Single-regulator multi-channel constant-current LED driver
This technology is a circuit that drives multiple strings of LEDs (or other loads) from a single power supply while keeping the current through each string essentially equal — without needing a separate controller for every string. It achieves this by wiring transformer primary coils in series so that the same current naturally flows through all of them, and only one string needs to be actively monitored to regulate the whole system. An optional trick of magnetically coupling the inductors further tightens the balance between channels. The result is a simpler, more efficient driver with fewer components than conventional multi-channel LED drivers.
What you could build
A compact, low-component-count LED driver IC or module for commercial and industrial lighting systems; target buyers are lighting OEMs and ballast manufacturers seeking cost reduction and BOM simplification in multi-string LED luminaires.
Who in Virginia should care
Virginia-based lighting manufacturers, data center lighting system integrators, or defense contractors supplying LED-based vehicle or facility lighting could find cost-reduction value here.
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
- Shu Ji, Haoran Wu, Fred C. Lee
- Granted
- December 3, 2013
- Status
- Granted patent
- Patent number
- 8598807
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.