Dynamic switching frequency control in multiphase voltage regulators
US10324480B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2017 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Oct 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1586
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multiphase voltage regulator includes a plurality of phases and a controller. Each phase is configured to output a phase current to a load through an inductor in response to a control signal input to the phase. The controller is operable to: generate the control signals input to the phases; set a switching frequency of the control signals to a first value; and change the switching frequency from the first value to a second value different than the first value if the load current changes repetitively at a frequency that is within a predetermined range of the first value of the switching frequency. A corresponding method of operating the multiphase voltage regulator is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.