Eggtronic Released 140W USB-C Reference Design
The new architecture aims to streamline high-power charging by replacing traditional optocouplers with high-speed digital feedback.
Updated on Sept. 23, 2026 in Semiconductors
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Eggtronic has released a 140-watt USB-C Power Delivery 3.1 reference design that achieves 95.5% peak power efficiency. The system is designed for universal input ranges between 90 VAC and 264 VAC.
Why it matters
By integrating high-speed digital feedback loops instead of conventional optocouplers, this design improves transient response and reliability for high-power electronics. This approach allows manufacturers to meet stringent efficiency standards while scaling power density in compact chargers.
The architecture utilizes the EPIC2ACB04 primary-side controller and EPIC2ACQ07 secondary-side companion controller, alongside a 700-V, 150-mΩ SuperGaN FET. It supports a maximum output of 28 V at 5 A and maintains 92% efficiency even at light loads.
The players
Eggtronic
An electronics firm specializing in power conversion and wireless power technology with a focus on high-efficiency semiconductor control.
Renesas
A global semiconductor manufacturer known for its portfolio of microcontrollers, power management integrated circuits, and wide-bandgap power devices.
The details
The design utilizes a two-stage approach where the EPIC2ACB04 controller manages an active totem-pole power factor correction front end—a circuit that minimizes electricity waste—and a flyback switching stage to regulate energy transfer. The EPIC2ACQ07 companion chip then oversees synchronous rectification and USB PD 3.1 protocol management. By eliminating the optocoupler—an internal component that transfers signals using light—the system uses a high-speed digital feedback loop to increase responsiveness during rapid load changes.
Timeline
September 23, 2026: The 140-W USB-C PD 3.1 reference design became available.
The Tech Race
This release marks a significant step in the competition to optimize GaN-based power conversion for the 140-watt segment of the USB-PD 3.1 ecosystem. It positions Eggtronic against existing proprietary designs that still rely on traditional analog feedback methods.
This technology will first reach consumers through third-party power adapter manufacturers and laptop charger brands who adopt the Eggtronic reference board. Users should expect more compact, high-efficiency 140-watt chargers in the coming quarters as OEMs integrate these controllers into retail products.
The takeaway
The transition to digital feedback loops in high-wattage power supplies signals a move toward higher reliability in compact, high-power adapters. Watch for the first commercial product announcements featuring the EPIC2A-series controllers in late 2026 to verify power-density claims in real-world retail units.
Further reading
For more on the hardware driving modern power conversion, visit Semiconductors.
Source note: This article includes information reported by EDN.
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