News: Microelectronics
14 September 2026
Eggtronic introduces high-efficiency 140W USB-C Power Delivery reference design
Eggtronic of Modena, Italy (which provides mixed-signal IC controllers for power electronics) has announced the availability of a 140W USB-C Power Delivery AC/DC reference platform for next-generation premium laptops and high-performance devices. This reference design is developed based on Renesas’ high-voltage GaN transistors.
The new platform combines Eggtronic's EPIC™ combo controller with Renesas' high-voltage GaN device, the TP70H150G4LSG (700V, 150mΩ RDS(on)), delivering what is claimed to be an unprecedented combination of extreme efficiency, outstanding cost-effectiveness, and simplified system architecture.
Unlike conventional high-power USB-C adapters that rely on costly LLC, asymmetrical half-bridge (AHB), or active clamp flyback (ACF) topologies, the new reference design achieves efficiencies approaching 96% while maintaining the bill-of-materials cost of a traditional QR flyback converter.
The platform is also said to deliver excellent efficiency across the entire operating range, including 94.5% efficiency at 90VAC input and outstanding light-load performance, enabling compliance with the latest DOE Level VII energy-efficiency requirements.
Eggtronic’s EPIC combo controller integrates major control functions into a single device, including:
- totem-pole power factor correction (PFC);
- isolated primary-side regulation;
- synchronous rectification;
- proprietary ultra-low-latency isolated communication; and
- USB Power Delivery protocol management.
The platform’s totem-pole PFC overcomes two of the most common limitations of conventional implementations — EMI performance and light-load efficiency — while maintaining what is claimed to be industry-leading conversion efficiency.
The PFC stage feeds Eggtronic’s proprietary QuarEgg regenerative flyback architecture, which utilizes a single primary-side switch to achieve higher efficiency and lower system cost than LLC, AHB and ACF converters while maintaining the simplicity and economics of a QR flyback design.
“The demand for compact, cost-effective, highly efficient USB-C power adapters continues to grow rapidly,” says Eggtronic’s founder & CEO Igor Spinella. “By combining Renesas’ outstanding GaN technology with our EPIC combo-controller, we have created a platform that significantly raises the bar for both efficiency and cost-effectiveness. We believe this reference design provides OEMs with a compelling path toward the next generation of premium power adapters,” he adds.
“Renesas is committed to enabling the next generation of highly efficient and cost-effective power solutions through our advanced GaN technology,” says Rohan Samsi, VP of Renesas’ GaN business division. “The reference platform is a direct result of our collaboration with Eggtronic, which brings together complementary expertise in power conversion and digital control. It gives customers a strong foundation for developing compact, high-performance power systems such as USB-C charging at a competitive cost.”
The 140W USB-C Power Delivery reference board is available now and is intended to accelerate the development of high-performance notebook adapters and other USB-C powered devices.
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