Light-emitting diode driving module, method of operating thereof, and lighting apparatus including the same
US10383184B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2018 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Oct 29, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-emitting diode driving module includes an LED driving circuit to activate light-emitting diodes driven by a modified rectified voltage, and to adjust driving currents conducted to driving nodes to the light emitting diodes; a driving current controller to receive a dimming signal indicative of a degree of modulation of the rectified voltage, and to control currents conducted to the driving nodes depending on the dimming signal; and a current blocking circuit to block the currents of the driving nodes when a dimming level of the dimming signal decreases lower than a first threshold value, and unblock the currents of the driving nodes when the dimming level increases above a second threshold value higher than the first threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.