Current supply system, related integrated circuit, power supply system and method of operating a current supply system
US11483909B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 10, 2021 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Nov 10, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for a voltage source generates a reference signal for a voltage source, wherein the reference signal indicates a requested output voltage to be generated by the voltage source. A digital feed-forward control circuit computes a digital feed-forward regulation value indicative of a requested output voltage by determining a maximum voltage drop at strings of solid-state light sources. A digital feed-back control circuit determines a minimum voltage drop for current regulators/limiters for the strings and determines a digital feed-back correction value as a function of the minimum voltage drop. The control circuit then sets the reference signal after a start-up as a function of the digital feed-forward regulation value and corrects the reference signal as a function of the digital feed-back correction value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.