VisIC Technologies, a global leader in gallium nitride (GaN) devices for electric vehicles (EVs), has partnered with Heraeus Electronics, a leading global manufacturer of materials for the assembly and packaging of devices in the electronics industry, and PINK, a renowned manufacturer of sintering equipment, to develop an advanced power module utilizing D3GaN technology. This groundbreaking power module is based on a silicon nitride (Si3N4) ceramic substrate, an innovative silver (Ag) sintering process and an advanced top-side interconnect, promising unprecedented reliability and performance for battery electric vehicles (BEVs).
Innovation and Collaboration
The collaboration combines VisIC’s expertise in GaN-based devices, Heraeus Electronics’ cutting-edge packaging materials know-how, and PINK’s state-of-the-art sintering technology. The synergy of these industry leaders has culminated in developing a power module that is setting new standards for GaN-based power modules to revolutionize the EV industry.
D3GaN Technology
VisIC’s D3GaN technology is at the heart of this power module, offering significant improvements in efficiency, thermal management, and power density. This technology leverages the superior electrical properties of gallium nitride to deliver faster switching speeds and higher power handling capabilities compared to traditional silicon-based devices.
Silicon Nitride (Si3N4) Metal Ceramic Substrate
Using a Si3N4 metal ceramic substrate is a key innovation in this power module. Si3N4 is known for its excellent thermal conductivity, mechanical strength, and reliability under high-temperature conditions. These properties are crucial for the demanding environment of electric vehicle applications, ensuring the power module can withstand the rigors of everyday use while maintaining optimal performance.
Silver (Ag) Sintering Process
The adoption of the silver sintering process by PINK enhances the thermal and electrical conductivity of the module. Silver sintering is a low-temperature bonding process that creates robust and reliable connections between components, improving the module’s overall durability and efficiency. This process is critical for the high reliability required in EV powertrains, where consistent performance is non-negotiable.
High-Reliability Module for BEVs
The resulting power module is designed to meet the stringent reliability and performance standards of the electric vehicle industry. Its advanced materials and innovative construction techniques ensure it can deliver the high-power density of over 500 A rms/650 V and efficiency needed for modern BEVs, while also offering long-term reliability and durability at a cost point near silicon devices.
Industry Impact
This collaboration marks a significant milestone in the advancement of power electronics for electric vehicles. The integration of VisIC’s D3GaN technology with Heraeus Electronics’ sintering paste and PINK’s Ag and Cu sintering process and flexible sintering equipment sets a new benchmark for power module performance in the EV market. This innovation is expected to drive the adoption of GaN technology in EV applications, paving the way for more efficient, reliable, and sustainable electric transportation solutions.
Tamara Baksht, CEO of VisIC, states: “We are thrilled to work with the leading manufacturer of sintering processes of Heraeus Electronics and PINK and adapt their experience into GaN-based power modules to develop the next generation of power modules for high-volume automotive inverter applications.”
PINK, Andrea Pink, CEO of PINK statement: “We are excited to work with such a future-driven company as VisIC together with our long-term partner Heraeus Electronics, supporting the newest product innovation for GaN applications.”
Heraeus Electronics Dr. Michael Jörger, EVP Head of Business Line Power Electronic Materials added: “With our materials, application know-how, and engineering services we are glad to work with our partners on speeding up the innovative approach of highly efficient GaN modules for automotive applications.”
