Power converters having varied switching frequencies
US7688046B2 · kind B2 · utility
11Cited by
16References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2005 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Sep 13, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and techniques for performing power conversion operations in a portable device are used to convert an input voltage to a voltage at an output. The conversion operations use a two-stage conversion to convert the input voltage to a first voltage and to convert the first voltage to a second voltage. A switching frequency is altered with changes in the input voltage. The switching frequency is selected based on the input voltage level and/or to maintain a substantially consistent ripple at the output, which can correspond to the first voltage and/or the second voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.