Coaxial transistor module for high-speed switching
This patent describes a new way to physically package the transistors used in power electronics, arranging them in concentric rings rather than the flat rectangular layouts used today. By organizing switching transistors in a circular, coaxial geometry around ring-shaped metal contacts, the design dramatically reduces the parasitic inductance and resistance that normally limit how fast and efficiently power converters can switch. Multiple packages can be nested inside one another or stacked to build more complex circuit configurations like H-bridges. The result is a compact, low-loss building block for the high-frequency power electronics used in inverters, motor drives, and charging systems.
What you could build
A drop-in coaxial transistor module for high-frequency power converters used in EV inverters, industrial motor drives, and fast-charging infrastructure; the primary buyers would be power electronics module manufacturers and Tier 1 automotive suppliers.
Who in Virginia should care
Defense primes and government contractors in Northern Virginia and the Hampton Roads corridor that design compact power electronics for naval and aerospace platforms would be natural partners or licensees.
Readiness: Concept
Concept — described but not yet demonstrated. Lab validated — supported by experimental results in the patent. Prototype likely — the text describes a built, working embodiment.
Readiness is inferred from the patent text, not from a lab visit.
The record
- Inventors
- Mark Cairnie, Jack Knoll, Christina DiMarino
- Filed
- Patent pending — filed June 23, 2025
- Status
- Application
- Publication number
- US20250391742A1
Ready to talk?
Virginia Tech Intellectual Properties handles licensing for this technology.
Prosim summaries are generated from public patent text and are not legal advice.