Self-balancing non-isolated high-step-down DC-DC converter
This patent describes a new circuit design for power supplies that convert high voltages down to much lower voltages efficiently—without using a transformer. The key innovation is a set of 'balancing cells' that keep voltage evenly distributed across a series of capacitors, preventing the voltage imbalance that typically causes failures or inefficiency in these converter designs. Each balancing cell moves energy in only one direction, and pairs of cells work together to balance in both directions. The controller driving these cells operates independently of the circuit's natural resonant frequency, giving designers more flexibility in how they tune performance.
What you could build
A high-efficiency non-isolated DC-DC converter module for data center server racks, telecom base stations, or EV onboard charging systems where space is tight and transformer-based designs are too bulky; buyers would be power supply manufacturers and ODMs serving hyperscale cloud operators and telecom equipment vendors.
Who in Virginia should care
Northern Virginia's hyperscale data center corridor (one of the densest in the world) creates a direct pull for efficient, compact DC power conversion IP from local university research.
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
- Keyao Sun, Rolando Burgos, Dushan Boroyevich
- Granted
- March 4, 2025
- Status
- Granted patent
- Patent number
- 12244226
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.