140W USB-C Power Delivery Reference Design – Eggtronic, a leader in energy-efficient power conversion technologies, today 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, 150 mΩ RDS(on)), delivering 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 also delivers excellent efficiency across the entire operating range, including 94.5% efficiency at 90 VAC input and outstanding light-load performance, enabling compliance with the latest DOE Level VII energy efficiency requirements.
At the heart of the solution is Eggtronic’s EPIC™ combo controller, which integrates every major control function into a single device, including:
- Totem Pole Power Factor Correction (PFC)
- Isolated primary-side regulation
- Synchronous rectification
- Proprietary ultra-low-latency isolated communication
- 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 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,” said Igor Spinella, Founder and CEO of Eggtronic. “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.”
Rohan Samsi, Vice President, GaN Business Division at Renesas, added: “Renesas is committed to enabling the next generation of highly-efficient and cost-effective power solutions through our advanced GaN technology. 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.
