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CGD Demos 800 VDC Multi-Level Inverter Developed Using GaN With IFPEN That Outperforms SiC
Super-high 30 kW/l power density; simple paralleling

Cambridge GaN Devices (CGD), the fabless, clean-tech semiconductor company that develops energy-efficient GaN-based power devices that make greener electronics possible, and IFP Energies nouvelles (IFPEN), a major French public research and training organization in the fields of energy, transport and the environment, have developed a demo which confirms the suitability of CGD’s ICeGaN®650 V GaN ICs in a multi-level, 800 VDC inverter. The demo delivers super-high power density – 30 kW/l - which is greater than can be achieved by more expensive, state-of-the-art silicon-carbide (SiC)-based devices. The inverter realization also demonstrates the ease of paralleling that ICeGaN technology enables; each inverter node has three 25mΩ / 650V ICeGaN ICs - 36 devices in total - in parallel.

ANDREA BRICCONI | CHIEF MARKETING OFFICER, CGD
“We are super excited at this first result of our partnership with IFPEN. 800 VDC supports the 800 V bus which is being increasingly adopted by the EV industry. By addressing automotive and other high voltage inverter applications with energy-efficient ICeGaN-based solutions we are delivering on CGD’s key commitment – sustainability.”

This multi-level GaN Inverters can power electric motors to over 100 kW peak, 75 kW continuous power. The CGD/IFPEN demo features: a high voltage input of up to 800Vdc; 3-phase output; a peak current of 125 Arms (10s) (180 Apk); and a continuous current of 85 Arms continuous (120 Apk).

The ICeGaN multi-level design proposed by IFPEN reveals several compelling benefits:

  • Increased Efficiency: the improvement in the efficiency of the traction inverter leads to an increase in battery range and a reduction in charging cycles. It also leads to a reduction in battery cost if the initial range (iso-range) is maintained;
  • Higher switching frequencies: GaN transistors can operate at much higher frequencies than silicon transistors. This reduces iron losses in the motor, particularly in the case of machines with low inductances;
  • Reduced Electromagnetic Interferences: 3-level topology minimizes EMI and enhances the reliability of the system;
  • Enhanced thermal management: insulated metallized substrate boards featuring an aluminium core facilitate superior thermal dissipation, ensuring optimal operating temperatures and extending the lifespan of the system and associated GaN devices;
  • Modular design: this facilitates scalability and adaptability for varying system requirements.

GAETANO DE PAOLA | PROGRAM MANAGER, IFPEN
“Following the implementation of this inverter reference using CGD’s enabling ICeGaN ICs coupled with innovative topologies, such as multi-level solutions, IFPEN now strongly believes that GaN is a breakthrough technology in terms of performance and cost for high-voltage traction inverters.”

2024111801 / 18.11.2024 / Various / NeoCortec /

NeoCortec enables customers to license NeoMesh wireless mesh networking protocol and software stack
Supporting many different chipsets and sensor types; optimized for high reliability, easy network monitoring and ultra-low power operation

CGD Demos 800 VDC Multi-Level Inverter Developed Using GaN With IFPEN That Outperforms SiC
Super-high 30 kW/l power density; simple paralleling

NeoCortec demos NeoMesh wireless network using LoRa modulation combining low power, scalability and noise immunity
Smart buildings targeted by Embit module – debuts at Electronica

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