Zero-voltage-switching multichannel LED driver with CLL
This technology is a specialized power supply circuit designed to drive multiple strings of LED lights simultaneously while keeping them all at the same brightness, even when the LEDs aren't perfectly matched. It uses a two-stage design: the first stage regulates the overall voltage, and the second stage uses a clever resonant circuit arrangement to ensure the switching transistors turn on and off at zero voltage—reducing heat and energy loss. A key innovation is that the circuit separates two jobs that normally conflict: balancing current across LED strings and enabling efficient soft-switching. By decoupling these two functions, both can be optimized independently without compromise.
What you could build
A high-efficiency multichannel LED driver IC or reference design for commercial and architectural lighting systems, sold to lighting OEMs and fixture manufacturers who need to drive multiple LED strings from a single power supply with uniform brightness and minimal thermal management overhead.
Who in Virginia should care
Virginia-based lighting manufacturers, data center operators seeking efficient LED lighting infrastructure, and defense contractors requiring high-reliability multichannel LED driver solutions for facilities or indicator 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
- Xuebing Chen, Daocheng Huang, Qiang Li, Fred C. Lee
- Granted
- January 10, 2017
- Status
- Granted patent
- Patent number
- 9544956
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.