LED dimming control method and LED dimming driving device
US11889598B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2023 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Jul 31, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/37
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-emitting diode (LED) dimming driving device includes a digital-to-analog converter (DAC) control signal generating unit and an LED driving signal generating unit. The DAC control signal generating unit generates a first control signal and a second control signal. The first control signal is input to the LED driving signal generating unit to generate a first driving current I1, and the second control signal is input to the LED driving signal generating unit to generate a second driving current I2. The first driving current I1 is less than a maximum power current value Ipeak corresponding to a peak power of the LED driving signal generating unit, and the second driving current I2 is greater than the maximum power current value Ipeak corresponding to the peak power of the LED driving signal generating unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.