Current shaping scheme in TRIAC dimmable LED driver
US9559675B1 · kind B1 · utility
6Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2015 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Feb 24, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/385
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Aspects of the disclosure provide a circuit that includes a controller. The controller is configured to receive a signal indicative of a current flowing in a magnetic component and control a switch in connection with the magnetic component to shape a peak current of the current flowing in the magnetic component. The controller shapes the peak current from a first peak current level to a second peak current level in order to reduce an amplitude of a ripple in a current drawn from a triode for alternating current (TRIAC) during a time to satisfy a holding current requirement of the TRIAC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.