Controller with punctuated switching control circuit
US8379420B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 2010 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Jan 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An example controller for use in a power supply includes a zero crossing detection (ZCD) circuit and a punctuated switching control circuit. The ZCD circuit is coupled to generate a ZCD signal in response to a zero-crossing of an ac input voltage of the power supply. The punctuated switching control circuit is coupled to the ZCD circuit to generate a switching signal to control a switch to regulate an output of the power supply. The punctuated switching control circuit generates the switching signal having an interval of switching and an interval of no switching in response to the ZCD signal, where the interval of switching has a beginning that is synchronized with the zero crossing of the ac input voltage and where the interval of no switching has a beginning that is synchronized with another zero crossing of the ac input voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.