized dosing properties permit simple and efficient handling, high dispensing speeds and fine dosing patterns. This ensures greater precision and flexibility in production compared to thermally conductive pads, particularly when manufacturing large unit volumes.

The filler provides high temperature resistance of up to 200° C, flame-retardant properties in accordance with UL 94 V-0 (as of a thickness of just 2 mm) and mechanical properties including elongation at break of more than 30%.

When cured, WEVOSIL 26040 FL meets the requirements of the PV 3040 test specification for low-volatile emissions in the automotive industry.

“Whether it’s high dosage volumes, reliable heat dissipation for large surfaces or mechanically demanding thermal joints that are needed, the new silicone gap filler from Wevo is a solution for numerous requirements in contemporary electronics and electrical engineering,” the company said.

Source: Wevo-Chemie

Waymo robotaxi caught endlessly circling a roundabout

Waymo robotaxi caught endlessly circling a roundabout
Waymo robotaxi caught endlessly circling a roundabout

A Waymo robotaxi was recently captured on video repeatedly circling a roundabout in a quiet residential area. How long the dizzying drive lasted remains unclear, but the company has since confirmed that no passengers were on board during the incident.