Switching power converter having optimal dynamic load response with ultra-low no load power consumption
US8259472B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2011 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Apr 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch controller is disclosed that adaptively controls the operating frequency of a switching power converter in order to improve one-time load response and repetitive dynamic load responses. During a transition from a high load to low load condition, the switch controller clamps the operating frequency of the switching power converter at an intermediate frequency for a period of time before allowing the operating frequency to return to a frequency associated with the low load condition. The clamped frequency is higher than the frequency associated with the low load condition thereby allowing improved response to a subsequent load change to a high load condition. Thus, the system improves dynamic load response without compromising no-load power consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.