ESR zero estimation and auto-compensation in digitally controlled buck converters
US8115459B2 · kind B2 · utility
6Cited by
10References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2009 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Jun 24, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/157
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention is a digitally controlled DC-DC converter comprising of a power stage including at least one switch and an output capacitor. A digital controller can control the switching of the at least one switch. The digital controller can include logic to produce an indication related to a zero resulting from the equivalent series resistance (ESR) of the output capacitor and to update the control of the switching of the switch in the power stage based on the estimate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.