Soft-start trajectory controller for LLC resonant converters
This technology is a smarter way to start up a type of power converter called an LLC resonant converter, which is widely used in electronics to efficiently step voltage up or down. The problem with these converters is that turning them on from a cold start can send damaging electrical spikes through the circuit. This invention avoids that by watching the current in the circuit in real time and adjusting the switching speed automatically to keep current within a safe band, rather than using a fixed startup sequence. The result is a controlled, stress-free startup that balances speed and safety, and the converter then transitions seamlessly into normal operation.
What you could build
A firmware or controller IC feature for power supply manufacturers building LLC resonant converters used in data center power supplies, EV onboard chargers, and consumer electronics adapters; the primary buyers would be power supply OEMs and semiconductor companies selling controller chips.
Who in Virginia should care
Defense electronics and data center operators in Northern Virginia, as well as power electronics firms serving government contractors, would have direct interest in reliable, low-stress power conversion.
Readiness: Lab validated
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
- Weiyi Feng, Fred C. Lee
- Granted
- April 19, 2016
- Status
- Granted patent
- Patent number
- 9318946
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.