Switching voltage regulator with frequency selection
US8294445B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 2008 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Dec 4, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B15/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Techniques for mitigating interference from a switching voltage regulator by intelligently varying the switcher frequency of the switching voltage regulator are provided. In one aspect, the switcher frequency is set by adjusting a frequency setting input to a programmable clock divider. In a further aspect, a processor drives a programmable clock divider which receives a value representative of a dividing factor by which to divide a reference clock frequency signal to generate a desired switcher frequency for the switching voltage regulator. Values of the programmable clock divider are selectively varied to achieve optimal performance and mitigate the effect of switcher frequency spurious content for a given operating condition or conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.