Driver circuit and driving method with low inrush current
US10499474B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2019 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Feb 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/54
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driver circuit and a driving method with low inrush current are provided. The driving method includes steps of: supplying a charging current smaller than a high inrush current; outputting a pulse signal from a pulse generating circuit; enabling a light driving circuit to receive the charging current by the pulse signal and allowing the charging current to flow to an storage capacitor; turning on a switch component and a light-emitting assembly by the pulse signal; supplying an auxiliary current smaller than the high inrush current; enabling the light driving circuit to receive the auxiliary current and allowing auxiliary current to flow sequentially to the switch component and the light-emitting assembly; and emitting light by the light-emitting assembly with the discharging current of the storage capacitor and the auxiliary current of input power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.