Method and apparatus for operating a switchmode power supply
US9722491B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 2014 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Sep 10, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/126
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus operate a switchmode power supply. The apparatus can include a pulse width modulation controller that can produce a first pulse width modulation signal at a first frequency. The apparatus can include a switchmode power supply switching element including a control terminal. The apparatus can include a harmonic filter coupled between the pulse width modulation controller and the control terminal of the switching element. The harmonic filter can provide a second pulse width modulation signal at a second frequency to the control terminal of the switching element. The second frequency can be higher than the first frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.