Switch controller, switch control method, and power supply device comprising the switch controller
US8933674B2 · kind B2 · utility
2Cited by
2References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2012 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Jul 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/217
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a switch controller, a switch control method, and a power supply including the switch controller. An exemplary embodiment of the present invention detects an on-time of a power switch of the power supply and decreases a frequency of a clock signal according to a period during which the detected on-time is shorter than or equal to the minimum on-time. According to the exemplary embodiment, switching of the power switch is controlled according to a clock signal, and the minimum on-time is an on period of the power switch that cannot be shortened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.