Coupled inductor module for interleaved multiphase DC-DC
This technology is a specialized magnetic component design for DC-DC power converters that run multiple parallel power-conversion stages simultaneously. When you run multiple stages in parallel and stagger their switching timing (interleaving), you get unwanted circulating currents that can damage components or require bulky inductors to suppress. This invention uses a set of inversely coupled inductors — wound so their magnetic fields cancel each other for circulating currents but not for the main power flow — to suppress those currents without adding size or reducing efficiency. The result is a compact, integrated magnetic element that keeps ripple current low while allowing high-power, multi-phase operation.
What you could build
A compact magnetic component (coupled inductor module) embedded in high-power DC-DC converters used in data center power supplies, EV onboard chargers, or industrial power systems; buyers would be power electronics OEMs and tier-one automotive suppliers designing high-density converters.
Who in Virginia should care
Northern Virginia data center operators and their power infrastructure suppliers, plus defense electronics contractors in the Hampton Roads and Northern Virginia corridors working on high-density power systems.
Readiness: Prototype likely
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
- Mingkai Mu, Sizhao Lu, Yang Jiao, Fred C. Lee
- Granted
- August 27, 2019
- Status
- Granted patent
- Patent number
- 10396684
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.